冷藏车冷风导流系统的设计及热流场分析  

Design of Cold Air Guide System and Analysis of Heat Flow Field of Refrigerated Truck

作　　者：田甜 李细霞 徐添桦 李长玉 TIAN Tian;LI Xi-xia;XU Tian-hua;LI Chang-yu(Guangzhou City University of Technology,Guangzhou 510800,China)

机构地区：[1]广州城市理工学院,广州510800

出　　处：《包装工程》2022年第21期123-129,共7页Packaging Engineering

基　　金：广东省特色创新项目(自然科学类)(2021KTSCX172)。

摘　　要：目的为了使冷藏车在运输过程中冷风分布更均匀,提高对货物的冷却效果。方法设计一种冷藏车冷风导流系统,建立其三维几何模型及冷藏车制冷时的热物理模型。利用计算仿真的方式分析了冷藏车在运输苹果过程中车厢内冷风流向及温度场随时间变化情况,分析了冷风导流系统及其气孔直径、气孔间隔、导流槽尺寸、回风道宽度、入口风速等关键参数对运输过程中冷却效果的影响。通过分析的结果确定了冷风导流系统的关键尺寸。结果发现设计的冷风导流系统可将运输过程中货物温度最大值降低5.9 K,回风道宽度在150 mm左右为宜。结论文中设计的冷藏车冷风导流系统可有效提高冷却效果,相关的方法可为冷藏车设计提供一定的参考。The work aims to make the cold air distribution of refrigerated truck more uniform during transportation and improve the cooling effect on goods.A cold air guide system was designed for refrigerated truck,and its three-dimensional geometric model and thermodynamic model during refrigeration were established.The changes of cold air flow direction and temperature field in the compartment with time during the transportation of apples were analyzed by means of calculation and simulation.The effects of key parameters such as pore diameter,pore interval,guide groove size,return air duct width and inlet wind speed on the cooling effect during the transportation were analyzed.Through the analysis results,the key dimensions of the cold air guide system were determined.It was found that the designed cold air guide system could reduce the maximum goods temperature by 5.9 K during transportation,and the width of return air duct should be about 150 mm.The designed cold air guide system can effectively improve the cooling effect,and the relevant methods can provide a certain reference for the design of refrigerated truck.

关 键 词：冷藏车 冷风导流系统 热流场 入口风速 

分 类 号：TB485.3[一般工业技术—包装工程]