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Journal articles on the topic 'Building heating system'
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1
Fomin, Valery V. "Feed-forward control of a building’s heating system." MATEC Web of Conferences 226 (2018): 04014. http://dx.doi.org/10.1051/matecconf/201822604014.
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In the heating of buildings during positive dynamics of weather conditions a problem is encountered of air temperature rise in the rooms of the building. Solution of the problem given the buildings are equipped with heating system controllers is a practical task using update algorithms in the operation of controllers. The proposed method offers an option of a heating system control algorithm to attain stable temperatures in the rooms of the building.
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KOSENKO, L. V., O. O. KOVAL, Y. L. YURCHENKO, and O. A. TYMOSHENKO. "ENERGY EFFICIENCY OF THE HEATING SYSTEM OF THE PSACEA HIGH-RISE BUILDING." Ukrainian Journal of Civil Engineering and Architecture, no. 6 (January 14, 2023): 66–72. http://dx.doi.org/10.30838/j.bpsacea.2312.271222.66.912.
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The research aims to deepen the methodological and organisational-practical principles of energy efficiency for further application in the educational buildings thermal modernization.
 The relevance of the work is to reduce energy consumption by increasing the energy efficiency of buildings. Based on the calculations and research, the following scientific and practical results were obtained:
 - a technical inspection of the educational building heating system was conducted;
 - a thermal imaging survey was conducted and infiltration thermal failures of the building's heating system were detected;
 - the energy efficiency class of the building before thermal renovation is determined;
 - economic expediency of the heating system thermal modernization was proposed and calculated.
 - the energy efficiency class of the building after thermal renovation is determined.
 As an outcome of obtaining scientific and practical results for the heating system thermal failures, indicating the need to introduce measures to reduce the amount of thermal energy losses, ways for the heating system thermal modernization are proposed.
 The obtained scientific and practical implications of the research work can be used in the future on similar objects, as an example for increasing the energy efficiency level.
3
Zhang, Qian. "Analysis and use of building heating and thermal energy management system." Thermal Science 24, no. 5 Part B (2020): 3289–98. http://dx.doi.org/10.2298/tsci191130120z.
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To explore the role and influence of thermal energy management system on building heating, by building a thermal energy management system based on the Internet of Things, the situation of heating system and building heating is analyzed, the heat utilization rate of building heating, the stability of heating temperature, the change of heating energy consumption are mainly studied, and the energy consumption of building and the comprehensive effect of thermal energy management system and residents? satisfaction are analyzed. The research results show that through the role of the Internet of Things thermal energy management system, the heat utilization rate of heating buildings has increased from about 65% to about 80%, about 15%. The fluctuation of heating water temperature is reduced from 12?C before the system is adopted to 4 ?C, which improves significantly. The coal consumption per hour of heating system is reduced from 63 kg/h to 50 kg/h, and the coal saving is about 15%. This not only saves resources but also reduces environmental pollution. The heat management system based on the Internet of Things has significantly improved the heating system and building heating. Through the application of thermal energy management system, not only the heat utilization rate is increased, but also the consumption of resources is reduced and the environment is protected. Meanwhile, it solves the problem of building heating and the maximization of efficiency in the operation of heating companies. The research on building heating and thermal energy management system has a positive effect on the follow-up research.
4
Ochs, Fabian, Mara Magni, and Georgios Dermentzis. "Integration of Heat Pumps in Buildings and District Heating Systems—Evaluation on a Building and Energy System Level." Energies 15, no. 11 (2022): 3889. http://dx.doi.org/10.3390/en15113889.
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The use of heat pumps in buildings is one of the best and often the only option for the decarbonization of the building stock. District heating seems a promising solution in urban areas and in existing buildings when the use of heat pumps is restricted and also technically and economically challenging (source exploitation, space restrictions, sound emissions, etc.). Heat pumps can be integrated in various ways in buildings and district heating systems: large central high-temperature heat pumps in district heating, medium-size heat pumps block- or building-wise or small heat pumps decentral apartment-wise. The best option depends on the individual district heating CO2 emissions and the electricity mix as well as on the perspective of the building owner versus that one of the district heating system and its future development. Austrian examples of district heating systems and different variants of integrating heat pumps are investigated in a comprehensive way by means of an energetic and environmental simulation-based analysis. This assessment includes a detailed investigation of the capabilities of the booster heat pump to increase the PV own-consumption and is also expanded to include various scenarios for the development of the electricity mix and the decarbonisation of district heating.
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Zhu, Ka’er, Ruochong Zhou, Ping Gao, Jie Wang, and Fei Luo. "Analysis of Time-Sharing and Zoning Heat Load Demand and Research on Heating Control of Large Heating Buildings." International Journal of Heat and Technology 40, no. 5 (2022): 1196–202. http://dx.doi.org/10.18280/ijht.400510.
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It is of practical significance to analyze the time-sharing and zoning heat load demand and fine heating control of large heating buildings in order to reduce the building energy consumption. The existing research lacks the time-sharing and zoning form of refined heating for different functional zones of large heating buildings. For this reason, this paper carried out the time-sharing and zoning heat load demand analysis and research on heating control of large heating buildings. First, the mathematical model for the main heating links of the heating system of the large building based on the heat balance equation is constructed to realize the simulation of the dynamic change of the performance of the large building heating system. Then, the size, characteristics and influencing factors of heat load of various heating units in the building are analyzed, and three possible ways of mass regulation, mass-flow regulation and intermittent regulation that can change the flow by stages are introduced. The experimental results verify the effectiveness of the proposed heating control mode, which can effectively reduce the building heating energy consumption.
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Zivkovic, Branislav, Maja Todorovic, and Petar Vasiljevic. "Energy savings for residential heating in two pairs of buildings achieved by implementation of actually consumed energy measuring." Thermal Science 10, no. 4 (2006): 79–88. http://dx.doi.org/10.2298/tsci0604079z.
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The paper presents results of heating energy consumption measurements in two pairs of buildings in community New Belgrade for two heating seasons. Influence of these measurements on energy savings is also presented. The measurements were carried out during heating seasons 2002/03 and 2003/04 in buildings in Block 34 and 63, connected to the district heating system "Beogradske elektrane". The buildings in each pair have similar architectural and thermal characteristics. One of the buildings in a pair was "test" building and the other "control" one. In the "test" building the energy consumption for heating of each apartment was measured, as well as total energy consumption for the whole building in the substation. Occupants were able to regulate the heating system. In the "control" building the energy consumption was measured only for the whole building, and occupants had almost no impact on heating energy consumption. The comparison of energy consumption for heating in the "test" and "control" buildings is given in the paper, as well as analysis of the influence of energy consumption measurements on the achieved energy savings. .
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Jie, Peng Fei, De Ying Li, and Neng Zhu. "Optimization of Building Envelope and Heating System in Heating Areas in Northern China." Advanced Materials Research 255-260 (May 2011): 1344–47. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.1344.
