燃气热泵系统在过渡季节制备生活热水的性能研究  

Performance of Gas Engine-Driven Heat Pump System for Supplying Domestic Hot Water in Transitional Seasons

作　　者：胡亚飞[1,2,3,4] 冯自平 宋文吉[1,3,4] HU Ya-fei;FENG Zi-ping;SONG Wen-ji(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;University of Chinese Academy of Sciences,Beijing 100049,China;CAS Key Laboratory of Renewable Energy,Guangzhou 510640,China;Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,China)

机构地区：[1]中国科学院广州能源研究所,广州510640 [2]中国科学院大学,北京100049 [3]中国科学院可再生能源重点实验室,广州510640 [4]广东省新能源和可再生能源研究开发与应用重点实验室,广州510640

出　　处：《新能源进展》2023年第1期14-20,共7页Advances in New and Renewable Energy

基　　金：国家重点研发计划项目(2021YFE0112500)。

摘　　要：研究了燃气热泵(GHP)系统在过渡季节制备生活热水的性能特性,分析了发动机余热回收对GHP系统性能的影响。在不同环境温度(15~24℃)和进水温度(37.7~47.8℃)下,考察回收与不回收发动机余热模式对生活热水制热量(Q_(h))、耗气功率(P_(gas))及一次能源利用率(r_(PER))的影响规律。结果表明,随着环境温度的升高,P_(gas)减小,而Q_(h)和r_(PER)呈现递增的趋势;随着进水温度的升高,P_(gas)增大,而Q_(h)和r_(PER)呈现递减的趋势。其中环境温度20~24℃与进水温度37.7~47.8℃为Q_(h)的不敏感区间,在环境温度为24℃和进水温度为37.7℃条件下,r_(PER)高达2.004。GHP系统的余热回收量分别占总制热量和发动机总余热的25.00%~30.16%和62.17%~71.56%,系统的余热利用率高。In this study,the performance characteristics of gas engine-driven heat pump(GHP)system for supplying domestic hot water in transitional seasons were investigated.The influence of the recovered engine waste heat on the GHP system was analyzed.The changes of the heating capacity of domestic hot water(Q_(h)),gas consumption power(P_(gas)),and primary energy ratio(r_(PER))in two operating modes of recovery and non-recovery of engine waste heat were studied under the conditions of different ambient air temperatures(15-24℃)and water inlet temperatures(37.7-47.8℃).The results illustrated that with the increase of ambient air temperature,P_(gas)decreased while Q_(h)and r_(PER)increased.However,as the water inlet temperature increased,P_(gas)increased while Q_(h)and r_(PER)decreased.The ranges of 20-24℃ in ambient air temperature and 37.7-47.8℃ in water inlet temperature were the insensitive temperature ranges to Q_(h).The r_(PER)of the GHP system was as high as 2.004 under the conditions of the ambient air temperature of 24℃ and the water inlet temperature of 37.7℃,respectively.In this GHP system,the recovered waste heat accounted for 25.00%-30.16%of Q_(h)and 62.17%-71.56%of the total engine waste heat.The waste heat utilization rate of the GHP system was high.

关 键 词：燃气热泵 生活热水 余热回收 一次能源利用率 分布式能源 

分 类 号：TK11[动力工程及工程热物理—热能工程]