多温区冷藏车厢温度场影响因素的数值模拟

摘要

In this paper, in view of the optimization of the design parameters of the multi-zone refrigeration lorry, we built the physical model of the thermal dynamics across the multiple temperature zones and derived the dynamic equation of the thermal balance of the refrigeration lorry. Then we analyzed the factors influencing the even thermal distribution and storage reliability in the lorry carriage. At the end, in the case of the red bayberry, we simulated the evaluation index and the mutual influence between the factors and determined the optimal design parameters for the lorry carriage.%针对多温区冷藏车车厢设计参数的优化问题，建立了冷量在多温区流动的物理模型，推导出冷藏车多温区温度变化的热平衡动态方程。分析风扇出风口温度，总体匀流板孔隙率，匀流板高度等因素对车厢总体温度不均匀程度以及储藏可靠性的影响。以杨梅为例数值模拟出评价指标与因素间的相互影响规律。仿真结果表明：风扇出风口温度为-2.5℃，总体匀流板孔隙率为0.215，高度为40mm为本实验多温区冷藏车厢的较优设计参数。