Abstract
The heat exchanger made by fine ceramics like the silicon carbide (SiC) have been widely used in the high temperature and corrosion environment in which the metal can not use. It is difficult to jumboize the heat exchanger made by SiC ceramics from a viewpoint of the cost and reliability. In order to attempt the heat transfer enhancement of the heat exchanger made by SiC ceramics, the heat transfer surface that has nanostructure by carbon nano tubes (CNT) was formed by the surface decomposition of SiC, and a heat transfer characteristic was evaluated. As a result, significant effect of nanostructure surface could not be confirmed. It is thought that change in wettability on heat transfer surface, from water-attracting surface to water-repellent surface, is related by CNT processing.
