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Journal articles on the topic 'Combined heat and power system (CHP)'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Tanuj, Singh. "Studies on Gas Turbine Combined Heat and Power - A Review." Journal of Advanced Mechanical Sciences 2, no. 2 (2023): 66–69. https://doi.org/10.5281/zenodo.8101865.

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<em>Cogeneration (a system that provides both power and heat) is a method used to produce electricity while simultaneously using the exhausted heat energy of the flue gases. It is the most productive and effective use of the exhaust heat recovered. CHP utilizes the wasted heat of flue gases. Natural gas is used as the primary energy source; however, biomass is the sole source of energy in the renewable variant. Steam generation, electricity generation, and space heating are all handled by large CHP plants. A CHP plant comprises a primary mover, electricity generator, heat recovery system, and

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Fedotov, A., G. Vagapov, L. Grackova, and R. Abdullazyanov. "Rated Power Determination for Autonomous Micro Combined Heat and Power and Rechargeable Battery System." Latvian Journal of Physics and Technical Sciences 57, no. 6 (2020): 12–22. http://dx.doi.org/10.2478/lpts-2020-0030.

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AbstractAn autonomous micro combined heat and power (Micro-CHP) is usually installed to increase energy efficiency and reduce energy costs in areas remote from large power systems. The main goal of autonomous Micro-CHP is to provide residential and industrial areas with electricity and heat. By designing an autonomous Micro-CHP, one of the key issues is the determination of rated power, since the energy efficiency of equipment and the costs of fossil fuels depend on the rated power. The mathematical model can better calculate the necessary rated power for an autonomous Micro-CHP in the case of

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3

Blarke, Morten, and Henrik Lund. "Large-scale heat pumps in sustainable energy systems: System and project perspectives." Thermal Science 11, no. 3 (2007): 143–52. http://dx.doi.org/10.2298/tsci0703143b.

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This paper shows that in support of its ability to improve the overall economic cost-effectiveness and flexibility of the Danish energy system, the financially feasible integration of large-scale heat pumps (HP) with existing combined heat and power (CHP) plants, is critically sensitive to the operational mode of the HP vis-?-vis the operational coefficient of performance, mainly given by the temperature level of the heat source. When using ground source for low-temperature heat source, heat production costs increases by about 10%, while partial use of condensed flue gasses for low-temperature

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Volkova, Anna, Eduard Latosov, and Andres Siirde. "Heat Storage Combined with Biomass CHP under the National Support Policy. A Case Study of Estonia." Environmental and Climate Technologies 24, no. 1 (2020): 171–84. http://dx.doi.org/10.2478/rtuect-2020-0011.

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AbstractIn spite of the progressions in heat storage systems for combined heat and power’ (CHP) plants performance, these innovations have not been implemented in CHP-based district heating (DH) systems in some of the countries where DH systems are still being developed. An examination of environmental and economic advantages that can be gained as a result of heat storage installation into the DH system are necessary to effectively popularise heat storage as a DH system-improvement technology. A real large-scale biomass CHP-based DH system is investigated in this case study. Scenarios for two

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Prakash Arul Jose, J., P. Rajesh Prasanna, and Fleming Prakash. "New construction methodology-geothermal cogeneration plant efficiency improvements for environmental and economic sustainability using waste heat recovery system." International Journal of Engineering & Technology 7, no. 3 (2018): 1679. http://dx.doi.org/10.14419/ijet.v7i3.12623.

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Power station is used in geothermal cogeneration or Combined Heat and Power (CHP) plant to generate electric power and heat from a single process simultaneously. Industrial CHP gains attention due to its sustainability and its nature of carbon footprint reduction. In this regard, CHP is more effective than generating steam or burning fuel on-site, and electricity is imported from the grid. CHP is a combined system which finds applications in several techniques and thermal and fuel systems, and these functionalities can be integrated into prevail-ing building structures. In CHP, the modificatio

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De Souza, Ronelly, Melchiorre Casisi, Diego Micheli, and Mauro Reini. "A Review of Small–Medium Combined Heat and Power (CHP) Technologies and Their Role within the 100% Renewable Energy Systems Scenario." Energies 14, no. 17 (2021): 5338. http://dx.doi.org/10.3390/en14175338.

