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Journal articles on the topic 'Heat pump utilization'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Zhang, Hu, and Jinxu Lao. "Economic Analysis of Two Heat Pumps to Recover Heat from Circulating Water." E3S Web of Conferences 358 (2022): 01009. http://dx.doi.org/10.1051/e3sconf/202235801009.

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The use of heat pump to recover the condensing heat of the unit can realize the cascade utilization of energy, improve the utilization efficiency of energy, not only can effectively increase the heating capacity of the unit, but also can improve the use efficiency of heating extraction steam, so as to improve the economy of the thermal power plant. Heat pumps suitable for use in power plants can be divided into absorption heat pumps and compression heat pumps. Which type of heat pump is more economical needs specific judgment for the specific application environment. In this paper, a specific

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2

PAZIUK, Vadym, Oleksii TOKARCHUK, and Serhii SHAPOVALIUK. "HEAT PUMPS AS AN ENERGY-EFFICIENT MEANS OF GRAIN DRYING." ENGINEERING, ENERGY, TRANSPORT AIC, no. 1(124) (April 22, 2024): 33–40. http://dx.doi.org/10.37128/2520-6168-2024-1-4.

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Large energy costs for the process of drying grain crops associated with the increase in the price of energy carriers pose the task of reducing the energy component to the developers. The presented article focuses on the development of measures to reduce energy costs for the grain drying process using heat pumps. The considered advantages of heat pumps indicate the possibility of using these units for drying grain crops. Especially noteworthy is the increase in energy efficiency of heat pumps due to the conversion of ambient heat with a low temperature potential into heat with a high temperatu

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3

Smolen, Slavomir, and Marzena Budnik-Rodz. "Technical and economic aspects of waste heat utilization." Thermal Science 11, no. 3 (2007): 165–72. http://dx.doi.org/10.2298/tsci0703165s.

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The main aim of the following presentation is the comparison and evaluation of the conditions for waste heat utilization in Germany and in Poland. This paper presents synthetically the results of economic analysis of the different technical variants. The employment of heat pumps and other heat transformers, respectively, can reduce the energy consumption, but using of those technical possibilities depends mainly on the economic aspects. The main parameters of the financial calculations were the energy and equipment costs but beyond it a number of other factors were also considered and compared

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4

Han, Zheyuan, Kaiying Wang, Limin Dai, Kui Li, and Xiaoshuai Wang. "Recent Application of Heat Pump Systems for Environmental Control in Livestock Facilities–A Review." Agriculture 14, no. 12 (2024): 2309. https://doi.org/10.3390/agriculture14122309.

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The application of heat pump systems in agriculture, especially within livestock farms, has attracted considerable attention due to their potential for energy efficiency and improved environmental sustainability. Many studies have explored using heat pumps to optimize the indoor environments of barns. This review offers a comprehensive overview and analysis of the current applications of heat pump systems in livestock barn environmental control. Initially, it outlines the fundamental principle of heat pumps and the various types of heat pumps. Then, the technical advantages of the heat pump sy

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5

Zhao, Jing Bo. "Comprehensive Utilization of Solar Assisted Heat Pump and Ground Source Heat Pump in Severe Cold Region." Applied Mechanics and Materials 448-453 (October 2013): 2790–93. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.2790.

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In this paper, the principle of solar assisted heat pump and ground source heat pump was introduced, the comprehensive utilization of solar assisted heat pump and ground source heat pump was discussed in severe cold region, the article illustrated the advantages and matters of the system to which need pay attention, and pointed out that the comprehensive utilization of the combination solar assisted heat pump and ground source heat pump had a substantial economic and environmental benefits in severe cold region.

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6

Lin, Yaolin, Zhenyan Bu, Wei Yang, Haisong Zhang, Valerie Francis, and Chun-Qing Li. "A Review on the Research and Development of Solar-Assisted Heat Pump for Buildings in China." Buildings 12, no. 9 (2022): 1435. http://dx.doi.org/10.3390/buildings12091435.

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The building sector accounts for over 40% of global energy consumption. The utilization of renewable energy systems such as the solar-assisted heat pump (SAHP) in buildings has been shown to improve building energy efficiency and achieve carbon neutrality. This paper presents a review of the research and development of solar-assisted heat pumps for buildings in China. It firstly introduces the different stages of solar-assisted heat pump research. Secondly, the research on different types of heat pumps, the core components of heat pumps, the computer software used, and the economic feasibility

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7

Çomakli, Ömer, Bedri̇ Yüksel, Y. Ali̇ Kara, Abdullah Çaǧlar, and Yahya Tülek. "Heat pump utilization in milk pasteurization." Energy Conversion and Management 35, no. 2 (1994): 91–96. http://dx.doi.org/10.1016/0196-8904(94)90067-1.

