Heat exchanger

Abstract

In a thermoelectric power generation module ( 7 ) serving as a heat exchanger, a large number of protrusions ( 5 a ) at least the surface of which is made of a material with low wettability are formed with a height and width of less than 0.01 mm and arranged with a pitch of less than 0.01 mm on the heat transfer surface ( 5 s) of a heat transfer plate 5 , thereby to increase in heat exchange efficiency.

What is claimed is:  
     
         1 . A heat exchanger for conducting heat exchange via a heat transfer member, wherein the heat transfer member has a heat transfer surface on which a large number of protrusions each having a height and a width of less than 0.01 mm, respectively, are disposed with a pitch of less than 0.01 mm, at least surface of the protrusions being made of a material with low wettability.