冷藏运输车真空隔热厢体的温度场特性仿真研究  

Simulation study on temperature field characteristics of refrigerated van body embedded by vacuum insulation panels

作　　者：刘杰坤 陆华忠[1,2] 李君[1,2] 栗栋[1,2] 杨松夏[1,2] 郭嘉明[1,2] 

机构地区：[1]华南农业大学南方农业机械与装备关键技术教育部重点实验室,广东广州510642 [2]华南农业大学工程学院,广东广州510642

出　　处：《食品与机械》2014年第4期137-141,共5页Food and Machinery

基　　金：国家科技支撑计划课题(编号:2013BAD19B01);现代农业产业技术体系建设专项资金(编号:CARS-33-13)

摘　　要：为提高冷藏运输车厢的隔热性能,设计一种聚氨酯嵌套真空隔热板复合结构,对比分析聚氨酯嵌套真空隔热板复合结构、全聚氨酯板的"Z"字型和"工"字型加强筋结构的热力学性能,对嵌套真空隔热板和全聚氨酯板的厢体进行温度场模拟仿真,研究真空隔热板在保温板中的不同嵌套位置对厢体隔热性能的影响。仿真结果表明:聚氨酯嵌套真空隔热板复合结构符合强度要求,可提高车厢的隔热性能,真空隔热板嵌入保温板中间,被聚氨酯形成良性包围的情况下更能充分发挥真空隔热板的隔热性能。In order to improve the heat-shielding performance of the refrigerated van body, a kind of composite structure was designed, with Vacuum Insulation Panel （VIP） and Polyurethane （PU） materials. The thermodynamic properties of the proposed composite structure and traditional PU structure with ＂Z＂ type or ＂H＂ type re inforcing ribs were analyzed The FLUENT software was used to simulate the temperature field characteristics of the refrigerated van body with VIPs and without VIPs. The effect of nested VIP position variations was studied on the thermodynamics of the refrigerated van body in the insulation board. The simulation results showed that the proposed composite structure could meet the demands of strength requirement and improve the insulation performance of the van body.The VIPs embedded in the middle of the insulation board and surrounded by PU materials had good insulation performance.

关 键 词：冷藏运输车厢 真空隔热板 复合结构 温度场特性 

分 类 号：TS205.7[轻工技术与工程—食品科学]