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8

Duan, Rui. "Study on Performance of Air Source Heat Pump Water Heater." Advanced Materials Research 608-609 (December 2012): 987–93. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.987.

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This paper introduce the working principle and classification of air source heat pump water heater. Thermodynamic calculation of the air source heat pump water heater is carried out, such as air source heat pump water heating coefficient, energy saving effect, and the cooling effect of the surrounding environment, and primary energy utilization of heating conditions of several forms. The primary energy utilization rate of air source heat pump water heater is the highest, and showing a good energy-saving.

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9

Liu, Songyang, Chao Chai, Shaokun Jia, and Jie Bai. "Research on energy efficiency improvement method of heat pump air conditioning based on multi-energy coupling theory." Journal of Physics: Conference Series 2993, no. 1 (2025): 012026. https://doi.org/10.1088/1742-6596/2993/1/012026.

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Abstract In light of the non-renewable nature of coal, oil, and other conventional fossil fuels, it is crucial to enhance energy efficiency, explore alternative energy sources, and bolster the utilization of renewable energy. This paper delves into the enhancement of heat pump efficiency within an integrated energy system, leveraging the multi-energy coupling mechanism. The study commences with an analysis of ground source and water source heat pump technologies, examining their output models. Subsequently, strategies for improving heat pump efficiency are investigated. Data analysis confirms

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10

Cheng, Yonggao, Yanqing Wu, and Siran Bai. "A Smart Community Waste Heat Recovery System Based on Air Source-Sewage Source Compound Heat Pump." International Journal of Heat and Technology 39 (April 30, 2021): 503–11. http://dx.doi.org/10.18280/ijht.390220.

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Compared with the traditional hot water production methods, heat pump systems have the unique advantages of high efficiency, energy saving, and eco-friendly, so they have a very good promotion and application prospect. The sewage source heat pump systems can recover the waste heat of high-temperature sewage produced in residential communities, for this reason, this study integrated the proven air source heat pump technology with the sewage source heat pump technology and conducted a research on the smart community waste heat recovery system based on the air-source/sewage-source Compound Heat P

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11

Cirstolovean, I. L., and Paraschiva Mizgan. "Geothermal Energy Utilization for Buildings Services." Journal of Applied Engineering Sciences 10, no. 1 (2020): 7–10. http://dx.doi.org/10.2478/jaes-2020-0002.

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AbstractThe Earth’s large amount of thermal energy is virtually an inexhaustible resource often placed too deep in the ground. Making use of this kind of energy is possible in limited areas. In this paper we analysed a GSHP system, in Galati city (Romania), for which we monitored the available thermal energy. For the analysis we used operational reliability theory, the concept of degradation, which in this case means a reduction of the ground’s thermal capacity as a result of continuous exploitation, meaning low temperature of the thermal agent used for transporting the heat from the ground to

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12

Kovalenko, Yurii, Mykhailo Katkov, Ievgenii Ponomarenko, Myroslav Malovanyy, and Ivan Tymchuk. "Utilization of drainage water heat in flooded urban areas." Ecological Questions 33, no. 2 (2022): 1–18. http://dx.doi.org/10.12775/eq.2022.011.

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The possibilities of using drainage water from flooded urban areas as a source of energy for heat supply of buildings located in these areas were considered. The use of heating technological workflows based on the utilization of drainage water heat with heat pumps was substantiated. A method was developed for determining the required energy potential of drainage water and for determining technological characteristics of the proposed workflows. A comparative analysis of various workflows was carried out and the advantages of the water-to-water heat pump along with the heat-insulated flooring sy

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13

Sun, Jian, Yinwu Wang, Yu Qin, Guoshun Wang, Ran Liu, and Yongping Yang. "A Review of Super-High-Temperature Heat Pumps over 100 °C." Energies 16, no. 12 (2023): 4591. http://dx.doi.org/10.3390/en16124591.

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The high-temperature heat pump, as a low-carbonization technology, has broad application prospects in replacing boiler heating, reducing carbon dioxide emissions, and improving the energy utilization efficiency. In this paper, the working fluid, cycle process, key equipment (compressor), and application scenarios of high-temperature heat pumps are introduced in detail. Firstly, the research direction of the working fluid is introduced and the existing working fluid substitution is analyzed and summarized. Then, the characteristics of different heat pump cycles such as compression, absorption,

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14

Sun, Jian, Yinwu Wang, Kexin Wu, Zhihua Ge, and Yongping Yang. "Analysis of a New Super High Temperature Hybrid Absorption-Compression Heat Pump Cycle." Energies 15, no. 20 (2022): 7515. http://dx.doi.org/10.3390/en15207515.