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The energy transition towards a scenario with 100% renewable energy sources (RES) for the energy system is starting to unfold its effects and is increasingly accepted. In such a scenario, a predominant role will be played by large photovoltaic and wind power plants. At the same time, the electrification of energy consumption is expected to develop further, with the ever-increasing diffusion of electric transport, heat pumps, and power-to-gas technologies. The not completely predictable nature of the RES is their well-known drawback, and it will require the use of energy storage technologies, i

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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 w

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Safari, Ashkan, and Arman Oshnoei. "An Overview of Recent AI Applications in Combined Heat and Power Systems." Energies 18, no. 11 (2025): 2891. https://doi.org/10.3390/en18112891.

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Combined heat and power (CHP) systems are among the important components for enhancing energy efficiency and sustainability by simultaneously generating electricity and useful thermal energy, reducing waste and costs. Consequently, the effective control of these systems is considered important. To that end, this paper provides a comprehensive review of the intelligent methodologies applied to CHP systems, emphasizing their prevalence in the USA and Europe through statistical insights. It outlines the mathematical foundations of CHP systems, analyzing the advancements in intelligent control met

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Ruan, Ying Jun, Qing Rong Liu, and Wei Guo Zhou. "Feasibility Study on Combined Heat and Power with Different Distributed Generation Technologies for Various Commercial Buildings." Advanced Materials Research 347-353 (October 2011): 664–72. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.664.

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This paper has examined the energy consumption characteristics for six different buildings including apartments, offices, commercial buildings, hospitals, hotels and educational facilities. Then 50000m2 development site for respective building’s type has been assumed as case study to evaluate the introduction effect of Combined Heat and Power (CHP). All kinds of CHP systems with different distributed generation technologies including Gas Turbine (GT), Gas Engine (GE), Diesel Engine (DE), Solid Oxide Fuel Cell (SOFC) and Polymer Electrolyte Fuel Cell (PEFC), have been simulated by using HEATMAP

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Lepiksaar, Kertu, Vladislav Mašatin, Igor Krupenski, and Anna Volkova. "Effects of Coupling Combined Heat and Power Production with District Cooling." Energies 16, no. 12 (2023): 4552. http://dx.doi.org/10.3390/en16124552.

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Over the past decades, combined heat and power production (CHP) has proven itself to be an efficient means of meeting both heat and power demands. However, high efficiency can be achieved with CHP plants when the heat load is sufficient, while lower-priority CHP plants must deal with the excess heat associated with power generation. This excess heat can be used for district cooling with absorption chillers. Although the absorption chiller is an efficient technology for using excess heat for cooling generation, its efficiency is very sensitive to driving hot water temperature. This paper provid

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Kaur, Paramjeet, Krishna Teerth Chaturvedi, and Mohan Lal Kolhe. "Economic Dispatch of Combined Heat and Power Plant Units within Energy Network Integrated with Wind Power Plant." Processes 11, no. 4 (2023): 1232. http://dx.doi.org/10.3390/pr11041232.

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Cogeneration, also known as a combined heat and power (CHP) system, produces both power and heat simultaneously. It reduces the operating costs and emissions by utilising waste heat from steam turbines and contributes to incapacitating the intermittency of renewable energy. The CHP-economic dispatch (CHP-ED) is needed to overcome the load dynamics as well as renewable intermittency. In this work, a CHP system connected with a wind power plant is considered for analysing the CHPED within a typical power system area. This study examines, the CHPED with and without a wind integrated energy networ

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Liao, Chun Hui, Zhi Gang Zhou, and Jia Ning Zhao. "Thermodynamic Analysis of Minimum Extraction Ratio for Coal-Fired CHP Plants." Applied Mechanics and Materials 472 (January 2014): 1052–56. http://dx.doi.org/10.4028/www.scientific.net/amm.472.1052.

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For evaluating the performance of combined heat and power district heating (CHP-DH) system, some thermodynamic indicators of CHP system, include energy efficiency, exergy efficiency, RPES and RAI, are introduced in this paper. Based on two condensed and heating dual purpose plants, the values of these indicators are calculated with different extraction ratio. The results show that RAI and RPES are more reasonable to be used to assess CHP-DH system and there is a minimum extraction ratio for each unit, which is 0.4 for given plants in this paper, to keep CHP-DH beneficial compared with separate

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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 w

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14

Guo, Junshan, Wei Zheng, Zhuang Cong, Panfeng Shang, Congyu Wang, and Jiwei Song. "Steam-Water Modelling and the Coal-Saving Scheduling Strategy of Combined Heat and Power Systems." Energies 15, no. 1 (2021): 141. http://dx.doi.org/10.3390/en15010141.

