Heat exchanger put into operation
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When putting a heat exchanger into use, should cold fluid or hot fluid be introduced first? What is the reason?
First, cool fluid is injected to prevent the single-pass side of the heat exchanger from being heated and causing damage to the equipment
Pour the cold one first. Should the utility systems be installed first?
When putting the heat exchanger into use, the cold side is activated first. To prevent excessive heating in a single tube pass of the heat exchanger, which could cause cracks in the tubes and the tube sheet
Low pressure first, then high pressure; cold first, then hot
It’s correct upstairs too. Quite rare~~~It seems the poster asked a question on which there is general consensus~~~
When putting a heat exchanger into use, hot air should be introduced first to purge the pipes of impurities; if cold gas is used first and then hot gas, it can cause the heat exchanger to freeze and get damaged due to thermal expansion and contraction.