Air conditioner in refrigeration (hot) operation unit within the time from an airtight room removed from the heat, the statutory measurement unit W (watts).

空调器在进行制冷（热）运转单位时间内从密闭空间除去的热量，法定计量单位W（瓦）。

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To solve the unstable operation of the water chiller unit, probes into the feasibility of fresh air cooling for a clean room and provides a design procedure verified with an example in Beijing.

针对北方地区洁净室冬季供冷时冷水机组运行不稳定的问题，研究了采用新风作为冬季冷源的可行性，给出了具体设计方法，并利用北京地区的设计实例作了验证。

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