直膨式太阳能空气源热泵热水器的运行性能研究  

Performance Analysis of Direct Expansion Solar Air Source Heat Pump Water Heater

作　　者：方雷 FANG Lei(School of Energy and Environment,Southeast University)

机构地区：[1]东南大学能源与环境学院,210096

出　　处：《建筑热能通风空调》2020年第4期7-11,共5页Building Energy & Environment

基　　金：国家十二五科技支撑项目(2014BAJ01B05)。

摘　　要：为了研究直膨式太阳能空气源热泵热水器(DX-SASHPWH)的系统性能,采用R134a作为工质,搭建了太阳能空气源热泵热水器实验装置,并且建立了系统数学模型。对比发现,模拟结果与实验结果吻合较好。利用模型和系统模拟程序,进一步分析了系统全年的运行特性。结果表明:在春、秋季典型晴天工况下,将120 L水从15℃加热到50℃,耗时204 min,平均COP为3.26,平均集热效率为0.73,耗电量为1.50。在冬季典型晴天工况下,将120 L水从7.5℃加热到50,耗时286 min,平均COP为3.27,平均集热效率为0.68,耗电量为1.81。In order to study the system performance of the direct expansion solar-air source heat pump water heater(DX-SASHPWH), the R134 a was used as the workingrefrigerant and the heat pump water heater experimental device was built, and the system mathematical model was established. The comparison found that the simulation results agree well with the experimental results. The model and system simulation program were used to further analyze the operating characteristics of the system throughout the year. The results show that under typical sunny conditions in spring and autumn, 120 L water is heated from 15 ℃ to 50 ℃, which takes 204 min, the average COP is 3.26, the average heat collection efficiency is 0.73, and the power consumption is 1.50 k W·h. Under the typical sunny day in winter, heating120 L water from 7.5 ℃ to 50 ℃, which takes 286 min, the average COP is 3.27, the average heat collection efficiency is0.68, and the power consumption is 1.81 k W·h.

关 键 词：太阳能 空气源 COP 集热效率 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]