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http://dx.doi.org/10.5855/ENERGY.2014.23.3.191

A Study on Condensation Heat Transfer in Air Pre-heating Heat Exchanger using Hydrophilic Surface  

Park, Jae Won (Dept. of Mechanical Engineering, Graduate School of Kookmin Univ.)
Hwang, Sueng Sik (Dept. of Mechanical System Engineering, Kookmin Univ.)
Seok, Sung Chul (Dept. of Mechanical Engineering, Graduate School of Kookmin Univ.)
Shin, Dong Hoon (Dept. of Mechanical Engineering, Graduate School of Kookmin Univ.)
Chung, Tae Yong (Dept. of Mechanical System Engineering, Kookmin Univ.)
Son, Sueng Gil (Kyung Dong Navien)
Publication Information
Journal of Energy Engineering / v.23, no.3, 2014 , pp. 191-197 More about this Journal
Abstract
To increase the heat transfer rate of the air pre-heating heat exchanger used for the condensing boiler, We investigated condensation heat transfer coefficients through plasma surface treatment. The hydrophilic surface showed about 10% increase in heat transfer rate than original plate. It shows that Shah correlation can be used to predict the condensation heat transfer coefficient on the original surface within 10% error range after the compatison between Shah correlation and the condensation heat transfer coefficients measured on the hydrophilic surface and original surface. Therefore, we have shown that Shah correlation is available when designing the air pre-heating heat exchanger using the original surface in this study.
Keywords
Pre-heating heat exchanger; Condensation heat transfer; Hydrophilic;
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