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Building energy consumption (BEC) accounts for a large proportion in the whole energy consumption, and heating energy consumption (HEC) in the proportion of BEC is the largest in heating areas in northern China. How to take effective measures to reduce heating energy consumption has become an urgent problem needs to be solved in the building energy conservation work. Existing buildings and heating system in heating areas in northern China was studied, which helped to give the heating model on the heating energy consumption. Based on the heating model, related factors influencing the heating energy consumption were studied. And effective measures used to reduce HEC were proposed, which provided a reference and basis for the optimal design and operation of building envelope and heating system in heating areas in northern China.
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Wang, Chun Qing, Chun Jing Lai, and Yan Peng Zhu. "Solar Water Heating System and Building Integration of High-Rise Building in Seismic Zone." Advanced Materials Research 512-515 (May 2012): 163–67. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.163.
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Solar water heater has been heavily used in building, but in high-rise building the application of solar water heating system has many difficulties. In seismic zone, solar energy system has strict design requirements as non-structural elements of the building. These restrictions seriously hinder the application of solar energy system in high-rise buildings. Considering the limitations of the use of solar energy in seismic-zone high-rise building, some measures are taken by architectural building integration, structural measures integration, piping layout integration and by optimizing parameters of the solar water heating system. These measures could solve some technical difficulties of solar water heating system in high-rise building in seismic zone.
9
Liao, Zhinong. "Analysis and application of building heating and thermal energy management system." Thermal Science 24, no. 5 Part B (2020): 3337–45. http://dx.doi.org/10.2298/tsci191212125l.
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Objective: Through the analysis and application of building heating and thermal energy management system, this paper proposes a new thermal energy control strategy to improve the automation level of building heating optimization. Method: This study analyzes the principle of indoor heat balance in buildings. Aiming at the different heating needs of different buildings, a new control strategy is proposed by combining neural network models and fuzzy control theory. Finally, this strategy is applied to the actual building heating, and the practical application value of the strategy proposed by this study is verified through experiments. Result: In the heating stage, after applying the control strategy, the maximum relative error of the temperature is 0.047, and the average error is 0.013. In the antifreeze stage, the maximum error is 0.143 and the average error is 0.09. After the implementation of the control strategy, the temperature fluctuations in the room change little and remain almost between 19 ?C and 21 ?C. Buildings consume less heat with the highest energy saving rate of 14.37% and the average energy saving rate of 9.23%. Conclusion: The control strategy proposed in this study can adjust the indoor temperature according to the actual situation and achieve the purpose of reasonable heat use. Moreover, it has certain energy-saving effects and can be applied to building heating.
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Pupeikis, Darius, Arūnas Burlingis, and Vytautas Stankevičius. "REQUIRED ADDITIONAL HEATING POWER OF BUILDING DURING INTERMITTED HEATING." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 16, no. 1 (2010): 141–48. http://dx.doi.org/10.3846/jcem.2010.13.
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By introduction of intermittent heating of building we can reduce the thermal energy consumption for heating. But it requires the additional power of heating system. It is determined that the most effective solution for energy savings is to enlarge the heating power approximately by 50% for most of buildings. The simulation has showed that for buildings with a medium thermal inertia (time constant τ = 144 h) the expenses by employing the intermittent heating (reduced temperature period: 12 h on working days and 48 h at weekends), pays back after one year. By designing the heating system we must pay attention to thermal inertia of building. Our research showed that for various thermal inertias of building, the adequate modes of intermittent heating must be chosen. Santrauka Šildant pastata, esant papildomai šiluminei galiai, galima sumažinti sunaudojamos šilumines energijos. Nustatyta, kad papildomos šilumines galios (+50 %) sanaudos, siekiant pagreitinti temperatūros padidinima vidutinio masyvumo (τ = 144 h) pastatu patalpose ir taikant protarpini šildyma (12 h darbo dienomis ir 48 h savaitgaliais), atsiperka po vieneriu metu. Projektuojant reikia atsižvelgti i pastato paskirti, masyvuma ir šildymo sistemos galia, siekiant sutaupyti šilumines energijos bei gauti ekonomine nauda, taikant protarpini šildyma. Tyrimai parode, kad ivairaus masyvumo pastatams turi būti taikomi atitinkami protarpinio šildymo periodai.
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Gaitan, Nicoleta Cristina, Ioan Ungurean, Costica Roman, and Catalin Francu. "An Optimizing Heat Consumption System Based on BMS." Applied Sciences 12, no. 7 (2022): 3271. http://dx.doi.org/10.3390/app12073271.
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The recent trend is to transform existing buildings into smart, green, or passive buildings by adopting sustainable technologies to achieve increased life comfort and production efficiency through reducing carbon emissions, energy consumption, and operating costs. Thus, existing buildings can be rehabilitated in order to have the lowest possible energy consumption. One of the highest demands on the energy consumption of buildings is the heating system used during the winter months. In this paper, we propose a management and control system for electrical and energy heating consumption, based on a BMS (building management system) that is used for the rehabilitation of the students’ dormitories on a university campus. This includes a cogeneration plant that can be controlled in order to produce electrical and heating energy, depending on the requirements needed to heat the building in the cold season. The system reduced the consumption of energy for heating by 13% and of electricity by 32%.
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Šiupšinskas, Giedrius, Juozas Bielskus, and Artur Rogoža. "INFLUENCE OF APARTMENTS’ MODERNIZATION ON THE TEMPERATURES OF HEATING SYSTEM IN THE BUILDING." Mokslas - Lietuvos ateitis 13 (November 22, 2021): 1–6. http://dx.doi.org/10.3846/mla.2021.15275.
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When modernizing apartment buildings, heating appliances are replaced or old ones are left, high thermal temperatures are usually maintained, thus limiting the increase in the DH system’s efficiency. In the article, in order to evaluate the impact of the reduced thermal temperature of the building on space heating when the radiator area remains constant, 3 alternatives have been analyzed. They include cases when after the building modernization old heating appliances are left, but the temperature of the heat carrier is reduced up to 60/40/20 °C in one case or even up to 45/25/20 in another alternative. There has also been examined the possibility of reducing the heat carrier temperature of the heating system without modernization of the building. An hourly data analysis of the heating system model for two typical months of the heating season has been performed. The analysis shows that after the modernization of the building, when heating device areas are left the same, the existing heating temperature can be reduced to 60/40/2020 °C.
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Mičko, Pavol, Andrej Kapjor, Dávid Hečko, and Marián Pafčuga. "Thermal Comfort Measurement for Wet Floor Cooling System." Advances in Thermal Processes and Energy Transformation 2, no. 3 (2019): 48–51. http://dx.doi.org/10.54570/atpet2019/02/03/0048.
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The trend of constant increase in energy prices can be observed especially on the increased demands on the thermal insulation properties of building structures of buildings. According to European Directive 2010/31 / EU, since 2019 only buildings that meet the energy standards of near zero buildings have to be designed. In practice, the design of the building takes into account, in particular, the shape of the building, its cladding, but also the method and technology for heating, cooling and hot water production. In the case of a family house is considered a specific annual consumption of heat for heating up to 20 kW.h.m-2 floor area. A popular way to achieve low heat consumption is to select an efficient heat source - a heat pump. It is best to combine a heat pump with a heating system with a low temperature gradient. The combination of heat pump and radiant floor heating is very popular. Modern heat pumps also come with the possibility of reversible operation and serve as a source of cold. The following article will therefore address floor radiant cooling and its effect on thermal comfort.
