What does it mean to perform a pressure test on a heat exchanger to check for leaks?
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What does it mean to perform a pressure test on a heat exchanger to check for leaks?
Does anyone still ask such a simple question? :L
Heat exchanger leak testing: Hydrostatic test/pneumatic test (pressure testing for leak detection): After the manufacture or maintenance of a heat exchanger, it is necessary to conduct a leak detection procedure. The manufacturer usually uses water (due to its incompressibility) to increase the pressure to the specified level and then maintains this pressure for 24 hours, observing the degree of pressure drop； For maintenance purposes, the unit can be pressurized with compressed gas, after which a foaming agent such as soapy water can be used to check for bubbling ； For high-demand heat exchangers, the ammonia leak detection method (utilizing the reaction between ammonia and phenolphthalein solution) can be used, as it is relatively straightforward and accurate.