摘要
构建了热源塔热泵辅助加热太阳能热水系统。对该系统在长沙地区进行了测试,分析了系统三种典型工况的运行特性,对系统在试验期间的热水温度、太阳能保证率、热源塔热泵贡献率、集热器集热效率进行分析计算。应用TRNSYS,对系统在长沙地区各月和全年性能进行模拟分析,计算得出逐月和全年性能参数。研究表明试验测试期间太阳能保证率为46.69%;在7、8、9月份太阳能保证率皆超过57%,同时集热器集热效率最高,皆达到33%以上;系统全年集热效率为29.13%,全年太阳能保证率为33.99%,全年热源塔热泵贡献率为66.01%。
A solar hot water system assisted by heat source tower heat pump was built. Thermal property of the system in Changsha were measured,operation characteristics of its three cases were analysed,and hot water temperature、solar fraction、contribution rate of heat source tower heat pump、collector efficiency of the collectors during the test were calculated. Based TRNSYS performance of every month and whole year were simulated and analysed,and the performance parameters were ealculated. Calculations show that solar fraction is 46. 69% during the testing period; solar fraction exceeds 57% and collector efficiency of the collectors is maximum throughout the year which exceeds 33% in July、August and September; the annual collector efficiency of the collectors is 29. 13%,annual solar fraction is 33. 99%,while annual contribution rate of heat source tower heat pump is 66. 01%.
出处
《科学技术与工程》
北大核心
2016年第33期204-209,共6页
Science Technology and Engineering
基金
国家重点研发计划(2016YFC0700305)资助
关键词
太阳能
热水系统
热源塔热泵
TRNSYS
solar energy
hot water system
heat source tower heat pump
TRNSYS
