不同冷板布置方式的冷板车内温度场模拟

目的为防止铁路冷板冷藏车在运输货物时发生货物腐烂变质,研究冷板在侧置、顶置不同的布置方式时车厢内温度场分布和变化规律及主要影响因素.方法应用有限元法,对冷板侧置、顶置及在不同冷板冻结温度和储藏食品温度下的冷板车车内温度场进行数值模拟.结果得出车厢内主要代表截面和代表点的温度随时间的变化情况,对于冷板侧置无论运输冻货还是冷藏货物都是车厢下部货物温升高于其他处货物的温升,尤其紧靠车门下部的货物温升最高;冷板顶置时在相同条件下总比冷板侧置时温升高.结论冷冻货物与冷藏货物的温度变化趋势是一致的.温度场模拟为开发方便高效的冷板冷藏车提供技术依据.

The Simulation of Temperature Field inside Cold- Plate Refrigerator Car Following Different Setting of Cold Plate

In order to prevent the goods transported in the railroad cold-plate refrigerator car(CPRC) from decaying on the way,and study of cold plate upon main factors and rules of temperature distribution and change of the temperature field,which locates different places on the side and top of the car.Using the finite element method,the temperature fields among different location of cold plate,the freezing,and storing temperature for foods in CPRC are calculated by means of simulation.the temperature located in main representative section and point within the car is changing according to the time.The temperature of the bottom of goods,especially for parts close to the gate,is rising higher than others whatever the cold plates are set aside in carrying frozen foods or freezing foods on the way.The temperature change tendency is consistent between frozen foods and freezing foods.Temperature field simulation to provides technique evidence for developing efficient CPRC.