14
Liu, Ze Qin, Zhen Jun Zuo, and Lin Li. "Simulation on Building Energy Consumption for a Residential Building." Applied Mechanics and Materials 492 (January 2014): 143–46. http://dx.doi.org/10.4028/www.scientific.net/amm.492.143.
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A two floor residential building in Tianjin as the research object was studied in this paper. The software eQUEST was carried out to simulate residential buildings energy consumption, and to explore the annual total energy consumption of the residential building, which was influenced by air conditioning heating modes and the building orientations. The air conditioning and heating system modes used to simulate including the heat pump air conditioning, air conditioner & heat sink and radiant heating & heat sink. The simulated building orientations include east, west, south and north. The transformation of the sunshade direction could be obtained by changing the building orientation. The indoor design temperature in summer was set at 26°C, while winter design temperature was set at 18°C. As the result of the energy consumption simulation study showed that, the annual total energy consumption achieved the minimum when heat pump type air conditioning heating system was adopted. When the effected factors such as air conditioning heating system, indoor heat source condition, window size and some other factors which influenced energy consumption were constant, the simulation results might be found that the building orientation had a small influence on the building energy consumption.
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KHUJAEV, PARVIZ S. "PASSIVE HEATING SYSTEM OF A RESIDENTIAL BUILDING." Architecture, Construction, Transport, no. 4(102) (2022): 53–59. http://dx.doi.org/10.31660/2782-232x-2022-4-53-59.
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In this article, we will talk about the passive heating system applied to residential buildings in rural areas. The air heating system is used as a heating surface in buildings with multi-channel structures in the fencing structures (external wall, floor and roof). In these cases, the author considers the issues of the first and second conditions of temperature comfort, taking into account the temperature of the heating surface.
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Shen, Xu. "Energy saving system for building cooling and heating integration based on building information modelling technology." Thermal Science 28, no. 2 Part B (2024): 1413–21. http://dx.doi.org/10.2298/tsci2402413s.
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In order to understand the energy-saving system of building cooling and heating integration, the author proposes a research on an energy-saving system of building cooling and heating integration based on building information modelling (BIM) technology. The author first analyzed the energy-saving performance of the system by establishing models for each module based on meteorological data simulated on the DeST software platform. Secondly, in order to analyze the energy consumption of the integrated system, it is necessary to establish a residential building model, and select the building model in the cold winter and hot summer areas of a city for analysis. The results show that due to the system?s heat storage function, there is no need to consume electricity in spring and autumn. Compared to the electric heating hot water mode, the integrated system can save 1198.85 kWh of electricity in non-cooling and heating seasons, with a 100% energy-saving rate. Compared to not using an integrated system, it can achieve an energy-saving rate of 81.9% throughout the entire refrigeration and heating season, with significant energy-saving effects. The integrated heating, cooling and hot water system of BIM technology adopts the technology of cool storage and heat storage coupled with solar energy and heat pump technology. The system has simple structure, obvious energy-saving effect, good environmental protection, and can adapt to various climates throughout the year. The introduction of underfloor heating also increases the comfort of buildings and residences.
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Swhli, Khaled Mohamed Himair, Srdjan Jovic, Nebojša Arsic, and Petar Spalevic. "Detection and evaluation of heating load of building by machine learning." Sensor Review 38, no. 1 (2018): 99–101. http://dx.doi.org/10.1108/sr-07-2017-0139.
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Purpose This paper aims to explore detection of heating load of building by machine learning. Detection of heating load of building is very important in design of buildings due to efficient energy consumption. Design/methodology/approach In this study, detection of heating load of building based on effects of dry-bulb temperature, dew-point temperature, radiation, diffuse radiation and wind speed was analyzed. Machine learning approach was implemented for such a purpose. Findings The obtained results could be useful for future planning of heating load of buildings. Because the heating load of building is a very nonlinear phenomenon, it is suitable to use machine learning approach to avoid the nonlinearity of the system. Originality/value The obtained results could be used effectively in detection of heating load of buildings.
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Han, Wenyang, Meng Han, Menglong Zhang, Ying Zhao, Kai Xie, and Yin Zhang. "Historic Building Renovation with Solar System towards Zero-Energy Consumption: Feasibility Analysis and Case Optimization Practice in China." Sustainability 16, no. 3 (2024): 1298. http://dx.doi.org/10.3390/su16031298.
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This paper aims to study the required solar panel tilt angle, area, and investment payback period for achieving zero-energy heating in historically significant courtyard-style residential buildings. The retrofitting approach involves positioning solar panels on the main building of the structure using four supports, each located at the corners, elevated from the ground and not in direct contact with the building. This approach does not alter the external envelope structure of the building, thereby preserving the authenticity of the cultural heritage. Using BESI software, we simulated the heating energy demand of the sample building. We integrated a solar heating system within the building and analyzed the optimal solar panel layout area, installation angle, and payback period for achieving zero-energy heating. This allowed the building to meet the zero-energy heating requirements. Taking the Hu Family Courtyard heritage conservation building as an example, we proposed the optimal layout plan for solar energy retrofitting.
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Sanytsky, Myroslav, Robert Sekret, and Mariusz Wojcikiewicz. "Energetic and Ecological Analysis of Energy Saving and Passive Houses." Selected Scientific Papers - Journal of Civil Engineering 7, no. 1 (2012): 71–78. http://dx.doi.org/10.2478/v10299-012-0020-3.
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Abstract In this paper results of influence of building-installation system parameters on value of energetic coefficients were calculated. Three types of buildings (standard, energy saving and low energy) with heating surface of 100, 150 i 200 m2 were used. The above types of buildings differ on thermal barrier and heating system efficiency. The influence of the gravity and mechanical ventilation systems on the final heat energy of different kinds of houses was shown. Parameters of the certificate for energy characteristics of building were used. Mathematics models of influence of thermal barrier parameters and heating surface on the value of energy characteristics, namely final energy EF, primary energy EP and useful energy EU were established. Influence of such parameters as heating energy factors, ventilation system and energy sources on the energy efficiency improvement of buildings was analyzed. The building environmental assessment system was proposed on the base of energetic and ecological analysis of houses.
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Zhao, Juan, Yifei Bai, Junmei Gao, Tianwei Qiang, and Pei Liang. "Smart Evaluation Index of Roof SHS Suitability." Energies 15, no. 3 (2022): 1164. http://dx.doi.org/10.3390/en15031164.