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China aims to peak carbon emissions by 2030. As a result, small-scale coal-fired combined heat and power (CHP) units and self-provided units are gradually shut down, and large-scale coal-fired CHP units are a solution to undertake the industrial heat loads. From the perspective of the industrial heat load allocation during the non-heating season, the problems regarding the coal-saving scheduling strategy of coal-fired CHP units are addressed. The steam-water equations of CHP units are established to analyze the heat-power coupling characteristics. The energy utilization efficiency, exergy effi

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15

Xuan, Ji, and Weijun Gao. "FEASIBILITY OF COMBINED HEAT AND POWER SYSTEM IN THE CENTRAL BUSINESS DISTRICT OF SHANGHAI." Transactions of the Canadian Society for Mechanical Engineering 33, no. 1 (2009): 39–50. http://dx.doi.org/10.1139/tcsme-2009-0005.

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As one of the most developed and energy intensive cities in China, the Shanghai’s municipal government tries to make Shanghai one of the leading cities of energy conservation in China. Expanding the use of combined heat and power (CHP) system is the one of the main ways to optimize Shanghai’s energy structure and to protect its environment. This paper aims to analyze the feasibility of introducing CHP in the central business district, in Shanghai, to determine the energy savings, environmental impact and economic efficiency. Three types of energy supply systems are considered: electricity-only

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16

Yazawa, Kazuaki, and Ali Shakouri. "Heat Flux Based Optimization of Combined Heat and Power Thermoelectric Heat Exchanger." Energies 14, no. 22 (2021): 7791. http://dx.doi.org/10.3390/en14227791.

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We analyzed the potential of thermoelectrics for electricity generation in a combined heat and power (CHP) waste heat recovery system. The state-of-the-art organic Rankine cycle CHP system provides hot water and space heating while electricity is also generated with an efficiency of up to 12% at the MW scale. Thermoelectrics, in contrast, will serve smaller and distributed systems. Considering the limited heat flux from the waste heat source, we investigated a counterflow heat exchanger with an integrated thermoelectric module for maximum power, high efficiency, or low cost. Irreversible therm

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17

Simone, Braccio, Gimelli Alfredo, Iossa Raffaele, Karimi Alì, Muccillo Massimiliano, and Phan Hai Trieu. "Battery–integrated combined cooling, heating and power plant (CCHP) through NH₃ – H₂O absorption system in a hospital facility." Journal of Physics: Conference Series 2648, no. 1 (2023): 012020. http://dx.doi.org/10.1088/1742-6596/2648/1/012020.

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Abstract Combined heat and power (CHP) systems have been employed in various applications for years. They are gaining increasing attention in the residential and small industrial sectors for their primary energy saving potential and CO 2 emissions reduction. Additionally, in specific applications such as the hospital sector, CHP plants can play a critical role in replacing fossil-fueled electric generators to supply electricity during local grid outages, thus enhancing hospital facilities’ energy efficiency, while also securing reliability and efficiency of operation. Hospitals have unique ene

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18

Balli, Ozgur, and Haydar Aras. "Energetic Analyses of the Combined Heat and Power (CHP) System." Energy Exploration & Exploitation 25, no. 1 (2007): 39–62. http://dx.doi.org/10.1260/014459807781036412.

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Balli, Ozgur, Haydar Aras, and Arif Hepbasli. "Exergoeconomic analysis of a combined heat and power (CHP) system." International Journal of Energy Research 32, no. 4 (2008): 273–89. http://dx.doi.org/10.1002/er.1353.

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20

Chen, Hung-Cheng, Long-Yi Chang, and Li-Qun Shang. "Transient Stability Improvement for Combined Heat and Power System Using Load Shedding." Mathematical Problems in Engineering 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/131062.

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The purpose of the paper is to analyze and improve the transient stability of an industrial combined heat and power (CHP) system in a high-tech science park in Taiwan. The CHP system installed two 161 kV/161 kV high-impendence transformers to connect with Taipower System (TPS) for both decreasing the short-circuit fault current and increasing the fault critical clearing time. The transient stabilities of three types of operation modes in CHP units, 3G1S, 2G1S, and 1G1S, are analyzed. Under the 3G1S operation mode, the system frequency is immediately restored to 60 Hz after tie line tripping wi

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Razak, Amir A. "Library Structure of Dynamic Simulation for Combined Heat and Power Plant in Modelica Language." Applied Mechanics and Materials 110-116 (October 2011): 4925–31. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.4925.

