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    1. location: home > Business > Diffusion Bonding Product > Printed Circuit Heat Exchanger

      Printed Circuit Heat Exchanger

      Printed Circuit Heat Exchanger (PCHE) is a compact heat exchanger with microchannels that has the advantages of high efficiency (up to 98%), low pressure drop, high compactness (1/6 ~ 1/4 of conventional shell and tube heat exchanger), corrosion resistance and good reliability. It can be used under the working pressure over 50 MPa and the working temperature over 700℃.
      Applications
      1)Hydrocarbon gas and NGL processing
      Gas processing – compression cooling, liquids recovery, dehydration
      LNG and other cryogenic applications
      Synthetic fuels production – methanol etc.
      Air separation
      2)Refining
      Reactor feed/effluent exchangers
      3)Chemical processing
      Acids – nitric, phosphoric etc.
      Alkalis – caustic soda, caustic potash
      Fertilisers – ammonia, urea
      Petrochemicals – ethylene oxide, propylene etc.
      Pharmaceuticals
      Plastics – formaldehyde, phenol etc.
      Microtechnology
      Chemical reactors
      4)Power and energy
      Geothermal generation
      Nuclear applications
      Fuel cells
      Fuel gas heating – gas turbines
      5)Refrigeration
      Chillers and condensers
      Cascade condensers
      Absorption cycles
      The manufacturing process of PCHE
      1) Chemical etching
      Channels are etched by using chemical etching method. The cross-section of the channels is usually semi-circle with radius of 1 ~ 2 mm. The channel forms are customized according to the actual need. 
      2) Solid-state additive manufacturing
      The etched plates are stacked to form the structure of the heat exchanger. The plates are diffusion bonded to turn into precision and high-strength block structure.
      3) Integrated manufacturing
      The blocks with channel structures are fusion welded together to form the integral core structure. Fluid guide and drainage devices are welded with the core to form the heat exchanger.

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