低温供热系统的用能分析  

Energy-Use Analysis of Low Temperature Heating Systems

作　　者：赵加宁[1] 周浩[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《天津大学学报（自然科学与工程技术版）》2014年第1期29-35,共7页Journal of Tianjin University：Science and Technology

基　　金：'十一五'国家科技支撑计划资助项目(2006BAJ01A04)

摘　　要：针对热泵装置用能效率的计算方法进行了探讨,分析了热泵提升式系统用能效率的两种计算方法.以热能效率和效率作为评价指标,对热泵提升式系统和锅炉提升式系统这两种低温供热系统的用能情况进行了能量分析与分析.计算结果表明,热泵提升式系统的热能效率要低于锅炉提升式系统的热能效率,但其效率要高于后者的效率;当低温热源的供水温度较高可直接用于供暖时,应将低温热源的热量或作为'代价'计入供给能或供给来计算热泵装置的用能效率.The calculation methods of heat pump energy-use efficiency are discussed and two energy efficiency calculation methods of the heat pump upgrading system are analyzed. With heat-energy efficiency and exergy efficiency as evaluation indexes, energy analysis and exergy analysis are conducted on the energy using-process of two low temperature heating systems which are the heat pump upgrading system and boiler upgrading system. The calculation re- sults show that the heat-energy efficiency of heat pump upgrading system is lower than that of boiler upgrading system, while the exergy efficiency of the former is higher than that of the latter. When the water supply temperature of low temperature heat source is high enough for it to be used directly for heating, its heat energy or exergy should be included in supply energy or supply exergy as a cost to calculate the energy-use efficiency of heat pump upgrading system.

关 键 词：热泵提升式系统 锅炉提升式系统 热能效率 [火用]效率 热泵用能效率 

分 类 号：TU833[建筑科学—供热、供燃气、通风及空调工程]