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The most common form of energy recycling system is Combined Heat and Power (CHP) plants. The CHP plant is a complex system and still under intensive development by many researchers. The system needs to be developed in quick and efficient manners with low resources based on modeling and simulation method. With the development of CHP library in open source Modelica language, it could be used as a base for further advancement of CHP technology. The aim of this work is to design a structure of initial version of a model library for the dynamic simulation of Combined Heat and Power plants (CHP). Mo

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22

O. Alwan, Hayder, and Noor M. Farhan. "Load restoration methodology considering renewable energies and combined heat and power systems." International Journal of Engineering & Technology 7, no. 2.6 (2018): 130. http://dx.doi.org/10.14419/ijet.v7i2.6.10138.

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Outages and faults cause problems in interconnected power system with huge economic consequences in modern societies. In the power system blackouts, black start resources such as micro combined heat and power (CHP) systems and renewable energies, due to their self-start ability, are one of the solutions to restore power system as quickly as possible. In this paper, we propose a model for power system restoration considering CHP systems and renewable energy sources as being available in blackout states. We define a control variable representing a level of balance between the distance and import

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Kazda, Kody, and Xiang Li. "A Critical Review of the Modeling and Optimization of Combined Heat and Power Dispatch." Processes 8, no. 4 (2020): 441. http://dx.doi.org/10.3390/pr8040441.

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Combined heat and power (CHP) systems are attracting increasing attention for their ability to improve the economics and sustainability of the electricity system. Determining how to best operate these systems is difficult because they can consist of many generating units whose operation is governed by complex nonlinear physics. Mathematical programming is a useful tool to support the operation of CHP systems, and has been the subject of substantial research attention since the early 1990s. This paper critically reviews the modeling and optimization work that has been done on the CHP economic d

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He, Liangce, Zhigang Lu, Lili Pan, Hao Zhao, Xueping Li, and Jiangfeng Zhang. "Optimal Economic and Emission Dispatch of a Microgrid with a Combined Heat and Power System." Energies 12, no. 4 (2019): 604. http://dx.doi.org/10.3390/en12040604.

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With the rapid development of the new concept of energy internet, electric power systems often need to be investigated together with thermal energy systems. Additionally, to reduce pollution from gas emissions, it is very important to study the economic and emission dispatch of integrated electrical and heating systems. Hence, this paper proposes a multi-objective optimization dispatch model for a microgrid (MG) with a combined heat and power (CHP) system. This CHP-based MG system consists of a CHP unit, a wind turbine, a PV system, a fuel cell, an electric boiler, an electric storage, and a h

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Luo, Yanhong, Zhenxing Yin, Dongsheng Yang, and Bowen Zhou. "A New Wind Power Accommodation Strategy for Combined Heat and Power System Based on Bi-Directional Conversion." Energies 12, no. 13 (2019): 2458. http://dx.doi.org/10.3390/en12132458.

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The extensive use of wind power can not only reduce dependence on fossil fuels, but also reduce emissions of polluted gases. However, large-scale wind power curtailments often occur in northeast China during the heat supply season, due to the fact that most of electrical demand is covered by the electrical power of the combined heat and power (CHP) during the off-peak hours. At present, for northeast China with heating demand, most of the research only focuses on how to accommodate more wind power on the spot by using one-directional conversion of the electric and thermal energy. But it is sti

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Bolonina, Alona, Genadijs Bolonins, and Dagnija Blumberga. "Analysis of the Impact of Decreasing District Heating Supply Temperature on Combined Heat and Power Plant Operation." Environmental and Climate Technologies 14, no. 1 (2014): 41–46. http://dx.doi.org/10.1515/rtuect-2014-0013.

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Abstract District heating systems are widely used to supply heat to different groups of heat consumers. The district heating system offers great opportunities for combined heat and power production. In this paper decreasing district heating supply temperature is analysed in the context of combined heat and power plant operation. A mathematical model of a CHP plant is developed using both empirical and theoretical equations. The model is used for analysis of modified CHP plant operation modes with reduced district heating supply temperature. Conclusions on the benefits of new operation modes ar

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Lyu, Quan, Haoyan Gong, Nan Yang, Xiandong Xu, Na Zhang, and Haixia Wang. "An Evaluation Method of Wind Power Integration in Power Systems with Flexible Combined Heat and Power Plant." Energies 12, no. 21 (2019): 4129. http://dx.doi.org/10.3390/en12214129.