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The instability of solar energy and its resource distribution characteristics make it difficult to judge its suitability in practical engineering applications, which hinders its promotion and application. In order to better promote the effective use of solar energy and promote the solar heating system, it is necessary to put forward a simple method of judging the suitability of the solar heating system for engineering application. This study puts forward “F, Q” as the basis for judging the suitability of solar heating systems built on the roof. Two types of public buildings, office buildings and three-star hotels, are taken as the research objects. DeST software is used to change the heating area of the building by superimposing floors to simulate the heat load of the building when the heating area changes. A dynamic simulation coupling model of solar heating system is established in the TRNSYS software to analyze the operating status of the system under all working conditions. The functional relationship between “F, Q” and solar energy guarantee rate is established, and the solar energy contribution rate is divided into three regions of F < 30%, 30% ≤ F ≤ 50%, and F > 50%. The evaluation standard of the building suitability of the solar energy heating system is established according to the scope of “F, Q” in different regions (An office building for, e.g., if the contribution rate of solar heating system is required to be greater than 50%, the “F” of these four areas should be greater than 0.11388, 0.15543, 0.10572, and 0.04511.), and the effectiveness of “F” is verified through actual cases verified by other scholars in the research. The method proposed in this paper is helpful to judge the suitability of solar heating systems in different regions and different types of conventional buildings, so as to better promote solar heating systems.
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Balasanian, G., O. Klymchuk, A. Semenii, Ye Babaiev, and L. Sachenko. "SIMULATION OF INTERMITTENT HEATING MODE OF THE EDUCATIONAL BUILDING." Odes’kyi Politechnichnyi Universytet Pratsi 2, no. 64 (2021): 22–27. http://dx.doi.org/10.15276/opu.2.64.2021.03.
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. The algorithm of operation of the heat supply system in the mode of intermittent heating which considers features of operation of the building is offered. The purpose of the work is to assess the effectiveness of the use of intermittent heating for the educational building of the thermal laboratory of the Odessa Polytechnic State University. Currently, a project is being implemented to disconnect heat supply from the University boiler room and transfer the building of the University's heating laboratory to autonomous heat supply based on a condensing wall-mounted gas boiler. The combined heating system with the use of different heating devices (radiators, fan coils, climate panel, “underfloor heating” system) allows to study the dynamics of heating the laboratory premises with different thermal insulation and shielding of external and internal walls. The factors of reduction of energy consumption in the mode of program heat supply are analyzed in the work. Modeling of modes of operation of the heat generator of the heat supply system operating in the mode of intermittent heating is executed. The mathematical model of dynamics of heating of air in rooms taking into account features of operating modes and various types of heating devices as a part of system of heat supply is offered. For different climatic conditions the mathematical modeling of operating modes of the heating system is carried out and indicators of efficiency of work of system are received. The potential of energy saving for administrative, educational, office buildings depending on the heat-accumulating properties of external and internal wall structures has been studied. The expediency of using the Pontryagin maximum principle to increase the efficiency of morning flooding of buildings with different ones has been confirmed. accumulation time constants.
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We, Chenghui, and Hao Chen. "Thermal energy control in building energy heating system based on building information modelling." Thermal Science 25, no. 4 Part B (2021): 2941–48. http://dx.doi.org/10.2298/tsci2104941w.
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This article introduces the principle of the glass curtain wall heating and cooling cycle constant temperature control test system in the building energy heating system and studies the constant temperature control strategy of its core cooling and heating circulation system. The author designed an adaptive fuzzy control algorithm with a self-learning function realize the thermal energy constant temperature control of the cooling and heating cycle experimental system and conducted the first model test. The test results show that the thermal energy constant temperature control strategy of the circulatory system and its adaptive fuzzy control algorithm have good control characteristics and effects. During the test, the thermal energy constant temperature control accuracy is within 0.4?C when the system is dynamically heated and cooled, and the temperature fluctuates when the constant temperature is maintained. Within 0.2?C, the test system fully meets the requirements of the American building energy heating AAMA501.5.98 glass curtain wall cycle test standard.
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Noro, Marco, Simone Mancin, Filippo Busato, and Francesco Cerboni. "Innovative Hybrid Condensing Radiant System for Industrial Heating: An Energy and Economic Analysis." Sustainability 15, no. 4 (2023): 3037. http://dx.doi.org/10.3390/su15043037.
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In this paper, an innovative hybrid condensing radiant tubes heating system for an industrial building is modelled in three climatic zones of Italy using dynamic simulation software. Radiant tubes are coupled with an air–water heat pump, the latter serving an air heating system with terminals located in the building. The energy performance of the hybrid heating system is optimized by evaluating the best nominal power of the heat pump, the cut-off temperature in a bivalent parallel operation, the bivalent temperature in a bivalent alternative operation, and the peak power of the photovoltaic system on the roof of the building. Energy savings between 40% and 80% are calculated with respect to traditional heating systems, considering the different configurations of the system and the climates. An economic analysis also allows the evaluation of the economic advantages of this hybrid heating system for industrial buildings.
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Vadiee, Amir, Ambrose Dodoo, and Elaheh Jalilzadehazhari. "Heat Supply Comparison in a Single-Family House with Radiator and Floor Heating Systems." Buildings 10, no. 1 (2019): 5. http://dx.doi.org/10.3390/buildings10010005.
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Floor heating and radiators are two of the most common types of hydronic heating systems used for space heating in single-family houses in cold climate regions. Notwithstanding, there are few comparative studies on indoor temperature distribution and system cost evaluations for radiators and floor heating. Furthermore, there are no aligned outcomes in terms of total heat supply for a single-family house with radiators or floor heating. In this study, the effect of building energy efficiency level and construction type, including flooring material, on the supply heating demand and transmission heat losses were studied for both radiator and floor heating systems. For this purpose, a single-family house located in Växjö, Sweden, was modeled as a case study. The heating demand was supplied with a district heating system with a similar supply temperature at 45 °C for both the radiator and floor heating system. A sensitivity analysis was also performed to assess the effect of flooring configurations on the annual supply heating demand for both conventional and passive versions of the case-study building. The results showed that the radiator-integrated building had a lower supply heating demand in comparison with the floor heating-integrated buildings. Based on the sensitivity studies, the flooring material did not have a significant influence on the supply heating demand and on the transmission heat losses in the case of the radiators. The supply heating demand was only reduced up to 3% if the flooring U-value was improved by 60%. The results also showed that refurbishment in a standard conventional building with a radiator heating system based on the passive criteria led to a 58% annual energy savings, while this amount for a building with a floor heating system was approximately 49%.
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Liu, Yongchun, Qingrong Liu, Qingqing Liang, et al. "Comparison of the energy flexibility potential of different heating ends in residential buildings." Journal of Physics: Conference Series 2993, no. 1 (2025): 012012. https://doi.org/10.1088/1742-6596/2993/1/012012.
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Abstract Demand response is now recognized as an effective approach to tackle the issue of grid instability, with heating systems in buildings serving as a vital flexible resource on the demand side. Split air conditioning and floor heating systems are the two most common forms of heating in southern China. This study quantitatively compares the energy flexibility of residential buildings using different heating systems by employing a variety of control strategies. The results reveal that the floor heating system can significantly reduce the subsequent load within 3 hours after preheating is halted, whereas the air conditioning system achieves similar reductions only within 1 hour, while maintaining comparable indoor thermal comfort. Extending the preheating duration, increasing the preheating temperature, and improving building insulation performance can boost system flexibility. Especially for the underfloor heating system, high-insulation buildings show an improvement in the average load reduction rate ( γ _ L ) by 0.44%-67.12% compared to low-insulation buildings. Furthermore, incorporating outdoor environmental factors into demand response control enhances building energy flexibility.
