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Operation Strategy and Matching of Supply and Demand of CCHP System with Various Building Types

Journal of Thermal Science 2024年第6期33卷 2203-2220页

作者： LI Yaohong WANG Pengxiang PENG Bin BIAN Xiaoyang School of Mechanical and Electrical Engineering Lanzhou University of Technology

The important indications for assessing CCHP(combined cooling,heating and power) systems are their supply-demand matching characteristics between the user demand side and the energy supply *** characteristics are primarily influenced by different building types and operating *** view of the energy redundancy of the following electric load(FEL) and following thermal load(FTL) operation strategies and the energy deficiency of the following hybrid electric-heating load(FHL) operation strategy,this paper proposes an improved following balanced heat-electrical load(IFBL) operation strategy based on the following balanced heat-electrical load(FBL) operation *** on the energy utilization rate as the objective function,this paper optimizes the installed capacity of CCHP systems in different buildings and proposes an energy factor for evaluating the supply-demand matching characteristics of the *** results show that the energy utilization rate and energy factor of the system under IFBL are optimal relative to the other operation ***,the hotel building has the highest energy utilization rate and the lowest energy factor;on the contrary,the office building has the lowest energy utilization rate and the highest energy ***,the analysis of supply-demand matching for different building types under multiple operating strategies shows that the hospital and hotel systems exhibit optimal supply-demand matching performance under the IFBL strategy,with values of0.945 and 0.938,respectively;on the contrary,the office system has an optimal supply-demand matching of 0.935under the FEL *** the FTL strategy,the systems of all three buildings exhibit poor matching performance.

关键词： combined cooling energy factor energy utilization rate heating and power system (CCHP) matching supply and demand operation strategy

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