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During the heating period in Northeast China, the electricity generated by Combined Heat and Power (CHP) plants has caused a large amount of wind power curtailment. To avoid this curtailment, Heat Storages (HS) and Electric Boilers (EB) are being widely applied to CHP plants. However, the effectiveness of HS and EB on the curtailment of wind power has still not been well evaluated. This paper proposes a new evaluation method consisting of an operation boundary model and an internal coordinated operation model for each flexible CHP plant with HS and EB. Then a system power balance model based o

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Strušnik, Dušan, and Marko Agrež. "METHOD OF THE BEST AVAILABLE TECHNOLOGY AND LOW CARBON FUTURE OF A COMBINED HEAT AND POWER PLANT." Journal of Energy Technology 15, no. 1 (2023): 11–22. https://doi.org/10.18690/jet.15.1.11-22.2022.

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The low-carbon development strategy and ecological awareness of a combined heat and power (CHP) plant is the key factor that enables further development of such systems. CHP plants are subject to rigid European ecological guidelines, which dictate the pace of development of global thermal power engineering. For this purpose, the European Union issued a special Directive for the promotion of heat and power cogeneration, and is established with the best available technology (BAT) method. Even though the production of electricity using carbon-free technologies is on the rise, the production of el

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Simbolon, Luga Martin, and Yudi Prana Hikmat. "Comparison of Utilization an Absorption and Vapour Compression Chiller in Sub-Tropical Country Building – A Feasibility Study." Current Journal: International Journal Applied Technology Research 1, no. 1 (2020): 23–37. http://dx.doi.org/10.35313/ijatr.v1i1.21.

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The present study investigate the feasibility of absorption chiller utilization as part of trigeneration system that possibly applied in sub-tropical country building. Trigeneration is refer to the heat utilisation from electric generator (combined heat and power, CHP) to generate absorption chiller in order to produce chilled water for air conditioning system (combined cooling, heat and power, CCHP). Compare to the vapour compression system, absorption chiller that is mainly generated by heat waste, promised benefit economically and environmentally. Overall efficiency of CCHP can reach 71 % a

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Hughes, R. A., B. Ramsay, and C. Rossini. "A Knowledge-Based Decision Support System for Combined Heat and Power Investment Appraisal and Plant Selection." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 210, no. 1 (1996): 15–24. http://dx.doi.org/10.1243/pime_proc_1996_210_004_02.

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Combined heat and power (CHP) can, in the most suitable cases, reduce a consumer's total energy costs by up to 40 per cent. It is important to stress that CHP is not viable at all sites and further that poor choice of CHP plant often results in inefficient and uneconomic operation. It is therefore vitally important to build a clear picture of what specific factors determine the profitability of a CHP scheme. The development of an accurate, reliable economic model is necessary for any sector where a potential market for CHP exists. Conventional economic models have a number of limitations, part

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Yang, Jun, Linjun Zeng, Kangjie He, Yongguo Gong, Zhenhua Zhang, and Kun Chen. "Optimization of the Joint Operation of an Electricity–Heat–Hydrogen–Gas Multi-Energy System Containing Hybrid Energy Storage and Power-to-Gas–Combined Heat and Power." Energies 17, no. 13 (2024): 3144. http://dx.doi.org/10.3390/en17133144.

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With the continuous development of hydrogen storage systems, power-to-gas (P2G) and combined heat and power (CHP), the coupling between electricity–heat–hydrogen–gas has been promoted and energy conversion equipment has been transformed from an independent operation with low energy utilization efficiency to a joint operation with high efficiency. This study proposes a low-carbon optimization strategy for a multi-energy coupled IES containing hydrogen energy storage operating jointly with a two-stage P2G adjustable thermoelectric ratio CHP. Firstly, the hydrogen energy storage system is analyze

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Huang, Yuehua, Qing Chen, Zihao Zhang, Xingtao Liu, Jintong Tu, and Lei Zhang. "Optimal Scheduling of Combined Electric and Heating Considering the Control Process of CHP Unit and Electric Boiler." Processes 11, no. 3 (2023): 753. http://dx.doi.org/10.3390/pr11030753.

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In order to solve the problem of new energy consumption, a combined electric and heating system (CEHS) dynamic optimal scheduling method considering the optimal control of combined heat and power (CHP) unit and electric boiler is proposed from the perspective of unit technology transformation, to optimize the thermoelectric coupling relationship and improve the regulation capacity of the CEHS. Firstly, the electric and heat output models of CHP units considering the optimal control process, were constructed and used to analyze the electric–thermal characteristics and the impact of unit pressur

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Gunes, M. Burak, and Michael W. Ellis. "Evaluation of Energy, Environmental, and Economic Characteristics of Fuel Cell Combined Heat and Power Systems for Residential Applications." Journal of Energy Resources Technology 125, no. 3 (2003): 208–20. http://dx.doi.org/10.1115/1.1595112.

