For the indirect cooling method, glycol liquid as the secondary coolant is cooled in the refrigerating unit, pumped to the cooler in the house to cool the air.

乙二醇间接制冷方式是通过低温盐水机组将乙二醇降到一定温度，通过循环泵将乙二醇溶液供到需要制冷的气调库内换热器中，再由换热器对库内环境进行制冷。

youdao

According to the theory of indirect evaporative cooler, heat can be taken away through water evaporation by wrapping water absorbent film on the cooling surface of air conditioner condenser.

应用间接蒸发散热的原理，在空调冷凝器表面包覆吸水膜，利用水蒸发带走热量。

youdao

Analyses and calculates the thermal characteristics of the key equipment-air cooler for indirect free cooling tower used in communication rooms.

分析和计算了程控机房间接利用室外冷源的关键设备空气冷却器的热工特性。

youdao