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Utilization of high-temperature energy in industrial production processes is often exhausted by huge low-temperature waste heat without recovery. Thus, energy efficiency is quite limited. Heat pumps are widely used as a high-efficiency waste heat recovery system and are divided into vapor compression cycle, driven by electricity, and absorption type, driven by steam or hot water. However, compression heat pumps are quite difficult to reach more than 100 °C due to the temperature and compression limits of compressors and the working medium. Meanwhile, the COP (coefficient of performance) of an

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15

Tseyzer, Grigoriy, Olga Ptashkina-Girina, and Olga Guseva. "Efficiency of use of waste heat energy on the example of Chelyabinsk." E3S Web of Conferences 140 (2019): 11003. http://dx.doi.org/10.1051/e3sconf/201914011003.

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We consider the possibility of improving the existing heat-suppling system in Chelyabinsk through the introduction of heat pump technology for the disposal of waste low-grade heat. Sources of information concerning the ways of utilization of waste thermal energy, the principles of work of heat pumps, classification of city sources of waste heat are analyzed. The technique directed to assess the effectiveness of applying heat pumps for each category of city sources of waste thermal energy is designed. The calculated assessment showed that the utilization of waste heat in the conditions of Chely

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16

Sagawa, Daishi, Kenji Tanaka, Fumiaki Ishida, Hideya Saito, Naoya Takenaga, and Kosuke Saegusa. "P2P Electricity Trading Considering User Preferences for Renewable Energy and Demand-Side Shifts." Energies 16, no. 8 (2023): 3525. http://dx.doi.org/10.3390/en16083525.

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In the global trend towards decarbonization, peer-to-peer (P2P) energy trading is garnering increasing attention. Furthermore, energy management on the demand side plays a crucial role in decarbonization efforts. The authors have previously developed an automated bidding agent that considers user preferences for renewable energy (RE), assuming users own electric vehicles (EVs). In this study, we expand upon this work by considering users who own not only EVs but also heat pump water heaters, and we develop an automated bidding agent that takes into account their preferences for RE. We propose

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17

Wu, Ronghua, Hao Yu, and Ying Xu. "Computational Intelligence Powered Experimental Test on Energy Consumption Characteristics of Cold-Water Phase-Change Energy Heat Pump System." Computational Intelligence and Neuroscience 2022 (September 6, 2022): 1–9. http://dx.doi.org/10.1155/2022/1941855.

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In order to study the influence on the effective energy efficiency ratio, the energy consumption characteristics of a cold-water phase change heat pump system are discussed in this article. An experimental system of the cold-water phase-change energy heat pump system is designed and constructed, and then the deicing energy consumption and unit energy consumption of the heat pump system are analyzed by computational intelligence-powered methods. At last, the primary energy utilization ratio of the heat pump system is calculated. The results show that under the setting conditions, the deicing ca

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18

Kauko, Hanne, Daniel Rohde, and Armin Hafner. "Local Heating Networks with Waste Heat Utilization: Low or Medium Temperature Supply?" Energies 13, no. 4 (2020): 954. http://dx.doi.org/10.3390/en13040954.

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District heating enables an economical use of energy sources that would otherwise be wasted to cover the heating demands of buildings in urban areas. For efficient utilization of local waste heat and renewable heat sources, low distribution temperatures are of crucial importance. This study evaluates a local heating network being planned for a new building area in Trondheim, Norway, with waste heat available from a nearby ice skating rink. Two alternative supply temperature levels have been evaluated with dynamic simulations: low temperature (40 °C), with direct utilization of waste heat and d

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19

Ficker, T. "Simplified Peltier heat pump." European Journal of Physics 43, no. 4 (2022): 045102. http://dx.doi.org/10.1088/1361-6404/ac6a8f.

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Abstract A simplified version of the Peltier heat pump has been described and its prototype subjected to experimental testing. The core of the prototype consists of the thermoelectric module TEC1-12714S which is commonly available on the electro market. The simplified Peltier heat pump has shown effective functioning within the temperature difference of ΔT = 20 °C between the cold and hot sides of the used module. Although the presented prototype of the Peltier heat pump does not seem to be practical in thermal building technology, its utilization for illustrating the principle of thermoelectr

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20

Liu, Jian Tao, Xiao Cheng Ma, Kun Kun You, Jian Xing Ren, and Yong Wen Yang. "Analysis on Circulating Water Heat Utilization Technology in Thermal Power Plants." Advanced Materials Research 753-755 (August 2013): 2727–30. http://dx.doi.org/10.4028/www.scientific.net/amr.753-755.2727.

