能源总线系统热源分析对比  

Analysis and Comparison of Heat Source for Energy Bus System

作　　者：刘魁星 张家熔 王培培 龙惟定[4] LIU Kui-xing;ZHANG Jia-rong;WANG Pei-pei;LONG Wei-ding(School of Architecture,Tianjin University,Tianjin 300072,China;Civil Engineering College,Liaoning Technical University,Fuxin 123000,Liaoning,China;Shanghai Tongji Urban Planning and Design Institute,Shanghai 200092,China;Tongji University,Shanghai 200092,China)

机构地区：[1]天津大学建筑学院,天津300072 [2]辽宁工程技术大学土木工程学院,辽宁阜新123000 [3]上海同济城市规划设计研究院,上海200092 [4]同济大学,上海200092

出　　处：《建筑节能》2018年第6期12-16,共5页BUILDING ENERGY EFFICIENCY

基　　金：国家自然科学基金青年基金资助项目(51708400);天津市自然科学青年基金资助项目(17JCQNJC07400)

摘　　要：能源总线系统是一种集成化规模化应用区域内的可再生能源及未利用能源的低碳区域能源系统。从热力学第一定律和热力学第二定律两方面入手,分析能源总线系统选用燃气锅炉和空气源热泵等不同种类的热源时,提出四种方案。系统的热力性能与常规系统热力性能的对比,根据系统性能系数COP_(sys)、一次能源利用系数PER与火用效率ε_(ex)等指标,为合理选择能源总线系统热源种类提供理论支撑。The Energy Bus System（ EBS） is a low-carbon regional energy system that integrates the renewable energy and the unutilized energy in a large-scale application area. The heat source of Energy Bus System preferred low-grade energy,renewable energy,heat recovery of energy,to satisfy the system requirements to lower the high-grade energy applications. When the number of preferred heat sources in EBS is not enough to satisfy the needs of users in the system sometimes,a small amount of high-grade energy sources such as gas boiler and air source heat pump will be added. The selection of auxiliary heat sources must meet the system performance requirements. A comprehensive analysis of the thermal performance of the system is necessary after the auxiliary heat source added. Starting from the first law of thermodynamics and the second law of thermodynamics,considering the difference between various energy sources and quantities,when the energy bus system selects different kinds of heat sources such as gas boiler and air source heat pump,it is proposed that four programs are the gas boiler used as energy source in winter bus system to add heating,gas boiler direct heating,the air-water source heat pump to add the most energy bus system heat source and air source heat pump direct heating. According to the system performance coefficient COP_（sys）,primary energy utilization coefficient PER,exergy efficiency ε_（ex）and other indicators,it provides theoretical support for the reasonable selection of heat source types of Energy Bus System. The results show that heat supply exergy efficiency ε_（ex）of the four schemes are less than the primary energy utilization coefficient PER by comparing the heat supply exergy efficiency with the primary energy utilization coefficient PER. Among them,the program II is lower than the other three programs by a primary energy utilization coefficient PER or heat supply exergy efficiency ε_（ex）relatively,we can see that the second scheme that the boiler as a direct heating source

关 键 词：能源总线系统 系统性能系数 一次能源利用系数 火用效率 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]