本文开发的PLC制冷控制系统具有配置灵活、组态方便，功能扩展性强的特点。
PLC refrigeration control system that this text develops is disposed flexibly, the configuration is convenient, expanding strong characteristic of function.
这就要求一个水温控制系统，通常包括水泵、过滤装置、热交换器、阀门以控制冷却水流量。
This requires a water temperature-control system, usually consisting of a water pump, filter, heat exchanger, and valving to control chilled water input.
针对制冷过程的特点，提出了电冰箱控制系统的最大能效比控制方法，使制冷系统工作在最佳状态。
The control scheme of maximum COP value of electrical refrigerator is presented, making the refrigeration system operation in the well efficiency.
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