摘要
建立电冰箱换热器试验台,对具有百叶窗翅片的微通道冷凝器制冷剂侧的传热和压降进行测试。结果表明:随着制冷剂质量流速的增加,冷凝器换热量、换热系数及制冷剂流动压降均增大,在冷凝压力为1.46MPa,制冷剂质量流速从90 kg/(m^2·s)增加到150 kg/(m^2·s)时,换热量、换热系数和压降分别增加63%,116%和166%;随着冷凝压力的升高,换热量增大,换热系数减小,在制冷剂质量流速为150 kg/(m^2·s)时,冷凝压力为1.46 MPa与冷凝压力为1.16 MPa相比,换热量增加12%,换热系数降低39%。
A test stand for heat exchanger of refrigerator is established,and the heat refrigerant-side heat transfer and pressure drop of a microchannel condenser with louvered fins are tested. The results show that with the increase of refrigerant mass flux,the heat transfer capacity,heat transfer coefficient and refrigerant flow pressure drop of the condenser increase.When the condensing pressure is 1. 46 MPa,the heat transfer capacity,heat transfer coefficient and refrigerant flow pressure drop of condenser are increased by 63%,116% and 166% respectively with the mass flux of refrigerant increases from 90 kg/ (m^2·s) to 150 kg/ (m^2·s);with the increase of condensing pressure,the heat transfer capacity increases,heat transfer coefficient decreases. When the mass flux of refrigerant is 150 kg/ (m^2·s),with the condensing pressure of 1. 46 MPa,the heat transfer capacity is increased by 12%,and the heat transfer coefficient is decreased by 39% compared with the condensing pressure of 1.16 MPa.
作者
吕凯萍
杜鹏飞
王德昌
李立顺
李延辉
Lv Kaiping;Du Pengfein;Wang Dechang;Li Lishun;Li Yanhui(Qingdao University;Jiangsu Zhongke Kingda Internet of Things Co.,Ltd.)
出处
《制冷与空调》
2020年第6期93-97,共5页
Refrigeration and Air-Conditioning
关键词
微通道冷凝器
性能测试
换热量
换热系数
压降
microchannel condenser
performance test
heat transfer capacity
heat transfer coefficient
pressure drop
