本文主要研究间接冷藏时陈列柜操作的除霜方面。本文提供了三种模式下同一显示屏除霜循环的实验结果:（a）电阻加热器（在常规DX模式下运行24小时后），（b）温热液体，以及（c）电加热器。在二次回路模式下运行24小时后进行除霜（b）和（c）。本文讨论了除霜过程中操作参数的变化，确定了显示柜中的关键位置，并提出了除霜控制变量。 所提供的数据分析了温液体流速和温度对除霜的影响。结果表明，热流体温度和流体速度的增加会加快热交换器的除霜速度，但不会影响显示屏其他部件（风道、滴油盘等）的除霜。单位:SICitation:专题讨论会，ASHRAE交易，第107卷，pt。2.

This paper focuses on defrost aspects of display case operation when indirectly refrigerated. The paper provides experimental results of defrost cycles in the same display case in three modes: (a) electrical resistance heater (after 24 h of operation in the conventional DX mode), (b) warm liquid, and (c) electric heater. Defrosts (b) and (c) were performed after 24 h of operation in the secondary loop mode. This paper discusses the change of operating parameters in defrost, identifies critical locations in the display case, and suggests control variables for defrost. The data presented analyze the effects of the warm liquid flow rate and temperature on defrost. It is shown that an increase in the warm fluid temperature and fluid velocity speeds up the defrost of the heat exchanger but does not affect defrost of other parts of the display case (air ducts, drip pan, etc.).Units: SI