外部环境对冷板冷藏车制冷系统性能的影响  

Influence of outdoor environment on performance of hold-over plate refrigerated vehicles refrigeration system

作　　者：杨培志[1] 

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410075

出　　处：《热科学与技术》2011年第2期123-127,共5页Journal of Thermal Science and Technology

基　　金：湖南省科技计划资助项目(2010RS4021);中南大学自由探索计划资助项目;中南大学博士后科学基金资助项目

摘　　要：对冷板冷藏车中冷凝器建立了动态分布参数模型,并与蒸发器、压缩机及热力膨胀阀模型联立求解,得到了制冷系统运行的动态仿真解。分析了冷凝器迎面风速和进风温度对制冷系统运行的影响,结果表明:在一定冷凝器进风温度下,迎面风速的改变将对制冷量、制冷系数及充冷时间产生影响;冷凝器进风温度对制冷系统的制冷能力有一定影响,建议在环境温度较低时进行充冷,可适当缩短充冷时间。The dynamic mathematic models of hold-over plate refrigerated vehicles＇ condenser were established.The models were composed of the models of evaporator,compressor and thermodynamic expansion valve.The dynamic simulation results were obtained.The effect of the face velocity and air temperature on the refrigeration system was analyzed.The results indicate that the face velocity and air temperature affect the performance of refrigeration system,and the suggestion is that the hold-over plate should be charged in low temperature surrounding.

关 键 词：冷板冷藏车 制冷系统 动态仿真 充冷时间 

分 类 号：TK511.3[动力工程及工程热物理—热能工程] U473.4[机械工程—车辆工程]