CO2跨临界水-水热泵系统模拟与实验对比分析  

Comparative analysis of simulation and experiment of transcritical CO2 water to water heat pump system

作　　者：杨俊兰 吴依彤 高思雨 YANG Jun-lan;WU Yi-tong;GAO Si-yu(School of Energy and Safety Engineering,Tianjin Chengjian University,Tianjin 300384,China)

机构地区：[1]天津城建大学能源与安全工程学院

出　　处：《化学工程》2019年第9期18-23,共6页Chemical Engineering(China)

基　　金：天津市自然科学基金资助项目(17JCZDJC31400);天津市科技特派员项目(16JCTPJC52800)

摘　　要：为了分析CO2跨临界水-水热泵系统性能,建立了数学模型,并进行实验研究,对系统性能进行模拟计算,并与实验值做了对比。分析了高压压力、冷却水和冷冻水的进口温度和流量对系统制冷性能系数COP和制热性能系数COPh的影响。结果表明:模拟值和实验值的一致性较好,从而验证了模型的准确性;系统的性能系数COP/COPh随着高压压力的增加先增大后缓慢下降;COP/COPh随着冷却水进口温度的升高而降低,随着冷冻水进口温度的升高而增大;随着冷却水流量和冷冻水流量的增大,COP/COPh呈现上升趋势。In order to analyze the performance of transcritical CO2 water to water heat pump system, a mathematical model was established and an experimental study was carried out. The performance of the system was simulated and compared with the experimental values. The effect of the heat rejection pressure, inlet temperature of cooling water and its mass flow rate and the inlet temperature of chilling water and its mass flow rate on the system cooing coefficient of performance COP and heating coefficient of performance COP h was analyzed.The results show that the simulated values are in good consistent with the experimental values, which proves the accuracy of the model.The COP/COP h of the system increases first and then decrease slowly with the increase of heat rejection pressure. The COP/COP h decreases with the increase of cooling water inlet temperature, and increases with the increment of chilling water inlet temperature. COP/COP h shows a growing trend with the increase of cooling and chilling water mass flow rate.

关 键 词：CO2跨临界水-水热泵 性能分析 模拟计算 

分 类 号：TB61[一般工业技术—制冷工程]