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Ingeli, Rastislav, and Peter Buday. "Analysis of Smart Zone Heating in Different Heating Systems." Periodica Polytechnica Mechanical Engineering 65, no. 4 (2021): 302–9. http://dx.doi.org/10.3311/ppme.17437.
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The basic concept in the design of buildings with zero energy consumption is, in addition to high-quality thermal properties of the building envelope, also a correct and efficient system of heating and hot water preparation in residential buildings. One of the basic concepts when designing heating systems is a zone heating system. It is a system that brings effective regulation according to heating zones. In practice, the question sometimes arises as to whether zone regulation of individual rooms in small family houses is necessary. That is whether in such buildings, zone heating is not an unnecessary investment cost. In this paper, we analyze the effect of zone heating in two types of heat transfer systems on the internal operating temperature in the individual analyzed zones, which are interconnected by an internal partition structure. It is a verification that even in smaller spaces, zone heating has a significant potential for energy savings.
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Zhang, Sirui, Hao Li, Qing Zhang, Haidong Zhang, Limin Jiang, and Bingqing Guo. "Electric supplementary heating technology of municipal heating for city heat exchange station." E3S Web of Conferences 338 (2022): 01002. http://dx.doi.org/10.1051/e3sconf/202233801002.
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Municipal heating in northern areas generally suffers from heat sources, heat grid gaps, and high dependence on fossil fuels. It is difficult to guarantee the heating effect of incremental buildings at the end of the building, and relying on traditional capacity expansion methods has caused a waste of social resources to a certain extent. A “no capacity increase” municipal heating electric supplementary heating technology for urban heat exchange stations is proposed. First, the design concept of the electric supplementary heating system is explained. Then, the investment calculation model of the electric supplementary heating system is established. Finally, an office building in Shijingshan, Beijing is used as a research example to perform simulation calculations.
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Rasku, Topi, Toni Lastusilta, Ala Hasan, Rakesh Ramesh, and Juha Kiviluoma. "Economic Model-Predictive Control of Building Heating Systems Using Backbone Energy System Modelling Framework." Buildings 13, no. 12 (2023): 3089. http://dx.doi.org/10.3390/buildings13123089.
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Accessing the demand-side management potential of the residential heating sector requires sophisticated control capable of predicting buildings’ response to changes in heating and cooling power, e.g., model-predictive control. However, while studies exploring its impacts both for individual buildings as well as energy markets exist, building-level control in large-scale energy system models has not been properly examined. In this work, we demonstrate the feasibility of the open-source energy system modelling framework Backbone for simplified model-predictive control of buildings, helping address the above-mentioned research gap. Hourly rolling horizon optimisations were performed to minimise the costs of flexible heating and cooling electricity consumption for a modern Finnish detached house and an apartment block with ground-to-water heat pump systems for the years 2015–2022. Compared to a baseline using a constant electricity price signal, optimisation with hourly spot electricity market prices resulted in 3.1–17.5% yearly cost savings depending on the simulated year, agreeing with comparable literature. Furthermore, the length of the optimisation horizon was not found to have a significant impact on the results beyond 36 h. Overall, the simplified model-predictive control was observed to behave rationally, lending credence to the integration of simplified building models within large-scale energy system modelling frameworks.
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Shapoval, Stepan, Mariana Kasynets, Bogdan Gulai, and Yurii Pryshliak. "BUILDING HEAT SUPPLY SYSTEM BASED ON HYBRID SOLAR COLLECTORS." Theory and Building Practice 2023, no. 2 (2023): 55–60. http://dx.doi.org/10.23939/jtbp2023.02.055.
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Increasing the efficiency of solar heat supply systems is one of the important problems of solar energy. The research presented in this article is aimed at improving the efficiency of hybrid solar collectors without a transparent coating for building heating systems. One of the key challenges in the field of solar energy is the development of new technologies to ensure high collection of solar energy and to integrate it into traditional heating and hot water systems. The study shows that hybrid solar collectors with the placement of heat carrier circulation circuit tubes above the heat absorber can increase the thermal efficiency factor with a certain change in the angle of inclination and the density of solar radiation. A nomogram was also developed that determines the dependence of this coefficient on the angles of arrival of solar radiation and its density.
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Sit, M.L., A.A. Juravliov, D.M. Suvorov, and V.M. Sushchikh. "Combined District Heating System CHP- Local HP." Problemele Energeticii Regionale 1(45) (January 15, 2020): 81–93. https://doi.org/10.5281/zenodo.3713430.
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The work relates to the problems of using heat pumps in district heating systems. The aim of the study is to increase the energy economic efficiency of combined heat supply systems with heat pumps using natural refrigerants. This goal is achieved by developing a scheme of the system in which part of the building is heated centrally from the CHP, and the other part is from a heat pump installed in the building, and heat pump which receives low potential heat from the return network water leaving the part of the building, - centralized, and from outside air. The most significant results of the work are the developed scheme of a carbon dioxide heat pump, which combines both the possibilities of working in a quantitative heat supply system and when preparing hot water for buildings in a non-heating period. The significance of the obtained results lies in the fact that the proposed technical solution allows to reduce significantly fuel consumption for thermal power plants and the costs of consumers when they pay for consumed energy. Heat pump circuits have also been established for the quantitative law of regulating the operation mode of the heat supply system. With the proposed scheme of operation, the heat pump for domestic hot water works only in the non-heating period, and domestic hot water is provided during the heating period from the CHP.
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Rodrigues, André, Ana I. Palmero-Marrero, João Soares, Szabolcs Varga, and Armando C. Oliveira. "Experimental Analysis of a Polygeneration System: Assessment of the Thermal Sub-System." Energies 17, no. 7 (2024): 1606. http://dx.doi.org/10.3390/en17071606.
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In this paper, the experimental results of the thermal sub-system of a reliable and cost-effective polygeneration solar system are presented. This polygeneration system produces heating, cooling, and electricity from solar energy, which is used in an existing test building. Heat is generated in four evacuated tube solar collectors (ETCs). The heat may be used for space cooling through a variable geometry ejector (VGE) heat pump. In order to reduce the mismatches between generation and consumption, two thermal storage tanks were added. The performance of a new thermal storage, with 400 L, able to store both sensible and latent heat, was tested. The heating performances of the test building were assessed. Ejector cycle tests were also performed, and the variation of the cooling coefficient of performance (COP) was calculated for different flow rates. For heating, the results showed that the heat storage was capable of heating the test building for 8 h, with temperatures between 22 °C and 26 °C. All results showed that this polygeneration prototype could be capable of meeting the heating and cooling needs when applied to a real building.
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Shim, Jisoo, and Doo-sam Song. "Analysis of heating behaviour based on occupancy patterns in residential building with radiant floor heating system." E3S Web of Conferences 396 (2023): 03027. http://dx.doi.org/10.1051/e3sconf/202339603027.