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The thermal power unit is the major unit in Chinas power supply. Circulating water has large low-temperature waste-heat which can be recycled. The principles of water source heat pump technology is analyzed, characteristic of circulating water system in thermal power unit is studied. Then two kinds of connection methods between circulating water system and water source heat pump (WSHP) are presented.

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21

Zhang, Jian, and Man Li Wang. "Lanzhou City Sewage Heat Utilization Measurement Analysis." Advanced Materials Research 594-597 (November 2012): 2095–98. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.2095.

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According to the actual operation of the pick sewage-source heat pump system established by the equivalent of heating, refrigerating capacity sewage equation of lanzhou city sewage contain energy are calculated.

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22

Zhao, Ning, Xiaoying Fan, Lite Ji, and Ya-mi Chen. "The analysis and research on variable operating condition of exhaust steam and waste heat Cascade utilization system of air cooling heating unit." E3S Web of Conferences 136 (2019): 01002. http://dx.doi.org/10.1051/e3sconf/201913601002.

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The series and parallel exhaust heat cascade utilization system was adopted by the large direct air cooling heating units. On the one hand, this system could reduce the adverse impact on power generation; on the other hand, it could reduce the temperature difference of heat transfer through step by step heating, the irreversible loss could be reduced, and the energy utilization efficiency could be made higher. On the basis of grasping the design performance of exhaust steam utilization system and the variable operating performance of main equipment by analysing the data of typical operating co

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23

Li, Yujiao, Peng Liu, Wei Wang, et al. "Optimizing the Layout of a Ground Source Heat Pump System with a Groundwater–Thermal Coupling Model." Energies 16, no. 19 (2023): 6895. http://dx.doi.org/10.3390/en16196895.

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The exploitation and utilization of shallow geothermal energy are of great significance to realizing China’s “double carbon” goal and promoting a green economy and social development. However, many projects using ground source heat pumps to exploit shallow geothermal energy have disrupted the thermal balance of the geothermal field due to insufficient preliminary research, affecting the sustainable utilization of shallow geothermal energy. Therefore, a 3D groundwater–thermal coupling model was established in this paper using the geotemperature data of a ground source heat pump system in Xi’an.

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24

Wang, Xin, Yong-qiang Feng, Tzu-Chen Hung, Zhi-xia He, Chih-Hung Lin, and Muhammad Sultan. "Investigating the System Behaviors of a 10 kW Organic Rankine Cycle (ORC) Prototype Using Plunger Pump and Centrifugal Pump." Energies 13, no. 5 (2020): 1141. http://dx.doi.org/10.3390/en13051141.

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Based on a 10-kW organic Rankine cycle (ORC) experimental prototype, the system behaviors using a plunger pump and centrifugal pump have been investigated. The heat input is in the range of 45 kW to 82 kW. The temperature utilization rate is defined to appraise heat source utilization. The detailed components’ behaviors with the varying heat input are discussed, while the system generating efficiency is examined. The exergy destruction for the four components is addressed finally. Results indicated that the centrifugal pump owns a relatively higher mass flow rate and pump isentropic efficiency

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25

Huo, Da, and Rendong Shen. "Cycle performance study on cascade high temperature air source heat pump system." Journal of Physics: Conference Series 2975, no. 1 (2025): 012010. https://doi.org/10.1088/1742-6596/2975/1/012010.

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Abstract Conventional air source heat pumps face significant challenges in producing hot water above 70°C at an ambient temperature of -30°C. Cascade heat pump systems allow for the utilization of two working fluids within their optimal thermodynamic properties, enabling heating over large temperature rise—exceeding 100°C. This study established a cascade heat pump cycle model, compared the thermal performance of 10 working fluids, and screened a working fluid combination with good thermal performance under the premise of environmental protection and safety. When the low-temperature working fl

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26

Stepanova, O. A., R. A. Khamitov, T. N. Umyrzhan, and A. R. Khazhidinova. "ON THE USE OF HEAT PUMPS." Bulletin of Shakarim University. Technical Sciences 1, no. 2(14) (2024): 385–89. http://dx.doi.org/10.53360/2788-7995-2024-2(14)-48.

