摘要
本文探讨了循环水流量﹑热水温度及环境温度等参数对小型复叠式空气源热泵采暖系统性能的影响。实验结果表明:在一定温度范围内,随着制取热水温度的升高,热泵的制热量逐渐降低,热泵的输入功率逐渐增大,系统COP呈下降趋势;当制取的热水温度相同、环境温度较高时,热泵的制热量、热泵平均COP值较高;在一定流量范围内,循环流量越大,热泵的制热能力越高,当制取热水的温度相同时,大循环流量下高温环路的压缩机排气温度越低,运行越稳定。
In this paper, the effects of circulating water velocity, hot water temperature and ambient temperature on the performance of small cascade low temperature air source heat pump heating system were discussed. The experimental results show that in a certain temperature range, with the increase of hot water temperature, the heat produced by the heat pump decreases gradually, the input power of the heat pump increases gradually, and the COP value of the system decreases. When the temperature of hot water is the same, the heat produced by heat pump is higher, and the average COP value of heat pump is higher when the ambient temperature is higher;Within a certain flow range, the heating capacity of the heat pump is positively correlated with the circulating flow rate, the higher the thermal capacity, when the temperature of hot water is the same, the exhaust temperature of compressor in high temperature loop is lower and the operation is more stable at large circulation velocity.
作者
鲁祥友
凌帆
唐景春
谢远来
张进新
Lu Xiangyou;Ling Fan;Tang Jingchun;Xie Yuanlai;Zhang Jinxin(School of Environment and Energy Engineering,Anhui Jianzhu University,Hefei 230601,China;School of Automobile and Traffic Engineering,Hefei University of Technology,Hefei 230009,China;Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China)
出处
《低温与超导》
CAS
北大核心
2020年第4期47-51,共5页
Cryogenics and Superconductivity
基金
国家自然科学基金项目(51606002)
安徽省高校省级自然科学研究项目(KJ2019A0755)
安徽建筑大学自然科学研究项目(JY16-3-184)。
关键词
热泵
水箱
制热量
传热
流量
Heat pump
Water tank
Calorific production
Heat transfer
Flow
