Plate heat exchanger

摘要

A plate-type heat exchanger for hot gas engines of the Stirling type includes stacked pairs of elongated rectangular plates joined at the longitudinal edges with spaces between the paired plates constituting the cold gas flow passages and spaces between plate pairs constituting the hot gas flow passages. Paired plates have mirror image protrusions protruding from the respective abutted longitudinal margins, which protrusion form the internal cold gas flow passages and also provide the spacing between adjacent abutting pairs that constitutes the hot gas flow passages. Abutting plates of adjacent stacked pairs are joined at the abutting transverse margins.