特别地，至少一个阀或压缩机可被控制器迅速地循环操作，以调节经过阀或压缩机的制冷剂的量。
In particular, at least one valve or compressor can be can be rapidly cycled by the control to regulate amount of refrigerant passing through the valve or compressor.
用于通过经由所述泵使制冷剂循环经过所述制冷回路在所述自由冷却模式下选择性地操作所述制冷回路的控制器；
The controller selectively operates the system in the free-cooling mode by circulating the refrigerant through the refrigeration circuit via the pump.
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