Abstract
With the aim of enhancing the heat transfer in a heat exchanger made or silicon carbide (SiC),nanostructure formed by carbon nano tubes (CNT) were produced on SiC substrate by surface decomposition of SiC. The CNT nanostructure suriaces or hydrophobicity and hyarophilicitv were made to investigate the surface wettability. Their heat transfer characteristics were evaluated. Although the CNT nanostructure surfaces of hydrophilicity showed the heat transfer enhancement, it was much smaller than previous reports. It is thought that representative length of nanostructure influenced the heat transfer enhancement.
