直冷式冰箱系统内的辐射换热效果

EFFECT OF RADIANT HEAT TRANSFER IN THE SYSTEM OF DIRECT COOLING REFRIGERATOR

直冷式冰箱内各冷表面温度不同， 其红外辐射能量也随之而不同。而在此温度较低的环境中， 辐射传热的影响较大。通过对红外辐射的分析， 结合工程实践中的直冷式冰箱系统的特点， 采用蒙特卡罗法编写通用计算程序， 对综合的辐射过程进行数值模拟。针对具体的直冷式冰箱冷冻室作算例，

There exists temperature difference among the inner surfaces of the refrigerator.As a result,the infrared radiation energy of every surface is different and the radiant heat transfer plays an important role under the low temperature environment.On the basis of the Monte Carlo method,the analysis of infrared radiation energy and its distribution is carried out for a real refrigerator.Most of the real conditions are taken into consideration in the calculation.The final results help to explain and evaluate the physical phenomena and its importance.