Preparation of boiling heat transfer surface

摘要

A boiling heat transfer surface for heat transfer between a heat source and a coolant is provided. On the heat transfer surface contacting with a liquid coolant such as fluorinated hydrocarbon type liquid coolants, metallic particles having grain size of 60 mesh pass and 250 mesh nonpass (Japanese Industrial Standard sieve) are piled up and fixed by a metallic film on the heat transfer surface.