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陈列柜的热负荷计算是陈列柜设计和制冷机组选配的基础,因此对陈列柜热负荷定性定量地分析有着非常重要的意义。立式玻璃门陈列柜热负荷可以分为两个区间分别分析:稳态运行区间和非稳态运行区间;其中稳态运行区间的热负荷包括传导热负荷和环境辐射热负荷和陈列柜自身热负荷三部分,非稳态运行区间的热负荷包括装卸货热负荷和融霜热负荷两部分;在此基础上,对各部分热负荷分别测定和计算。通过实验验证,说明该分析方法是可行的并具有一定的实际应用价值。
The heat load calculation of showcases is the basis for the design of showcases and matching of refrigeration units. Therefore, it is very important to analyze qualitatively and quantitatively the heat load of showcases. Vertical glass door showcase heat load can be divided into two sections were analyzed: the steady-state operating range and unsteady operating range; which steady-state operating range of thermal load including thermal conductivity and environmental radiant heat load and showcase heat The three parts of load, the thermal load in unsteady operation range include the loading and unloading thermal load and the frost heat load. On this basis, the thermal load of each part is measured and calculated respectively. The experimental verification shows that the method is feasible and has some practical value.