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To achieve a carbon-neutrality, a reduction of heating energy consumption in residential building should be achieved. Although, lots of building energy policies were implemented to reduce heating energy consumption, it still accounts the largest share of global building energy consumption. Large number of researches pointed out the poor heating energy management by occupant makes inefficient heating energy consumption. In this research, the occupancy patterns and heating behaviour in Korean residential building are analysed. The occupancy patterns are identified with electricity consumption collected from 229 households. By comparing the heating energy consumption and occupancy patterns, the heating behaviour in residential building is analysed. The results show that about 81.2% of the analysed households applied continuous heating strategy whether occupants stay in the building or not. About 39.5% of the total heating energy consumption in 229 households, is consumed during unoccupied hours. The result of this research shows that the heating control strategy considering occupancy patterns can be greatly reduce the heating energy consumption in residential building.
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Sangi, Roozbeh, Paula Martínez Martín, and Dirk Müller. "Thermoeconomic analysis of a building heating system." Energy 111 (September 2016): 351–63. http://dx.doi.org/10.1016/j.energy.2016.05.112.
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Miezis, Martins, Dzintars Jaunzems, and Nicholas Stancioff. "Predictive Control of a Building Heating System." Energy Procedia 113 (May 2017): 501–8. http://dx.doi.org/10.1016/j.egypro.2017.04.051.
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Abbasov, Yorkin Sodikovich, and Mavlonbek Alimatjon ugli Usmonov. "Design of an Effective Heating System for Residential and Public Buildings." Central Asian Journal of Theoretical and Applied Science 5, no. 3 (2022): 341–46. https://doi.org/10.5281/zenodo.10624299.
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Heating of public buildings is one of the main sections of construction equipment. Heating installation of systems and appliances is carried out simultaneously with the start of construction of the building firstly, it is done together. In recent years, the efficiency of heating systems has been improved in two directions. Firstly, thanks to new innovations and modernization of old heating systems, the efficiency and energy efficiency of heating boilers will increase. The second direction that increases efficiency is the improvement of thermal insulation cladding materials used in construction.
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Sit, M.L., A.A. Juravliov, D.M. Suvorov, and L.A. Suvorova. "Combined District Heating System CHP-Local Heat Pumps. Part II." Problemele Energeticii Regionale 2(46) (March 15, 2020): 108–22. https://doi.org/10.5281/zenodo.3898322.
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The paper discusses options for district heating systems, including thermal power plants and heat pumps installed in individual heating centers of multi-story buildings. The aim of the work is to evaluate the energy efficiency of the options under consideration and the method of connecting piping to high-temperature return network water with a carbon dioxide heat pump. The goal is achieved due to the fact that one of the evaporators of the heat pump heating the new building or half of the existing building uses heat from return network water or from the first half of the building or from the whole building, and the second evaporator uses the heat of the outdoor air. Moreover, for high-temperature heating schedules, heat is taken out through a two-stage intermediate circuit containing two pumps, 2 heat exchangers and two expansion vessels. Significant results of the work are the developed scheme of the intermediate circuit of the carbon dioxide heat pump, which combines both the possibilities of working in a quantitative heat supply system and in the preparation of hot water for buildings during the non-heating period. The significance of the obtained results lies in the fact that the proposed technical solution allows to reduce fuel consumption for thermal power plants, consumers' expenses when paying for their consumed energy resources, increase the number of heat consumers connected to the thermal power plants through the use of heat pumps. The schemes of intermediate circuits of heat pumps for the quantitative law of regulating the operation mode of the heat supply system are also considered.
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S., Visweswara Rao, Rajashekar K., Sandeep M., and Dharmendar Kumar R. "Variable Refrigerant Flow System." International Journal of Trend in Scientific Research and Development 4, no. 1 (2019): 446–50. https://doi.org/10.5281/zenodo.3605908.
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The heating, ventilation, and air conditioning HVAC system is arguably the foremost advanced system put in in an exceedingly building and is liable for a considerable part of the entire building energy use. Variable refrigerant flow is varied exploitation either and discoverer controlled variable speed mechanical device , or multiple mechanical device of varied capability in response to changes within the cooling heating needed within the air conditioned space. The variable refrigerant Flow VRF air conditioning system as a high degree of intellectual control, with every indoor unit being able to directly start the air conditioning system, freely setting and regulating the temperature, the volume and direction of the current ,and the mode. Every indoor unit can separately control it start and close, and regulate its operations. HVAC style involves quite simply the load estimate calculation the load calculation is that the start of the repetitious HVAC style procedure. This strategy guideline discusses the data required to style the air distribution system to deliver the right quantity of conditioned air to an area. Heating and cooling masses area unit dependent upon the building location, sighting, and therefore the construction of the house, whereas the instrumentation choice and therefore the air distribution style area unit dependent upon the loads and each other. The Variable refrigerant flow systems may be a particularly good option for buildings with multiple zones or wide variance heating cooling loads across many different internal zones. These systems provide individual control and the most versatile of the multi split systems. Hotels, school and office buildings are good examples. S. Visweswara Rao | K. Rajashekar | M. Sandeep | R. Dharmendar Kumar "Variable Refrigerant Flow System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-1 , December 2019, URL: https://www.ijtsrd.com/papers/ijtsrd29566.pdf
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DESHKO, VALERII, INNA BILOUS, IRYNA SUKHODUB та TETYANA BOIKO. "ЕНЕРГОСПОЖИВАННЯ НАВЧАЛЬНИХ КОРПУСІВ УНІВЕРСИТЕТУ В УМОВАХ КАРАНТИННИХ ОБМЕЖЕНЬ УКРАЇНИ". Technologies and Engineering, № 2 (24 грудня 2021): 9–19. http://dx.doi.org/10.30857/2786-5371.2021.2.1.
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Target. To analyze the features of energy consumption of the building of the educational building No. 17 of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute" in the conditions of quarantine restrictions in the implementation of energy-saving heating schemes.Methodology. Dynamic energetic modeling of a university academic building created in the DesignBuilder software environment under normal and quarantine modes.Results. Recommendations for the implementation of energy-saving modes of heating the building of the academic building of the university during the period of distance learning when introducing quarantine restrictions in Ukraine.Scientific novelty. An integrated approach has been developed to an in-depth analysis of energy consumption under conditions of partial use of the premises of educational buildings during the quarantine period. It is substantiated that the use of premises with partial operation of the building requires additional unit costs for heating needs.Practical significance. Simulation dynamic modeling of the building's energy consumption for heating for various modes of operation and employment / use of premises of educational buildings during the quarantine period in Ukraine, the results of the study will allow to obtain a set of energy characteristics of the building as a whole and its individual rooms / zones for hourly changes in internal operating conditions and external climatic conditions. The use of the proposed scheme of operation of the heating system of the building of the educational building allows to reduce energy consumption during the heating period by 8,5% compared to energy consumption during normal operation, which is economically feasible in conditions of partial occupancy of the building during quarantine restrictions (during lockdown) and an unpredictable macroeconomic situation on the energy market, causing a trend towards an increase in prices for basic energy resources.
