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Dynamic Simulation and Performance Analysis on Multi-Energy Coupled CCHP System

Energy Engineering 2022年第2期119卷 723-737页

作者： Xueqin Tian Jinfei Sun Tong Xu Mengran Cui Xinlei Wang Jianxiang Guo De-gejirifu Na Wang State Grid Economic and Technological Research Institute Co. Ltd.Beijing102209China Qingdao University of Technology Qingdao266033China

Although the Combined Cooing,Heating and Power System(hereinafter referred to as“CCHP”)improves the capacity utilization rate and energy utilization efficiency,single use of CCHP system cannot realize dynamic matching between supply and demand loads due to the unbalance features of the user’s cooling and heating loads.On the basis of user convenience and wide applicability of clean air energy,this paper tries to put forward a coupled CCHP system with combustion gas turbine and ASHP ordered power by heat,analyze trends of such parameters as gas consumption and power consumption of heat pump in line with adjustment of heating load proportion of combustion gas turbine,and optimize the system ratio in the method of annual costs and energy environmental benefit assessment.Based on the analysis of the hourly simulation and matching characteristics of the cold and hot load of the 100 thousand square meter building,it is found that the annual cost of the air source heat pump is low,but the energy and environmental benefits are poor.It will lead to 6.35%shortage of cooling load in summer.Combined with the evaluation method of primary energy consumption and zero carbon dioxide emission,the coupling system of CHHP and air source heat pump with 41%gas turbine load ratio is the best configuration.This system structure and optimization method can provide some reference for the development of CCHP coupling system.

关键词： CCHP(Combined cooling,Heating and Power System) ASHP(Air Source Heat Pump) annual costs absorption cooling transient simulation

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