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Residential combined heat and power (CHP) systems using fuel cell technology can provide both electricity and heat and can substantially reduce the energy and environmental impact associated with residential applications. The energy, environmental, and economic characteristics of fuel cell CHP systems are investigated for single-family residential applications. Hourly energy use profiles for electricity and thermal energy are determined for typical residential applications. A mathematical model of a residential fuel cell based CHP system is developed. The CHP system incorporates a fuel cell sy

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Kang, Ying Wei, Wei Huang, Yang Xue, Guang Yi Cao, and Heng Yong Tu. "Dynamic Simulation of a Solid Oxide Fuel Cell System for Micro Combined Heat and Power Application." Applied Mechanics and Materials 336-338 (July 2013): 695–99. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.695.

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In the past decade, developing solid oxide fuel cell (SOFC) systems for micro combined heat and power applications (micro-CHP, 1-10 kWe) is one of the hot spots in the world energy field. To meet the requirements for system optimization and control design of SOFC micro-CHP systems, in this paper a dynamic model of an SOFC micro-CHP system is developed, based on which dynamic simulations are also carried out. Simulation results show that the present model can reflect the behavior of the SOFC micro-CHP system quite well; the influence of one component on another is an important factor to determi

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Puspitarini, Handriyanti Diah, Baptiste François, Marco Baratieri, Casey Brown, Mattia Zaramella, and Marco Borga. "Complementarity between Combined Heat and Power Systems, Solar PV and Hydropower at a District Level: Sensitivity to Climate Characteristics along an Alpine Transect." Energies 13, no. 16 (2020): 4156. http://dx.doi.org/10.3390/en13164156.

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Combined heat and power systems (CHP) produce heat and electricity simultaneously. Their resulting high efficiency makes them more attractive from the energy managers’ perspective than other conventional thermal systems. Although heat is a by-product of the electricity generation process, system operators usually operate CHP systems to satisfy heat demand. Electricity generation from CHP is thus driven by the heat demand, which follows the variability of seasonal temperature, and thus is not always correlated with the fluctuation of electricity demand. Consequently, from the perspective of the

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Shehzad, Muhammad Faisal, Mainak Dan, Valerio Mariani, et al. "A Heuristic Algorithm for Combined Heat and Power System Operation Management." Energies 14, no. 6 (2021): 1588. http://dx.doi.org/10.3390/en14061588.

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This paper presents a computationally efficient novel heuristic approach for solving the combined heat and power economic dispatch (CHP-ED) problem in residential buildings considering component interconnections. The proposed solution is meant as a substitute for the cutting-edge approaches, such as model predictive control, where the problem is a mixed-integer nonlinear program (MINLP), known to be computationally-intensive, and therefore requiring specialized hardware and sophisticated solvers, not suited for residential use. The proposed heuristic algorithm targets simple embedded hardware

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Agrawal, Ram Kumar, and Kamal Kishore Khatri. "Comparison of Technological Options for Distributed Generation-Combined Heat and Power in Rajasthan State of India." Journal of Energy 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/712319.

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Distributed generation (DG) of electricity is expected to become more important in the future electricity generation system. This paper reviews the different technological options available for DG. DG offers a number of potential benefits. The ability to use the waste heat from fuel-operated DG, known as combined heat and power (CHP), offers both reduced costs and significant reductions of CO2emissions. The overall efficiency of DG-CHP system can approach 90 percent, a significant improvement over the 30 to 35 percent electric grid efficiency and 50 to 90 percent industrial boiler efficiency w

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Jin, Xiao Long, Hai Feng Li, Tao Jin, Xian Dong Xu, Ming Shen Wang, and Jian Meng. "Economical and Coordinated Dispatch of CHP Based Microgrid with Renewable Energy Resources." Advanced Materials Research 960-961 (June 2014): 1022–28. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.1022.

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The advantages of high energy efficiency and economic benefit promote the wide application of combined heat and power system (CHP) based microgrid. Firstly, a mathematical model of the CHP based microgrid is developed. Then, a cost function for the coordination of heat and electric load is proposed. Finally, an optimal dispatch model is developed to achieve the economical and coordinated operation of the CHP based microgrid system. Simulation results verify effectiveness of the proposed dispatch model, which is a powerful tool for the energy management of CHP based microgrid with renewable ene

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Zheng, Peijun, Peng Liu, and Yeqi Zhang. "Economic Assessment and Control Strategy of Combined Heat and Power Employed in Centralized Domestic Hot Water Systems." Applied Sciences 11, no. 10 (2021): 4326. http://dx.doi.org/10.3390/app11104326.