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Wang, Xue Ying, Dong Xu, and Ya Jun Wu. "Analysis about Solar Water Heating System and Residential Building Integrated Design." Applied Mechanics and Materials 193-194 (August 2012): 13–16. http://dx.doi.org/10.4028/www.scientific.net/amm.193-194.13.
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The solar energy is a free from contamination of green energy, the application of solar energy in building is booming in recent years. Solar water heating system in the building and the organic combination are also getting forward. In order to meet the people of high quality life pursuit, more and more housing are designed with solar water heating system. The paper expounds the necessity and importance about solar water heating system integration and illustrates that residential building solar hot water system of building integrated principle, emphasize we should use the life cycle of the technology economic evaluation methods to speed up the establishment residential building solar water heating system and building integrated evaluation system.
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Es-Sakali, Niima, Samir Idrissi Kaitouni, Imad Ait Laasri, Mohamed Oualid Mghazli, Moha Cherkaoui, and Jens Pfafferott. "Building energy efficiency improvement using multi-objective optimization for heating and cooling VRF thermostat setpoints." E3S Web of Conferences 396 (2023): 03032. http://dx.doi.org/10.1051/e3sconf/202339603032.
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The variable refrigerant flow system is one of the best heating, ventilation, and air conditioning systems (HVAC) thanks to its ability to provide thermal comfort inside buildings. But, at the same time, these systems are considered one of the most energy-consuming systems in the building sector. Thus, it is crucial to well size the system according to the building’s cooling and heating needs and the indoor temperature fluctuations. Although many researchers have studied the optimization of the building energy performance considering heating or cooling needs, using air handling units, radiant floor heating, and direct expansion valves, few studies have considered the use of multi-objective optimization using only the thermostat setpoints of VRF systems for both cooling and heating needs. Thus, the main aim of this study is to conduct a sensitivity analysis and a multi-objective optimization strategy for a residential building containing a variable refrigerant flow system, to evaluate the effect of the building performance on energy consumption and improve the building energy efficiency. The numerical model was based on the EnergyPlus, jEPlus, and jEPlus+EA simulation engines. The approach used in this paper has allowed us to reach significant quantitative energy saving by varying the cooling and heating setpoints and scheduling scenarios. It should be stressed that this approach could be applied to several HVAC systems to reduce energy-building consumption.
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Salo, Sonja, Aira Hast, Juha Jokisalo, et al. "The Impact of Optimal Demand Response Control and Thermal Energy Storage on a District Heating System." Energies 12, no. 9 (2019): 1678. http://dx.doi.org/10.3390/en12091678.
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Demand response has been studied in district heating connected buildings since the rollout of smart, communicating devices has made it cost-effective to control buildings’ energy consumption externally. This research investigates optimal demand response control strategies from the district heating operator perspective. Based on earlier simulations on the building level, different case algorithms were simulated on a typical district heating system. The results show that even in the best case, heat production costs can be decreased by only 0.7%. However, by implementing hot water thermal storage in the system, demand response can become more profitable, resulting in 1.4% cost savings. It is concluded that the hot water storage tank can balance district heating peak loads for longer periods of time, which enhances the ability to use demand response strategies on a larger share of the building stock.
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Yang, Rui. "Study on the Standardization of Civil Building Heating Design Flow." Advanced Materials Research 575 (October 2012): 37–41. http://dx.doi.org/10.4028/www.scientific.net/amr.575.37.
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Along with the increasing more civil buildings constructed in the real world, it becomes extremely critical to implement optimization and design on the internal structure of buildings at present. Heating design not only has a close relationship with the full exertion of the use performance of buildings and also plays a larger influence on the quality of the daily life of the home owners. For this reason, it is highly necessary for the design units to implement the operations in accordance with the required standards when making a plan on a building heating system, aiming at drawing up a more scientific heating solution for the normal use. According to the related problems existing in the current building heating design flows, the standardized flow of civil building design is analyzed by the author in this paper.
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Cai, YK, H. R. Xie, Y. Ma, S. Hokoi, and Y. H. Li. "Active Environmental Control Strategies for Brick Historical Buildings, Combining Heritage Conservation and Thermal Comfort." Journal of Physics: Conference Series 2069, no. 1 (2021): 012080. http://dx.doi.org/10.1088/1742-6596/2069/1/012080.
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Abstract For historical buildings, it is a challenge to utilize HVAC system to improve the thermal comfort within a reasonable range without increasing the risk of deterioration. This research selected a traditional temple building located in Hubei Province, China, aiming to clarify the impact of different operation modes of heating systems on the preservation status of the building, and to further propose reasonable active environmental control strategies. A two-dimensional hygrothermal model of the temple building was established and used to evaluate the influence of different heating parameters, operation schedules, and ventilation strategies on heritage conservation and thermal comfort with the application of floor heating. The main conclusions are as follows: for Honghua Temple, low-level heating at 16 °C with conventional ventilation or heating at 18°C with enhanced ventilation is the preferred solution; enhanced ventilation mode can reduce the risk of mold growth while satisfying the convenience of using the Buddha worship space; for intermittent heating in winter, preheating the system is necessary, and maintaining a low heating level at night is more conducive compared with shutting down the system directly; the impact of evaporation increasing caused by heating should be weighed in active environmental control.
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Bagheri, Ali, Konstantinos N. Genikomsakis, Sesil Koutra, Vasileios Sakellariou, and Christos S. Ioakimidis. "Use of AI Algorithms in Different Building Typologies for Energy Efficiency towards Smart Buildings." Buildings 11, no. 12 (2021): 613. http://dx.doi.org/10.3390/buildings11120613.
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Buildings’ heating and cooling systems account for an important part of total energy consumption. The EU’s directives and engagements motivate building owners and relevant stakeholders in the energy and construction sectors towards net zero energy buildings by maximizing the use of renewable energy sources, ICT, and automation systems. However, the high costs of investment for the renovation of buildings, in situ use of renewable energy production, and installation of expensive ICT infrastructure and automation systems in small–medium range buildings are the main obstacles for the wide adoption of EU building directives in small- and medium-range buildings. On the other hand, the concept of sharing computational and data storage resources among various buildings can be an alternative approach to achieving smart buildings and smart cities where the main control power resides on a server. Unlike other studies that focus on the implementation of AI techniques in a building or separated buildings with local processing resources and data storage, in this work a corporate server was employed to control the heating systems in three building typologies and to examine the potential benefits of controlling existing buildings in a unified energy-savings platform. The key finding of this work is that the AI algorithms incorporated into the proposed system achieved significant energy savings in the order of 20–40% regardless of building typology, building functionality, and type of heating system, despite the COVID-19 measures for frequent ventilation of the buildings, even in cases with older-type heating systems.
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Xue, Yun, and Xiao Jing Wang. "Energy-Saving Renovation Research of Existing Residential Buildings in Northern." Applied Mechanics and Materials 587-589 (July 2014): 252–55. http://dx.doi.org/10.4028/www.scientific.net/amm.587-589.252.
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Energy-saving renovation of existing residential buildings in northern is a systematic project, including the main content of energy-saving renovation project system research of existing residential buildings –“energy-saving reconstruction of building enclosure structure , building indoor heating system measurement and temperature regulation reform ".