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The problems of energy saving and environmental friendliness in the issues of heat supply, hot water supply and energy-intensive industrial production are constantly in the center of attention and research. The relevance of such research is caused by the need to reduce fuel consumption, reduce harmful emissions from fuel combustion, and reduce thermal pollution of the atmosphere. Heat pumps are devices that operate on a reverse cycle, i.e. heat is transferred from less heated bodies to more heated ones, and the heat pump requires an external energy source. In recent years, heat pumps have been

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27

Kim, Jin-Seo, In-Ho Chung, Tong-Seop Kim, and Chan-Ho Song. "Thermal Performance Design and Analysis of Reversed Brayton Cycle Heat Pumps for High-Temperature Heat Supply." Energies 17, no. 12 (2024): 2953. http://dx.doi.org/10.3390/en17122953.

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This study examined the performance of reversed Brayton cycle heat pumps to supply heat above 300 °C. The aim was to overcome the current temperature limitations faced by heat pump technology in industrial heat supply sectors by examining the viability of the reversed Brayton cycle. In particular, the effects of the operating conditions on the cycle performance, such as the waste and return heat temperatures, were analyzed through thermal performance analysis. The reversed Brayton cycle heat pumps showed improved performance over conventional vapor compression cycle heat pumps when a heat supp

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28

Hu, Jianqing, Shanshan Fan, Bingjian Zhang, Chang He, Zuming Liu, and Qinglin Chen. "Optimal design of heat pump integrated low-grade heat utilization systems." Energy Conversion and Management 260 (May 2022): 115619. http://dx.doi.org/10.1016/j.enconman.2022.115619.

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29

OLISHEVSKYI, ILLIA. "РЕЗУЛЬТАТИ РОЗРОБКИ ТА ДОСЛІДЖЕННЯ ТЕХНОЛОГІЇ АВТОМАТИЗОВАНОГО ЕНЕРГОЕФЕКТИВНОГО КЕРУВАННЯ ТЕПЛОНАСОСНИМИ СИСТЕМАМИ МЕТОДАМИ КОМП’ЮТЕРНОГО ЕКСПЕРИМЕНТУ". Herald of Khmelnytskyi National University. Technical sciences 335, № 3(1) (2024): 419–28. http://dx.doi.org/10.31891/2307-5732-2024-335-3-58.

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The development of energy-efficient indoor management systems, involving the current engineering and technical solutions to control and optimize energy consumption, is both relevant and promising area. This allows addressing the issues of saving energy resources; improving energy efficiency; and strengthening energy independence. The use of geothermal heat pumps and air conditioning systems with heat utilization are the advanced areas for the development of energy-efficient technologies in the construction sector. The paper concerns the study of technical-functional and energy characteristics,

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Sun, Lei, Jia Fu Xiao, Chun Yu Ran, and Li Yun Zhang. "Ground Source Heat Pump and Conventional Heat Sources to Match the Design and Operation Mode for Energy Saving." Advanced Materials Research 724-725 (August 2013): 955–59. http://dx.doi.org/10.4028/www.scientific.net/amr.724-725.955.

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According to China's current energy present situation, the use of renewable energy, saving energy and reducing consumption has become the energy industry development should follow the basic principles. Ground-source heat pump and conventional heat source composite system as a kind of building energy efficiency technology, mainly reflected in soil source heat pump renewable energy utilization aspects. In this paper the soil source heat pump and conventional heat source matching design and operation mode research, from the matching design principle chart, operation mode, the practical engineerin

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31

Ran, Chun Yu, and Li Yun Zhang. "Ground Source Heat Pump and Conventional Heat Sources to Match the Design and Operation Mode for Energy Saving." Advanced Materials Research 648 (January 2013): 189–93. http://dx.doi.org/10.4028/www.scientific.net/amr.648.189.

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According to China's current energy present situation, the use of renewable energy, saving energy and reducing consumption has become the energy industry development should follow the basic principles. Electric boiler-ground source heat pump system as one kind of building energy saving technology, mainly in soil source heat pump renewable energy utilization. In this paper the boilers and soil source heat pump matching design and operation model research, from energy efficiency, economic and technical analysis, environmental benefit analysis into consideration, and concludes that the electric b

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Serey, Nicolas, Darem Ahmad, and Hussam Jouhara. "Air-to-air heat pump: review of recent advances and future potential." E3S Web of Conferences 116 (2019): 00074. http://dx.doi.org/10.1051/e3sconf/201911600074.

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As the demand for energy is increasing and due to more focus on the utilization of low impact energy heat sources, heat pumps are a renewable energy technology that transfers thermal energy from one place to another. Heat pumps are used in various applications such as space heating, space cooling, heating water and many others. Heat pumps have many configurations but in essence they compose of components which are found in all units. The framework for 2030 climate and energy policy has decided that greenhouse emissions must be reduced by 40%. This has therefore, increased the need to utilize l

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Qiu, Lin, and Qiang Li. "Analysis of Exergy Utilization Efficiency of Combined Cooling Heating & Power on Gas Engine-Driven Heat Pump System." Advanced Materials Research 171-172 (December 2010): 350–53. http://dx.doi.org/10.4028/www.scientific.net/amr.171-172.350.

