Semi-welded plate heat exchanger is this kind of heat exchanger,whose plates are consist oftwo plates which is welded by laser along the sealgroove, and the two plates are sealed by the gasekts which clamped on the fxed plate and active plate through superposition, The advantage oisemiwelded plate heat exchanger is that one side is sealed by welding and the other siede is sealed by gasket in order to clean easily, Meanwhilethere are two special gaskets to seal the two corner pores in the welding side in order to use the fewest seal gaskets.
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Application:Semi-welded plate heat exchanger takesthe place of shell and tube heat exchanger andwelded plate heat exchanger, which is applied forcooling and chemical processing, especially for thesteam and condensate of refrigerant, such as ammonia and the chemical processing of corrosive liquid.Semi-welded plate heat exchangers are applied in thefollowing felds, such as ammonia refrigeration, sulfu-ric acid, caustic soda, petrochemical industry, metal-lurgy industry, mechanical industry, pharmacy indus-try and food industry and so on.