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With the increasing application of CHP and an industry transition to distributed energy, it is necessary to make a comprehensive economic analysis and comparison of the entire lifetime of CHP from the net present value (NPV), payback period, and cost-saving ratio (CSR). Five systems, including micro-CHP, gas boiler (GB), air-source heat pump (ASHP), domestic gas-fired heater and domestic electric hot water-heater, are simulated. First, this paper takes annual heat use efficiency (AHUE) into account to compare the economy of each domestic hot water (DHW) system. The results show that a domestic

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Zhu, Lingkai, Chengkun Lin, Congyu Wang, and Jiwei Song. "Optimal Dispatch of Multi-Type CHP Units Integrated with Flexibility Renovations for Renewable Energy Accommodation." Energies 15, no. 19 (2022): 7166. http://dx.doi.org/10.3390/en15197166.

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Driven by the goals of carbon neutral and carbon peak, coal power units need increased flexibility in peak shaving to accommodate intermittent renewables, especially for a region with a large proportion of combined heat and power (CHP) units in China. In this study, the data-mining-based method is proposed for revealing and utilizing the heat–power coupling mechanism of CHP units, which can be used to solve the mentioned issues. Specifically, extraction-condensing (EC) units, high-back-pressure (HBP) units and low-pressure turbine zero power output (LZPO) units are introduced into the proposed

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Kelly, N. J., J. A. Clarke, A. Ferguson, and G. Burt. "Developing and testing a generic micro-combined heat and power model for simulations of dwellings and highly distributed power systems." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 222, no. 7 (2008): 685–95. http://dx.doi.org/10.1243/09576509jpe532.

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This paper elaborates an approach to the modelling of domestic micro-combined heat and power (μ-CHP) using a building simulation tool that can provide a detailed picture of the environmental performance of both the μ-CHP heating system and the dwelling it serves. The approach can also provide useful data for the modelling of highly distributed power systems (HDPS). At the commencement of the work described in this paper no μ-CHP device model that was compatible with a building simulation tool was available. The development of such a model is described along with its calibration and verificatio

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Papadimitriou, Aikaterini, Vassilios Vassiliou, Kalliopi Tataraki, Eugenia Giannini, and Zacharias Maroulis. "Economic Assessment of Cogeneration Systems in Operation." Energies 13, no. 9 (2020): 2206. http://dx.doi.org/10.3390/en13092206.

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A systematic method to evaluate the economic operating performance of existing combined heat and power (CHP) or combined cooling heat and power (CCHP) generation systems is applied. Two key performance indicators are selected to evaluate both the technical and the economic performance, based on operating recording data; the capacity factor and the capital recovery. The case study for eight projects in Athens is presented with the purpose to reveal the current situation of CHP in Greece and identify reasons that are hindering its penetration. Interesting conclusions were reached from the analys

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Pan, Weiwei, Kan Yang, Yunlei Zhang, et al. "Optimal dispatch of a thermal-electric virtual power plant considering heat storage tanks." IOP Conference Series: Earth and Environmental Science 983, no. 1 (2022): 012026. http://dx.doi.org/10.1088/1755-1315/983/1/012026.

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Abstract Characteristic of thermoelectric coupling of Combined heat and power (CHP) units reduces the flexibility of power generation and heat generation in the “Three-North” region of China. Meanwhile, the uncertainty of renewable energy generation (REG) and demand side management (DSM) pose challenges to the optimal operation of the whole system, leading to difficulty in improving the economic benefits of the whole system. In order to mitigate the above problems, wind generators, solar generators, CHP units, conventional generating units, interruptible loads, battery energy storage systems (

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Nisar, Shahim. "Application of Thermal Energy Storage to a Combined Heat and Power Plant." International Journal for Research in Applied Science and Engineering Technology 9, no. 9 (2021): 1304–12. http://dx.doi.org/10.22214/ijraset.2021.38181.

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Abstract: The present study deals with the economic and environmental benefits that can be attained through the coupling of borehole thermal energy storage (BTES) and combined heat and power (CHP). Energy prices are significantly higher during the winter months due to the limited supply of natural gas. This dearth not onlyincreases operating costs but also emissions, due to the need to burn ultra-low sulfur diesel (ULSD). The scope of this paper is to present a TRNSYS model of a BTES system that is designed using actual operational data from the campus CHP plant.

