Analysis of Failure Mechanism of Air Conditioning Connecting Pipe Blackening
In the air conditioning system,the connecting pipe is the transmission of hot and cold media pipe,its surface will be due to temperature differences and heat transfer,resulting in energy loss,usually the connecting pipe will be covered with insulation pipe for insulation,after-sales feedback using rubber and plastic insulation pipe after placing for a period of time will appear black copper pipe situation.By means of macroscopic examination,microscopic examination,EDS,metallographic analysis and chemical analysis,the results show that the main composition of the black material is copper sulfide(CuS).It can be optimized from the production formula to solve the problem of black copper pipe caused by thermal insulation pipe.
rubber and plastic insulation pipeturn blackcopper sulfide
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