中文摘要：

针对冷藏车厢设计中的多目标问题,考虑到车厢体传热、车厢密封性、货物呼吸热、以及车厢主要设计变量的实际约束条件,以车厢体传热系数最小与车厢内空间体积最大为目标函数,建立了冷藏车厢优化设计模型,利用Matlab软件对冷藏车厢进行参数优化,分析了不同参数条件下车厢体传热系数与最佳车厢体隔热材料厚度。结果表明：该优化方法可适用于冷藏车隔热厢体的优化设计,不同条件下对应的车厢体隔热材料最佳厚度与传热系数各不相同,当车速为零、车厢体隔热材料导热系数分别为0.007、0.023、0.030、0.042、0.045 W/（m·K）,同时满足最佳车厢体传热系数与车厢内体积最大条件,对应的车厢体隔热材料最佳厚度分别为0.07、0.14、0.16、0.19、0.20 m;传热系数分别为0.098 5、0.160 3、0.182 3、0.213 9、0.217 6 W/（m2·K）,车速越高,车厢体最佳隔热材料厚度越小、传热系数越大,车厢体隔热材料最佳厚度与车厢体传热系数呈正相关性。

英文摘要：

Aiming at the problem of multi-objective design for refrigerated compartment, an optimal design model of refrigerated compartment was established. The actual constraints of compartment heat transfer, compartment seal, respiratory heat of goods within the refrigerated compartment and its main design parameters were comprehensively considered. The smallest heat transfer coefficient and maximum internal space of compartment were selected as objective function. Parameters of the refrigerated compartment were optimized with Matlab software, and the compartment heat transfer coefficient and the best thickness of compartment insulation material under different parameters were analyzed. Results showed that the optimized design method was suitable for insulated compartment of refrigerated trucks. The optimized heat transfer coefficient and the smallest thickness of compartment insulation material were different under different conditions. When truck speed was zero and the thermal conductivities of compartment insulation material were 0. 007, 0. 023, 0. 030, 0. 042, 0. 045 W/（ m ^2· K） , and the conditions of optimal compartment heat transfer coefficient and the largest internal space of compartment were satisfied simultaneously, the corresponding optimal thicknesses of compartment insulation material were 0.07, 0. 14, 0. 16, 0.19, 0.20 m, and the heat transfer coefficients were 0. 098 5, 0. 160 3, 0. 182 3, 0. 213 9, 0. 217 6 W/（m^2· K） , respectively. The thickness of compartment insulation material decreased and compartment heat transfer coefficient increased with the increase of truck speed. In addition, there was a positive correlation between the smallest thickness of compartment insulation material and the optimal heat transfer coefficient.