空气源热泵热水器除霜性能研究  

Research on the Defrosting Performance of Air Source Heat Pump Water Heater

作　　者：陈姝[1] 欧炯桦 李金城 陈嘉澍[1] 卓献荣[1] CHEN Shu;OU JIonghua;LI Jincheng;CHEN Jiashu;ZHUO Xianrong(Zhongkai university of Agriculture and Engineering,Guangzhou,510225)

机构地区：[1]仲恺农业工程学院,广州510025

出　　处：《制冷》2022年第3期36-40,共5页Refrigeration

摘　　要：空气源热泵热水器是采用清洁能源有效控制碳排放的有效手段,然而除霜是应用在中温高湿地区的关键技术问题,基于此,提出分组独立除霜方式,即将两排蒸发器并联分别进行独立轮流除霜,且进行分组独立除霜时不需要从热水中吸取热量,热水温度基本恒定。通过对逆循环除霜和分组独立除霜两种除霜模式在相同环境下进行实验研究,比较性能数据,发现当环境相对湿度在70±10%、温度在-4℃~4℃之间时,分组独立除霜模式较逆循环除霜模式的COP要高4.0%~5.8%,且COP高出值随着环境温度呈先升后降的趋势,在-2℃的时候达最高值5.8%。Air source heat pump water heater is an effective means to effectively control carbon emissions by using clean energy, but defrosting is a key technical problem used in areas with the climate of medium temperature and high humidity. Based on this, an independent-group defrosting method is proposed, that is, two rows of evaporators are for independent rotation defrosting, and the hot water temperature is basically constant when independent-group defrosting is carried out. Through the experimental study of the two defrosting modes of reverse cycle defrosting and independentgroup defrosting in the same environment, and comparing the COP data, it is found that when the environmental relative humidity is 70±10 % and the temperature is between-4 ℃ and 4 ℃, the COP of the independent-group defrosting mode is 4.0 %-5.8 % higher than that of the reverse cycle defrosting mode, and the high value of COP increases first and then decreases with the ambient temperature, reaching the highest value of 5.8 % at-2 ℃.

关 键 词：空气源热泵 分组独立除霜 逆循环除霜 COP 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]