环境参数对平行流蒸发器结霜动态性能的影响  

Effects of Environmental Parameters on Frosting Dynamic Performance of Parallel Flow Evaporator

作　　者：朱建民[1] 王丹东[1] 陈江平[1] ZHU Jianmin;WANG Dandong;CHEN Jiangping(Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China)

机构地区：[1]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》2017年第2期44-50,共7页Chinese Journal of Refrigeration Technology

摘　　要：本文在焓差法空调器性能实验台上对一个汽车空调用平行流蒸发器的结霜过程进行了实验研究。在不同进风温度、进风相对湿度和风速等环境参数下,分析了蒸发器的翅片霜层厚度、结霜量、制冷量和空气压降随结霜时间的变化规律。结果表明不同环境参数对平行流蒸发器结霜的影响有较大差别,而且霜层生长规律与蒸发压力的变化密切相关。The experiment on an enthalpy-difference test bench to investigate the frosting process of a parallelflow evaporator used in vehicle air-conditioner is conducted.The variations of frost thickness,frost amount,refrigerating capacity and air pressure drop on the evaporator with different frosting time are studied under theconditions of different inlet air temperature,relative humidity and wind speed.The results show that,differentenvironmental parameters have distinct effect on frosting,and the frost layer growth rule was closely related to thechange of evaporating pressure.

关 键 词：结霜 平行流蒸发器 性能 环境参数 

分 类 号：U463.851[机械工程—车辆工程]