冷凝器喷雾对改善空气源热泵制冷性能的实验研究  

Experimental study on improving refrigeration performance of air source heat pump by condenser spray

作　　者：吴筱晗 崔红社[1] 刘龙 陈晓林 WU Xiaohan;CUI Hongshe;LIU Long;CHEN Xiaolin(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266525,China;Qingdao Lianshengchuang Energy Co.Ltd.,Qingdao 266071,China)

机构地区：[1]青岛理工大学环境与市政工程学院,青岛266525 [2]青岛联盛创能源科技有限公司,青岛266071

出　　处：《青岛理工大学学报》2023年第1期76-84,共9页Journal of Qingdao University of Technology

基　　金：山东省高等学校科技计划项目(J18KA189)。

摘　　要：针对空气源热泵在夏季高温天气下制冷性能衰减的问题,提出在冷凝器翅片外部增设喷雾装置的方法,达到提升系统性能的目的。设计了不喷雾、向外喷雾、向内喷雾、向内喷淋四种实验工况。基于实验数据,分析了不同温湿度条件下四种工况的系统性能。实验结果表明,与未喷雾时机组的能效比(Coefficient Of Performance,简称COP)相比,向外喷雾时机组的COP最大增幅为4.67%,向内喷雾时机组的COP最大增幅为6.07%,向内喷淋时机组的COP最大增幅为6.70%;理论喷雾量与实际喷雾量对比结果表明,以室外干球温度25~30℃、相对湿度55%为例,向外喷雾的实际喷雾量约是理论喷雾量的90%,向内喷雾的实际喷雾量约是理论喷雾量的81%;提出喷雾节能比的概念,结果表明,向内喷雾的喷雾节能比最大,为最优喷雾方式。In order to solve the problem that the cooling performance of air source heat pump is attenuated under high temperature in summer, a method of adding a spray device outside the condenser fin is proposed in this study to improve the performance of the system. Four experimental conditions of non-spraying, outward mist spraying, inward mist spraying and inward water spraying are designed. Based on the experimental data, the system performance of the four operating conditions under different temperature and humidity conditions is analyzed. The results show that, compared with the COP(Coefficient Of Performance) of the unit when it is not spraying, the maximum increase of the COP of the unit when spraying mist outward is 4.67%, the maximum increase of the COP of the unit when spraying mist inward is 6.07%, and the maximum increase of the COP of the unit when spraying water inward is 6.70%. The comparison between theoretical spray volume and actual spray volume shows that, taking the outdoor dry bulb temperature of 25 ℃ to 30 ℃ and the relative humidity of 55% as an example, the actual outward mist spray volume is about 90% of the theoretical spray volume, and the actual inward mist spray volume is about 81% of the theoretical spray volume. The concept of spray energy saving ratio is put forward, and the results show that the spray energy saving ratio of inward mist spray is the largest, which is the optimal spray method.

关 键 词：空气源热泵 喷雾冷却 制冷性能 喷雾方式 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]