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The exergy utilization efficiency is the better reasonable to measure quantity and quality of thermal system then energy utilization efficiency .This text analyzed the exergy utilization efficiency of gas engine-driven heat pump(GEHP) at different combined supply energy modes. . Simulation computes gives that the heat recover plays the important action for increases exergy utilization efficiency of GHP system, especially at combined heating and electricity operational models, and the rules of heat recollection ratio and heat recollection temperature to exergy utilization efficiency of CHCP sys

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Wang, Jiongming, Feng Wang, Zhenglong Yu, et al. "Study on the Steam Source Selection of Feed Pump Turbine Based on Energy Matching." Energy and Environment Research 11, no. 1 (2021): 86. http://dx.doi.org/10.5539/eer.v11n1p86.

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The first phase of a power plant has two subcritical 300 MW units, and each boiler feed water pump is equipped with two with 50% capacity steam driven feed pumps and one 50% capacity electric start-up feed pump. The two steam pumps are put into operation during normal operation. After the heat supply transformation in the unit of the first phase of this power plant and based on the calculation and analysis of the heat balance of the unit, it is found that there will be insufficient output of the feed pump due to the insufficient steam source after the flow-through transformation, which will af

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Zhang, Hua, Shuren Hao, Qing Yang, Zihong Wang, Wujun Dong, and Liangliang Guo. "Study on Storage Conditions and Suitability Zoning of Shallow Floor Energy in Nanchang City." Geofluids 2021 (October 23, 2021): 1–16. http://dx.doi.org/10.1155/2021/4230048.

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In the context of China’s carbon summit strategy, as renewable clean energy, the development and utilization of shallow geothermal energy has broad prospects. Based on the analysis of the occurrence conditions of shallow geothermal energy in Nanchang City, the suitability zoning of the ground source heat pump project in Nanchang City is studied by using the analytic hierarchy process. The results show that Nanchang is very suitable for the construction of the ground source heat pump system. Among them, the suitable area of the groundwater ground source heat pump is 252.17 km2, the basically su

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36

Noro, M., S. Mancin, and F. Cerboni. "Improving efficiency and renewables utilization by hybrid heating plants for industrial buildings." IOP Conference Series: Earth and Environmental Science 1106, no. 1 (2022): 012013. http://dx.doi.org/10.1088/1755-1315/1106/1/012013.

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Abstract In this paper, a typical industrial building was modelled using a dynamic simulation software in three very different climatic zones in Italy. On the basis of the thermal loads, a hybrid condensing radiant tubes heating system was modelled. The radiant tubes system was coupled to an air heating system with terminals placed in the building fed by two heat sources: one deriving from the condensation of the exhausted of the radiant tubes, and the other by a heat pump with external air heat source. The energy performance of the hybrid heating system was evaluated by optimizing the nominal

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37

Denysova, Alla, and Pavlo Ivanov. "MATHEMATICAL MODELING OF NON-STATIONARY HEAT PROCESSES IN THE GROUND HEAT PUMP SYSTEM." Bulletin of the National Technical University "KhPI". Series: Innovation researches in students’ scientific work, no. 2 (December 22, 2023): 11–17. http://dx.doi.org/10.20998/2220-4784.2023.02.02.

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In the work, an analytical study of the efficiency of heat pumps using soil energy for heating, taking into account the climatic conditions of theregion of operation, is performed, which meets the tasks of energy saving and allows reducing emissions of harmful substances into the environment. The main attention is paid to increasing the efficiency of utilization of the technical potential of the soil energy source by the heat pump system using vertical soil heat exchangers. A methodology based on use of the mathematical modeling apparatus as a scientifically based toolkit for calculating non-s

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Lim, Taesub, Yong-Kyu Baik, and Daeung Danny Kim. "Heating Performance Analysis of an Air-to-Water Heat Pump Using Underground Air for Greenhouse Farming." Energies 13, no. 15 (2020): 3863. http://dx.doi.org/10.3390/en13153863.

