An Experimental Study of Condensation Heat Transfer Characteristics on a Vertical Condensing Surface with the Superhydrophilic Property

抄録

In recent years there has been a demand for the development of highly efficient heat exchangers for the purpose of saving energy and resources. In the surface heat exchanger with a condensation phenomenon, promoting the condensation heat transfer includes the superhydrophilic and superhydrophobic processing etc. of the condensing surface. In this study, the condensation heat transfer characteristics on the vertical condensing surface coated in the titanium dioxide (TiO₂) photocatalyst which has the superhydrophilic property are investigated. Then, the condensation experiment of steam to the condensing surface coated in the TiO₂ photocatalyst is carried out. As a result, we found that the condensation heat transfer was promoted about 51% when the condensing surface was coated in the TiO₂ photocatalyst.