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Ling, Wen Choong, Viknesh Andiappan, and Yoke Kin Wan. "Design of Biomass Combined Heat and Power (CHP) Systems based on Economic Risk using Minimax Regret Criterion." MATEC Web of Conferences 152 (2018): 01006. http://dx.doi.org/10.1051/matecconf/201815201006.

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It is a great challenge to identify optimum technologies for CHP systems that utilise biomass and convert it into heat and power. In this respect, industry decision makers are lacking in confidence to invest in biomass CHP due to economic risk from varying energy demand. This research work presents a linear programming systematic framework to design biomass CHP system based on potential loss of profit due to varying energy demand. Minimax Regret Criterion (MRC) approach was used to assess maximum regret between selections of the given biomass CHP design based on energy demand. Based on this, t

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Thomson, M., and D. Infield. "Modelling the impact of micro-combined heat and power generators on electricity distribution networks." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 222, no. 7 (2008): 697–706. http://dx.doi.org/10.1243/09576509jpe574.

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This paper investigates potential technical effects that a high take up of domestic micro-CHP could have on an electricity distribution system. This study is based on a combination of house-by-house energy use modelling and network power-flow analysis. A variety of micro-CHP technologies are represented, including Stirling engines, internal combustion engines, and fuel cells. These have different heat-to-power ratios and thus different impacts on the electricity system. The results and discussion focus on voltage rise, which is considered to be the primary constraint on allowable penetration.

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Xie, Dong Lai, and Bing Qi Wang. "Development and Test of a Fuel Cell Based Micro-CHP System." Advanced Materials Research 1092-1093 (March 2015): 175–80. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.175.

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Fuel cell based micro combined heat and power (micro-CHP) systems are residential scale clean energy conversion unit. It employs fuel cells in a compact system that converts natural gas, propane or other fuels into both electricity and heat, which increases efficiency by simultaneously generating power and heat for one unit, on-site within a home. A prototype system consisting of a natural gas steam reforming unit, CO cleaning unit, PEM fuel cell stack, waste heat recovery unit and auxiliary unit is integrated. Test results of the prototype show that it can start within an hour and the syngas

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Smołka, Krystian, Piotr Wiśniewski, Mirosław Majkut, and Sławomir Dykas. "Operational and economic analysis of a Velox-type combined heat & power plant with a throttle valve." MATEC Web of Conferences 345 (2021): 00028. http://dx.doi.org/10.1051/matecconf/202134500028.

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For many years, the Department of Power Engineering and Turbomachinery of the Silesian University of Technology has been using a small-capacity (about 500 kWe) steam-gas power plant. Based on many years of experience in operation of this power plant utilizing the Velox-type gas-steam system, an idea arose to modify this type of thermal power cycle to create a combined heat and power (CHP) plant of small capacity, dedicated for distributed heat and power production or production process steam with high temperature. Previous thermodynamic and economic analysis of that type of low-power CHP plant

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Matysko, Robert, Jarosław Mikielewicz, and Eugeniusz Ihnatowicz. "Changes of the thermodynamic parameters in failure conditions of the micro-CHP cycle." Archives of Thermodynamics 35, no. 1 (2014): 43–59. http://dx.doi.org/10.2478/aoter-2014-0003.

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Abstract The paper presents the calculations for the failure conditions of the ORC (organic Rankine cycle) cycle in the electrical power system. It analyses the possible reasons of breakdown, such as the electrical power loss or the automatic safety valve failure. The micro-CHP (combined heat and power) system should have maintenance-free configuration, which means that the user does not have to be acquainted with all the details of the ORC system operation. However, the system should always be equipped with the safety control systems allowing for the immediate turn off of the ORC cycle in cas

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Amirabedin, Ehsan, Mirparham Pooyanfar, Murad A. Rahim, and Hüseyin Topal. "Techno-Environmental Assessment Of Co-Gasification Of Low-Grade Turkish Lignite With Biomass In A Trigeneration Power Plant." Environmental and Climate Technologies 13, no. 1 (2014): 5–11. http://dx.doi.org/10.2478/rtuect-2014-0001.

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Abstract Trigeneration or Combined Cooling, Heat and Power (CCHP) which is based upon combined heat and power (CHP) systems coupled to an absorption chiller can be recognized as one of the best technologies recovering biomass effectively to heat, cooling and power. Co-gasification of the lignite and biomass can provide the possibility for safe and effective disposal of different waste types as well as for sustainable and environmentally-friendly production of energy. In this article, a trigeneration system based on an IC engine and gasifier reactor has been simulated and realized using Thermof

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