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As one of the main businesses in Jeju-do in South Korea, specialized local products are grown in greenhouses. For greenhouse farming, it is preferable to use geothermal heat pump systems for energy conservation because of the stable temperature of the ground. In the same manner, heat pumps using underground air is recommended for greenhouse farming since underground air can easily be obtained from porous volcanic rocks in Jeju-do. However, direct usage of the underground air is not feasible for planting in the greenhouse or livestock care because the underground air is relatively humid and its

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Zhu, Shangwen, Xiaohua Gu, Mengyi Duan, et al. "Analysis of the Influence Factors of the Crude Oil Temperature Maintenance System of Solar Sewage Heat Pumps in Cold Regions." Energies 16, no. 24 (2023): 8124. http://dx.doi.org/10.3390/en16248124.

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Traditional crude oil heating methods that use fossil fuels or electricity have the disadvantages of high consumption of nonrenewable resources, low energy utilization, and high carbon emissions. Therefore, it is urgent to develop green and sustainable crude oil heating technologies. In this paper, a solar synergistic sewage heat pump (SSHS) dual heat source crude oil temperature maintenance system is proposed. The system utilizes clean and sustainable solar energy to heat crude oil while combining sensible heat storage technology and the waste heat utilization technology of a sewage source he

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Denysova, Alla, and Oksana Zhaivoron. "INCREASING THE EFFICIENCY OF HEAT PUMP USING CIRCULATING WATER OF POWER PLANTS." Bulletin of the National Technical University "KhPI". Series: Innovation researches in students’ scientific work, no. 1 (August 30, 2023): 3–11. http://dx.doi.org/10.20998/2220-4784.2023.01.01.

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In the article analytical studies of the efficiency of heat pumps in the thermal schemes of thermal and nuclear power plants for centralized heating and hot water supply systems taking into account the climatic conditions of Ukraine have been carried out. This task meets the objectives of energy saving and reduces emissions of harmful substances into the environment. The main focus is on improving the efficiency of the heat pump power supply system, which integrates an alternative energy source. An analysis of the exergy parameters of heat pump cycles has been performed, which have made it pos

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Qin, Pan Pan, Hui Chen, Li Li Chen, Zhen Qu, Lu Ning Yu, and Shi Kui Liu. "Utilization of Waste Heat of Circulating Cooling Water in Hot-Stamping Power System." Advanced Materials Research 588-589 (November 2012): 1829–32. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.1829.

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This paper studies the possibility of using heat pump instead of cooling tower to decrease temperature and recover waste heat of circulating cooling water of power system. Making use of heat transfer theory the paper carried on analysis and calculation about recoverable waste heat of circulating cooling water in hot-stamping power system which includes hot-stamping, closing in and extrusion intermediate frequency induction furnace. The results show that the whole process can recover calories which is 2.642×106kJ per hour.Using the recycled calories can make 15.82 tons hot water per hour which

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Gao, Qing, Xue Zhi Zhou, Xiao Wen Zhao, Chun Qiang Ma, and Yu Ying Yan. "Development and Challenges of Groundwater Heat Pump in China." Applied Mechanics and Materials 193-194 (August 2012): 115–20. http://dx.doi.org/10.4028/www.scientific.net/amm.193-194.115.

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A groundwater heat pump (GWHP) is one type of ground source heat pump (GSHP) and is a major form of earth energy utilization, which can realize the direct use of groundwater energy or the reuse of stored underground energy. The energy conservation effect of GWHP plays an important role in the national energy strategy, but the groundwater environment has been affected and even damaged to some extent because of over-exploitation and unreasonable utilization. This paper reviews the development and challenges of GWHP in China and surveys the situation of groundwater utilization, which shows that l

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Wang, Jian Jun, Yan Feng Liu, and Qian Liu. "Study on Life Cycle Environmental Impact Assessment of Ground Resource Heat Pump Project." Advanced Materials Research 838-841 (November 2013): 1967–71. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.1967.

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With the popularization and application of Ground Source Heat Pump (GSHP) technology and the expanding scale of shallow geothermal exploitation, the environmental impact in the process of development and utilization is receiving more and more attention. According to the characteristics of ground source heat pump engineering, eBalance software is used to conduct research on life cycle environmental impact assessment. The result shows that more than 60% of resources consumption potential, acidification potential, and global warming potential derived from the process underground construction, and

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Bai, Jing, Yifei Jia, Siqi Cui, et al. "Experimental study on high temperature heat pump system with a double heat source cascade." Thermal Science 27, no. 3 Part A (2023): 1845–53. http://dx.doi.org/10.2298/tsci2303845b.

