不同进口微通道蒸发器温度分布及换热性能  

Effect of inlet type on temperature distribution and heat transfer of microchannel evaporator

作　　者：黄澳 周帅杰 鲁进利[1] 韩亚芳[1] 吕杨 阴婷婷 Huang Ao;Zhou Shuaijie;Lu Jinli;Han Yafang;Lv Yang;Yin Tingting(School of Civil Engineering and Architecture,Anhui University of Technology,Ma'anshan 243032,China;Zhejiang Dun'an Thermal Technology Co.,Ltd,Zhuji 311800,China)

机构地区：[1]安徽工业大学建筑工程学院,马鞍山243032 [2]浙江盾安热工科技有限公司,诸暨311800

出　　处：《低温与超导》2023年第7期56-62,共7页Cryogenics and Superconductivity

基　　金：国家自然科学基金(51306002);安徽省自然科学基金(1508085QE95)资助。

摘　　要：使用扁管式微通道换热器替代柜式空调管翅式蒸发器,搭建了微通道蒸发器(MCE)实验测试平台。在制冷剂充注量为900~1 400 g、热负荷为3 600~5 700 W条件下,对比分析了两种入口方式的微通道蒸发器表面温度分布以及制冷量、输入功率、EER等性能参数。红外图像和热电偶测试结果均表明,入口方式对换热器内部制冷剂分配均匀性存在较大影响,进而影响了换热器表面温度分布一致性;随着充注量的增加,两种微通道换热器制冷量、EER均呈现先增大后减小的趋势;综合考虑制冷量和输入功率,得到MCE-A和MCE-B的最佳充注量分别为1 300 g和1 200 g。The flat tube microchannel heat exchanger was used to replace the tube fin evaporator of cabinet air conditioning,and an experimental system of microchannel evaporator(MCE)was built.the performance parameters of the microchannel evapo⁃rators such as surface temperature distribution,refrigeration capacity,input power and the energy efficiency ratio(EER)with two inlet types were compared and analyzed under the conditions of refrigerant filling rates of 900 g to 1400 g and heat load of 3600 W to 5700 W.The infrared thermal image and thermocouple test results show that the inlet type has a great influence on the uniform⁃ity of refrigerant distribution in the heat exchanger,and the uniformity of surface temperature distribution is also affected.With the increasing of refrigerant filling rate,the trend of first increasing and then decreasing of cooling capacity and EER of the two microchannel heat exchangers is presented.Considering the refrigeration capacity and input power,the optimal filling rates of MCE-A and MCE-B are 1300 g and 1200 g,respectively.

关 键 词：扁管微通道 充注量 热负荷 能效比 

分 类 号：TK567.2[动力工程及工程热物理—热能工程]