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Ju, Yuchen, Joakim Lindholm, Moritz Verbeck, et al. "Demand response in the German district heating system." IOP Conference Series: Earth and Environmental Science 1185, no. 1 (2023): 012016. http://dx.doi.org/10.1088/1755-1315/1185/1/012016.
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Abstract The renewable energy share in energy supply systems is increasing for carbon neutrality. The realization of carbon neutrality can be supported by demand response (DR) strategies. This paper analyzed the DR control benefits of a German district heating (DH) system. For the first step, in German conditions, three building types were simulated by IDA-ICE software with and without a rule-based DR control. Secondly, a community was established based on the heat demand of the simulated buildings. This paper selected two different production scenarios. One scenario consisted by a biofuel CHP and gas boilers and the other one included a heat pump, an electric heater, and a solar thermal storage. After that, the production of the two scenarios with and without DR was optimized by the HGSO tool and it calculated the total production costs and CO2 emissions. It indicates that building owners and DH producers all earn benefits from the application of demand response. The maximum heating cost saving by DR is 4.9% for building owners. In the optimized two production scenarios, DH producers gain higher financial benefits and there are less CO2 emissions. The maximum total generation cost and CO2 emission savings are 12.6% and 8.6%, respectively.
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Bae, Sangmu, Yujin Nam, and Joon-Ho Choi. "Comparative Analysis of System Performance and Thermal Comfort for an Integrated System with PVT and GSHP Considering Two Load Systems: Convective Heating and Radiant Floor Heating." Energies 13, no. 20 (2020): 5524. http://dx.doi.org/10.3390/en13205524.
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The zero-energy building (ZEB) concept has a high potential for securing energy savings in the building sector. To achieve ZEB, various active systems, including renewable systems such as photovoltaic, solar heating, and geothermal systems, have been developed. However, the existing systems are costly or not optimized. To overcome these issues, the authors previously developed an integrated tri-generation system. In this research, the previously developed system was comprehensively analyzed considering the indoor thermal comfort and energy efficiency to develop a design and operation method for the integrated system. Two different heating systems (convective heating and radiant floor heating) were employed in the tri-generation system, and their system performance, predicted mean vote (PMV), and predicted percentage of dissatisfied (PPD) were compared using simulations. The results showed that the heating coefficient of power of the radiant floor heating system was 18.8% higher than that of the convective heating system. Moreover, the radiant floor heating system (Case 4) met the PMV and PPD standards during all the heating periods. Overall, radiant floor heating was found to be more efficient than convective heating. The results confirm that radiant floor heating is more suitable than convective heating considering the indoor thermal comfort of occupants.
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Brembilla, Christian, Ronny Renman, Mohsen Soleimani-Mohseni, Ronny Östin, and Thomas Olofsson. "The impact of control strategies on space heating system efficiency in low-energy buildings." Building Services Engineering Research and Technology 40, no. 6 (2019): 714–31. http://dx.doi.org/10.1177/0143624418822454.
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In this study efficiency factors measure the thermal energy performance for space heating. This study deals with the influence of control strategies on the efficiency factors of space heating and its distribution system. An adaptive control is developed and applied to two types of heating curves (linear and non-linear) for a low-energy building equipped with renewable energy sources. The building is modelled with a hybrid approach (law-driven + data-driven model). The model of the floor heating is calibrated and validated by assessing the uncertainty bands for flow temperatures and mass flow rate. Benefits and drawbacks of linear and non-linear heating curves are highlighted to illustrate their impact on space heating thermodynamic behaviour and on the efficiency factors of the space heating system. Practical application: The study reveals that applying commercial building energy simulation software is worthwhile to determine reliable energy performance predictions. Massless building models are not capable of simulating the thermodynamic response of a building subjected to different control strategies. In particular, the application of different heating curves (linear and non-linear) to massless building models leaves the amount of mass flow rate delivered to the space heating unchanged when the building is subjected to sharp variations of the outdoor temperature.
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Han, Haijun, Hongyan Zhou, Ouyang Dong, and Junjie Ma. "Experimental Study on Phase Change Material with Solar Heater System for Building Heating." Coatings 12, no. 10 (2022): 1476. http://dx.doi.org/10.3390/coatings12101476.
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An integrated solar heating system with a new type of phase change material (PCM), solar collectors and test building were developed. The exothermal and endothermal behaviors of the PCM were determined, and the stability and comfort of the solar heating system were researched. The integrated solar heating system was operated on the test building heating for one heating period, and the temperature of heating rooms, the outdoors, and the contrast rooms were recorded and collected by a data acquisition system. The collected temperature data indicated that the integrated solar heating system with PCM could produce heating stability and continuity; the average temperature of the heating rooms using PCM was 4.6 °C higher than the contrast rooms, which did not use PCM. Taking 16 °C as the lowest standard room temperature, the integrated solar heating system could save approximately 45% of energy during one heating period. The successful development of an integrated solar heating system, coupled with phase change materials and solar collectors for building heating will lay a solid foundation for achieving the goals of building energy conservation and “carbon peaking and carbon neutrality”.
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Aleksakhyn, A. A., O. V. Kruhliakova, A. V. Boblovskyi, and L. I. Tiutiunyk. "PARAMETERS OF HOT WATER SUPPLY HEAT EXCHANGERS FOR HEAT STATIONS OF INSULATED BUILDINGS AT ONE-STAGE CONNECTION SCHEME." Integrated Technologies and Energy Saving, no. 4 (December 30, 2024): 59–66. https://doi.org/10.20998/2078-5364.2024.4.06.
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The peculiarities of functioning of centralized heat supply systems of residential microdistricts at carrying out works on ‘insulation’ of buildings in operation, namely, parameters of operation of hot water supply heating units are considered. The influence of the heating load reduction due to the works on increasing the heat transfer resistance of the building structures on the flow rate of network water and heat exchange area of hot water supply heaters has been analyzed. Estimates are made for conditions of use of one-stage parallel scheme connection for heat exchangers to heat distribution networks. The known relations for such most widespread in heat supply systems heat exchangers as plate apparatuses are used at calculations of a heat transfer surface. The range of change of the heat transfer surface of hot water heaters and the flow rate of network water depending on the ratio of the maximum heat loads of hot water supply and heating and the degree of insulation efficiency of the building is determined. Formulas for determining the parameters of hot water supply heat exchangers are proposed. The formulas are valid in the range of reduction of heat consumption for heating of the building from 0 to 35 %. Assessment of the heating load reduction is performed on condition that the thermal modernization of a building constructed in accordance with the building requirements in force several decades ago provides modern requirements for the thermal resistance of building structures. The temperature of water in the heating system of the insulated building is determined depending on the building insulation efficiency, provided that the water flow rate through the heating system of the building before and after its insulation is unchanged. The range of variation of the ratio of hot water supply and heating heat loads accepted for consideration is 0,6–1,2. The obtained results can be used at comparison of connection schemes of heat exchangers for hot water heating for installation on individual heat points of insulated buildings.