摘要
本文通过对两套采用微通道换热器的KFR-72LW空调器样机(1号机:室内外换热器均采用微通道换热器;2号机:室外机为微通道换热器,室内机为管翅式换热器),分别进行性能测试,对比分析采用微通道换热器与管翅式换热器的空调器性能差异。试验结果分析显示:微通道换热器空调器具有高效(强制冷性能)、减排(减少制冷剂充注量)、低成本(换热器小型化)等优点;但制热工况下,因室外机采用微通道换热器,换热面积大幅度减小,蒸发压力过低,导致制热效果不良、系统频繁除霜等问题,有待于进一步研究解决。
This paper presents the capability difference between two KFR -72LW air conditioners （No. 1 u.nit with indoor and outdoor micro - channel heat exchangers and No. 2 unit with indoor fin - tube heat exchanger and outdoor micro - channel heat exchanger） by testing the performance of both air conditioners. The test results show that the air conditioner with micro - channel heat exchanger is higher - efficiency, less refrigerant charge and lower cost. But due to the greatly reduction of the area of the outdoor micro - channel heat exchanger it have the deficiency of lower heating capacity and frequent defrosting cycle. These problems need to be concerned and solved.
出处
《制冷技术》
2010年第1期33-36,共4页
Chinese Journal of Refrigeration Technology
关键词
微通道换热器
管翅式换热器
制冷性能
制冷剂充注量
高效
microchannel heat exchangers
fin -tube heat exchanger
refrigerating performance
refrigerant charge
high - efficiency
