微通道换热器CO2汽车空调系统性能仿真研究  

Simulation research on CO2 automotive air conditions system equipped with micro-channel heat exchangers

作　　者：张旭[1] 吕静[1] 王太晟 马逸平 ZHANG Xu;LV Jing;WANG Taisheng(College of Environment and Building, University of Shanghai for Science and Technology, Shanghai 200093,China)

机构地区：[1]上海理工大学环境与建筑学院

出　　处：《山东建筑大学学报》2019年第3期42-49,共8页Journal of Shandong Jianzhu University

基　　金：沪江基金项目(D14003);上海理工大学教育教学改革研究项目(2015-JPBKZ-005)

摘　　要：对采用微通道换热器的二氧化碳(CO2)汽车空调系统进行仿真研究,可以为CO2 汽车空调的性能优化提供参考依据。文章基于Matlab平台,建立了CO2 汽车空调系统各部件和完整系统的仿真模型并开发了仿真流程,将仿真结果与实验数据进行比较,利用仿真模型定量分析了CO2 汽车空调系统的性能。结果表明:仿真模型具有较高的准确性;气冷器中的不可逆熵增最大,电子膨胀阀、蒸发器和压缩机中的不可逆熵增居次;系统能效比(COP)随车内温度和相对湿度的升高而增大,并随车外温度的升高和压缩机轴功率的增大而降低。The nsimulation study on CO2 automotive air conditions equipped with micro-channel heat exchangers can provide reference basis for improving the performance of CO2 automotive air conditions. In this paper, the simulation models of each component and complete system of CO2 automotive air conditioning system are established and the simulation process is developed on the platform of MATLAB. The simulation results were compared with the experimental data, and the performance of the CO2 automotive air conditioning system was quantitatively analyzed by using the simulation models. The results show that the simulation models have higher accuracy;the irreversible entropy increase in the gas cooler is the largest, and in turn, the electronic expansion valve, evaporator and compressor. The coefficient of performance (COP) of the system increases with the increase of temperature and relative humidity in the car, and it decreases with the increase of outside temperature and compressor shaft power.

关 键 词：微通道换热器 CO2 汽车空调 仿真模型 熵分析 

分 类 号：TB657.5[一般工业技术—制冷工程] TK124[动力工程及工程热物理—工程热物理]