基于制冷剂大流量除霜的空气源热泵系统性能研究  

Research on Performance of Air-source Heat Pump System Based on Large Refrigerant Flow Defrosting

作　　者：骆名文 张光鹏 黄华 相明琼 王如竹[3] 胡斌[3] LUO Mingwen;ZHANG Guangpeng;HUANG Hua;XIANG Mingqiong;WANG Ruzhu;HU Bin(Guangdong Midea HVAC Equipment Co.,Ltd.,Foshan 528311,Guangdong,China;Technical Center for Mechanical and Electrical Product Inspection and Testing of Shanghai Customs District,Shanghai 200002,China;Institute of Refrigeration and Cryogenics,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]广东美的暖通设备有限公司,广东佛山528311 [2]上海海关机电产品检测技术中心,上海200002 [3]上海交通大学制冷与低温工程研究所,上海200240

出　　处：《制冷技术》2024年第3期8-12,20,共6页Chinese Journal of Refrigeration Technology

摘　　要：为了解决空气源热泵逆向循环除霜方法除霜时间长的问题,本文提出制冷剂大流量除霜技术,该技术通过增加旁通流路改进制冷剂循环系统的节流部件,增大制冷剂循环流量,实验研究了空气源热泵大流量除霜性能及可靠性。结果表明:与传统除霜系统相比,制冷剂大流量系统的除霜时间最长可以缩短约1/3,即使在极端环境也能够保证良好的除霜效果;制冷剂大流量系统降低了除霜运行对制热性能的影响,制热量和性能系数分别提高了14.60%~32.44%和2%~11.76%。In order to solve the problem of long defrosting time in reverse cycle defrosting method of air-source heat pump,a large refrigerant flow defrosting technology for air-source heat pump is proposed.It improves the throttling components of refrigerant circulation system by adding bypass flow path,which could increase the circulation flow of refrigerant.The defrosting performance and reliability oflarge flow defrosting system are studied by experiments.The results show that,compared with the traditional defrosting system,the defrosting time of large flow defrosting system can be shortened by about one-third,even in extreme environment,it can guarantee excellent defrosting effect.Thus,the influence of defrosting operation on heating performance can be reduced,and it shows the heating capacity and coefficient of performance are increased by 14.60%-32.44%and 2%-11.76%respectively.

关 键 词：空气源热泵 大流量除霜 排气压力 性能系数 

分 类 号：TB611[一般工业技术—制冷工程] TQ051.5[化学工程]