多源分布式换能系统构建理论方法研究与应用  

Research and application of construction theory method of multi-energy distributed energy conversion system

作　　者：孙健[1] 吴可欣 王寅武 郝俊红[1] 戈志华[1] 杨勇平[1] Sun Jian;Wu Kexin;Wang Yinwu;Hao Junhong;Ge Zhihua;Yang Yongping(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing)

机构地区：[1]华北电力大学新能源电力国家重点实验室,北京

出　　处：《暖通空调》2024年第5期72-79,共8页Heating Ventilating & Air Conditioning

基　　金：国家重点研发计划项目(编号:2019YFE0104900);国家自然科学基金重大项目(编号:52090062);中央高校基本科研业务费专项资金资助项目(编号:22020MS009)。

摘　　要：“双碳”背景下分布式换能系统以其在低碳环保方面的显著优势逐渐在集中供热领域得到应用。本文针对分布式换能系统中热泵、太阳能集热器、板式换热器和燃料电池等关键单元提出了单元能耗评价方法,并通过EES软件对各单元进行了热力学建模以定量评价不同单元在不同工况下的经济性,进而提出分布式换能系统的构建方法以获得流程经济性最优化。以此为依据搭建了最优化流程,并以北京地区某小区为例分析了该系统的供暖季性能,最后进行了经济性和碳减排分析。结果表明:室外温度在-10~5℃范围内变化时,该新型分布式换能系统的COP为2.69~4.43,太阳能集热器效率为45.19%~61.87%,燃料电池日发电量为8047.4~32228.0 kW·h;与常规热力站相比,该新型分布式换能系统的运行成本节省率为32.66%~53.92%,碳减排率为69.07%~73.29%。Under the dual-carbon background,the distributed energy conversion system has been gradually applied in the field of central heating because of its significant advantages in low carbon and environmental protection.This paper puts forward the unit energy consumption evaluation method for the key units in the distributed energy conversion system,such as heat pump,solar collector,plate heat exchanger and fuel cell,and carries on the thermodynamic modeling of each unit through EES software to quantitatively evaluate the economy of different units under different working conditions,and then puts forward the construction method of distributed energy conversion system to obtain the process economy optimization.On this basis,the optimization process is built.Taking a residential area in Beijing as an example,the heating season performance of the system is analysed.Finally the economy and carbon emission reduction analysis are carried out.The results show that when the outdoor temperature changes in the range of -10℃ to 5℃,the COP of the new distributed energy conversion system is 2.69 to 4.43,the efficiency of the solar collector is 45.19% to 61.87%,and the daily power generation of fuel cell is 8047.4 kWh to 32228.0 kWh.Compared with conventional thermal power stations,the operating cost saving rate of the new distributed energy conversion system is 32.66% to 53.92%,and the carbon emission reduction rate is 69.07%to 73.29%.

关 键 词：分布式换能系统 构建方法 经济性 碳减排 供热 热泵 太阳能集热器 燃料电池 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]