The temperature at the drive end of the chilled water pump is very high, exceeding 65. What is the reason
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The temperature at the drive end of the chilled water pump is very high, exceeding 65 degrees. What is the reason? The designed water flow rate is 190 nm3/h, and it has currently been operating at full capacity at 190 for an extended period. Chilled water at 6 degrees. A fan is now used at the drive end to force ventilation, but the effect is limited. . Personally, I wonder if the pump selected is too small?
It should be fine, I think most centrifugal pumps require 65 degrees; in reality, new pumps might need around 75 degrees.
Adding too much or too little bearing grease, as well as the use of degraded grease, can all cause the bearing temperature to rise. If none of these issues are present, then there is a problem with the selection of the water pump.
It has been in operation for 18 months, during which time oil was added twice. But the drive side temperature is normal in winter
Are there any specific guidelines for selecting water pumps?