摘要
为了提高大温差工况下空气源热泵系统的性能,本文提出一种三重回路空气源热泵系统的方案,并以回收建筑空调排风能量为基础,搭建了三重回路系统性能测试平台,实验测试了单回路与三重回路热泵系统在冬、夏季不同室外温度工况下的性能。结果表明:无论冬、夏季工况,三重回路系统在各工况下的整体性能均明显高于单回路系统,且随室内外温差的增大,三重回路系统可明显改善传统空气源热泵存在的压比过大、系统性能急剧降低等问题。冬季工况下,三重回路系统COP增长率可达1.88,室内外温差为40℃时,三重回路比单回路COP提高54.8%;夏季工况下,三重回路COP增长率可达89.8%,室内外温差为13℃时,三重回路比单回路COP提高74.6%。
To improve the performance of an air-source heat pump system under large temperature difference conditions, this paper proposed a triple-loop air-source heat pump system scheme. An energy recovery performance test platform was set up according to the exhaust energy recovery in a public building air-conditioning system. The performances of the single-and triple-loop heat pump systems were tested through experiments under different outdoor-temperature conditions in winter and summer. The results show that the overall performance of the triple-loop system was significantly higher than that of the single-loop system under all operating conditions. With the increase in the indoor and outdoor temperature difference, the triple-loop heat pump system could significantly minimize the problems of excessive compression ratio and system performance degradation of the traditional air-source heat pump. Under winter conditions, the increase rate of the coefficient of performance(COP) of the triple-loop system reached up to 1.88. When the indoor and outdoor temperature difference was 40 ℃, the COP of the triple-loop system was 54.8% higher than that of the single-loop system. Under summer conditions, the increase rate of the COP of the triple-loop system reached 89.8%. When the indoor and outdoor temperature difference was 13 ℃, the COP of the triple-loop system was 74.6% higher than that of the single-loop system.
作者
马安娜
马国远
王磊
周峰
姜明健
晏祥慧
Ma Anna;Ma Guoyuan;Wang Lei;Zhou Feng;Jiang Mingjian;Yan Xianghui(College of Environmental and Energy Engineering, Beijing University of Technology, Beijng,100124, China)
出处
《制冷学报》
CAS
CSCD
北大核心
2019年第4期17-22,共6页
Journal of Refrigeration
基金
国家自然科学基金(51776004)资助项目~~
