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℃.The manufacturing process of PCHE
1)Hydrocarbon gas and NGL processing
Gas processing – compression cooling, liquids recovery, dehydration
LNG and other cryogenic applications
Synthetic fuels production – methanol etc.
Reactor feed/effluent exchangers
Acids – nitric, phosphoric etc.
Alkalis – caustic soda, caustic potash
Fertilisers – ammonia, urea
Petrochemicals – ethylene oxide, propylene etc.
Plastics – formaldehyde, phenol etc.
4)Power and energy
Fuel gas heating – gas turbines
Chillers and condensers
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.