The piston compressor, the oldest in places such as the cold storage, many central air conditioning unit, and small piston compressor in the fridge and air conditioning.

活塞式压缩机资格最老，用的地方很多如冷库、中央空调机组、还有小型活塞式压缩机用在冰箱和空调中。

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Cold air through the cooling system after exchange of hot air into a cooling fan unit discharges.

冷空气通过冷却系统交换后变成热空气被冷却风扇排出机组。

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After cause analysis of the pipe deformation inside cold box, some corresponding precaution measures are proposed from the aspects of design, fabrication and operation of air separation unit.

文章详细分析了空分设备冷箱内管道变形的原因，从空分设备的设计制造和操作方面，提出了相应的防范措施。

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When the truck is stopped, the driver turns on an air handler that circulates coolant around the ice and blows cold air from the unit into the bunk area of the cab.

CNN: An eco-friendly way to cool big trucks