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In order to improve the thermal performance of a high temperature heat pump system, to realize the efficient heat recovery of industrial waste heat, and to make the combined utilization of low and medium temperature heat sources, a high temperature heat pump system with a double heat source cascade is proposed, which can absorb heat from industrial waste heat and the system is capable of heating water up to the required high temperature. The performance of the system is tested and analyzed. It is found that the inlet temperature of the medium temperature heat source has a significant impact on

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Park, Seung-Hoon, Yong-Sung Jang, and Eui-Jong Kim. "Design and Performance Evaluation of a Heat Pump System Utilizing a Permanent Dewatering System." Energies 14, no. 8 (2021): 2273. http://dx.doi.org/10.3390/en14082273.

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The earth provides a vast resource of groundwater from aquifers a few meters beneath the surface. Thus, buildings that use underground space must be equipped with dewatering wells to drain the permeated groundwater to the sewage pipelines to ensure the structural stability of the building. Although the inflowing groundwater temperatures and flow rates are stable enough for groundwater to be used as an energy source, 79% of the permeated groundwater is discarded through the sewers, generating significant sewerage expenses. This study introduced a novel heat exchanger module to utilize the perme

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Sergeyev, Vitaliy, Irina Anikina, Konstantin Kalmykov, and Ivan Naletov. "Efficiency of using heat pumps with various refrigerants in real steam turbine power units with PT-80 and T-250 turbines." E3S Web of Conferences 140 (2019): 10001. http://dx.doi.org/10.1051/e3sconf/201914010001.

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Prospects for increasing the efficiency of heat and electric energy-generation and heat-and-power supply at thermal power plants obviously draw attention to such modern and innovative technologies as heat pumps. Heat pumps allow efficient redistribution of energy flows. The abundance of low-potential heat carriers and heat sources in the cycle arrangement of the thermal power plants operation requires modernization of production and increase of the fuel heat utilization factor, therefore, reduction of specific fuel consumption for the production of heat and electricity. This paper analyzes the

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Luo, Ning, Wei Liu, and Yanglong Duan. "The combined application technology of solar heat utilization and ground source heat pump." Journal of Physics: Conference Series 2683, no. 1 (2024): 012003. http://dx.doi.org/10.1088/1742-6596/2683/1/012003.

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Abstract Energy issues play an increasingly important role in national security and economic development. The country has put forward the policy of building energy-saving and land-saving buildings. The application of the comprehensive utilization of renewable energy in the construction field has gradually become a need for technical progress and industry development. With the official promulgation and implementation of the Renewable Energy Law in 2006, the application of solar energy, geothermal energy, and other related renewable energy in the construction industry has attracted more and more

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Yan, Min, Jinli Ren, Yang Ma, Binjian Chen, Yan Gao, and Chunyuan Ma. "Thermo-economic analyses of the waste heat and water recovery system from flue gas by heat pump integrated with different heat utilization ways in coal-fired power plant." IOP Conference Series: Earth and Environmental Science 1152, no. 1 (2023): 012008. http://dx.doi.org/10.1088/1755-1315/1152/1/012008.

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Abstract To recover the waste heat and water simultaneously from flue gas after wet desulphurization, a novel method by adding a flash evaporation device and heat pump system was proposed. The thermal-economic theoretical models for systems integrated with three different heat utilization ways were established based on the method of equivalent enthalpy drop. A typical 300 MW coal-fired power plant was selected as a case to compare the thermo-economic performance. Results show that when the flue gas temperature decreased from 50°C to 30°C, the amounts of recovered waste heat and water could be

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Iokova, I. L., M. B. Perekhval, and I. E. Migutskii. "The “Smart Home” Heat Supply System Based on District Heating with the Utilization of Secondary Energy Resources Using a heat Pump." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 66, no. 5 (2023): 451–60. http://dx.doi.org/10.21122/1029-7448-2023-66-5-451-460.

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One of the most important aspects of a “smart home” is its heating system, which should provide comfortable living conditions for residents while also being energy-efficient. This article discusses an innovative approach to heating systems in “smart homes” based on centralized heating with the utilization of secondary energy resources using a heat pump. The proposed heating system combines the advantages of traditional centralized heating and the efficiency of heat pumps. The article presents a calculated scheme, for which a temperature chart was developed. A methodology for calculating heat l

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Miao, Ying Xia, Shu Xun Wang, Jin Zhao, and Jing Wang. "Sea Water Heat Pump Technology Development Review and Prospective Application." Applied Mechanics and Materials 587-589 (July 2014): 361–64. http://dx.doi.org/10.4028/www.scientific.net/amm.587-589.361.

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Sea water heat pump, which is an emerging ocean energy utilization technology with advantages of energy saving and environmental friendly, has great development potential in costal and islands areas. This article analyze the global development status, technologies and application prospects of sea water heat pump to give reference for its developments in costal and islands areas.

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