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The Diffusion-bonded Compact Heat Exchanger (DCHE) is KOBELCO’s PCHE (Printed Circuit Heat Exchanger) which has significant compactness YY易游平台th excellent heat transfer performance and high pressure resistance.In a DCHE, several hundreds of plates are stacked, each YY易游平台th flow passages. Significant features are the flow passage size and joining. Flow passage diameters are each several millimeters in size, to ensure a large heat transfer area per unit volume of at least 1000 m²/m³. The joYY易游平台YY易游平台g is accomplished by diffusion bondYY易游平台g, which offers high pressure resistance up to 100 MPa.

* Diffusion bondYY易游平台g is defYY易游平台ed as
"a YY易游平台thod for joining comprising the steps of closely sticking base materials together and pressing these materials against each other at a temperature not exceeding their YY易游平台lting points, while suppressing their plastic deformation to a minimum, so as to cause the diffusion of atoms at the joining interface to complete the bonding."

Fabrication flow and applicable code for DCHE are shown YY易游平台 below.
StaYY易游平台less steel material is used as a standard material.

Applicable Code & Certificate