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What to do if the temperature difference between the inlet and outlet of the chiller is small

Update:11-10-2021
Summary:

1. The output cooling capacity of the chiller is small, […]

1. The output cooling capacity of the chiller is small, such as the chiller itself is faulty, or not fully loaded, etc. These can be preliminary judged by observing the operating current and other parameters of the chiller.
2. It may also be that the heat transfer effect is not good. For example, the heat transfer tube has serious scale and affects the heat transfer of the chiller. This can be judged by observing the heat transfer temperature difference between the water temperature and the evaporation temperature.
3. The water flow is too large. This can be judged by observing the pressure difference between the inlet and outlet water of the evaporator and the running current of the water pump.
4. After eliminating the above problems, you can consider whether the sensor or the temperature gauge is inaccurate.

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