摘要
针对太阳能难以单独稳定供暖和空气源热泵供暖成本高的问题,提出空气源热泵辅助太阳能稳定供暖构想,在甘肃省兰州市七里河区魏岭乡绿化村研发搭建大平板太阳能集热器-空气源热泵系统,对比研究晴天、多云和阴天3种典型工况下大平板太阳能集热器的集热效率、太阳能热泵和空气源热泵COP、太阳能保证率、系统总供热量和系统能效比等性能参数。结果表明:晴天、多云和阴天系统集热效率分别为44.9%、38.7%和20.6%,3种工况下太阳能热泵COP均为4.0,空气源热泵COP分别为3.5、3.3和3.1,太阳能保证率分别为38.1%、32.3%和12.9%,系统全天供热量分别为142.52、135.22和120.96 kWh,系统能效比分别为3.5、3.4和2.7。研究结果证明大平板太阳能集热器-空气源热泵系统用于寒冷地区单体建筑供暖的可行性,可为寒冷地区农村单体建筑的供暖提供一种新途径。
In view of the problem that solar energy is difficult to stabilize heating alone and the high cost of air source heat pump heating,the idea of air source heat pump assisted solar stable heating is proposed.A large flat plate solar collector-air source heat pump system is developed and bulit in Green Village,Weiling Town,Qilihe District,Lanzhou City,Gansu Province.The performance parameters of efficiency of large flat plate solar collector,COP of solar heat pump and air source heat pump,solar fraction,total heating capacity and system energy efficiency ratio are compared and studied under three typical working conditions of sunny,cloudy and overcast days.The results show that the efficiency of the system in sunny,cloudy and overcast days is 44.9%,38.7%and 20.6%respectively.The COP of solar heat pump under three working conditions is 4.0,and that of air source heat pump is 3.5,3.3 and 3.1 respectively.The solar fraction is 38.1%,32.3%and 12.9%respectively.The whole day heating capacity of the system is 142.52,135.22 and 120.96 kWh respectively.The system energy efficiency ratio is 3.5,3.4 and 2.7 respectively.The research results prove the feasibility of large flat plate solar collector-air source heat pump system and provide a new way for rural single building heating in cold area.
作者
李金平
李彩军
李天澍
董玉慧
代静波
Vojislav Novakovic
Li Jinping;Li Caijun;Li Tianshu;Dong Yuhui;Dai Jingbo;Vojislav Novakovic(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Key Laboratory of Complementary Energy System of Biomass and Solar Energy Gansu Province,Lanzhou 730050,China;China Northwest Collaborative Innovation Center of Low-carbon Unbanization Techonlogies,Lanzhou 730050,China;Department of Energy and Process Engineering,Norwegian University of Science and Technology,Trondheim NO-7491,Norway)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2023年第5期246-256,共11页
Acta Energiae Solaris Sinica
基金
国家重点研发计划(2019YFE0104900)
甘肃省高等学校产业支撑项目(2021CYZC-33)
兰州市人才创新创业项目(2017-RC-34
2020-RC-126)。
关键词
太阳能集热器
空气源热泵
性能系数
太阳能保证率
系统能效比
solar collector
air source heat pumps
coefficient of performance
solar fraction
system energy efficiency ratio
