سال انتشار: ۱۳۹۰

محل انتشار: سومین کنفرانس ملی صنعت نیروگاههای حرارتی

تعداد صفحات: ۵

نویسنده(ها):

Shayan Seif – Ph.D Candidate, Faculty of Chemical Engineering, University of Tehran, Iran,
Ali Asghar Hamidi – Associate Professor of Chemical Engineering, Faculty of Chemical Engineering, University of Tehran,
Mohamadreza Faghedi – M.Sc of Materials Science & Engineering, Quality Manager of Mapna Co

چکیده:

In this article, helically serrated finned tubes, which are generally used in heat recovery steam generator (HRSG) boilers in combined cycle power plants, are experimentallystudied, in order to find their thermal contact resistance (TCR) values in different conditions. Temperature, air velocity and finto-tube bonding extent were the variables and a precise methodology was performed to extract the TCR values from the obtained data. The results showed that TCR decreases byincreasing the air velocity and the bonding extent, but temperature has a negligible effect on it. Moreover, the TCRvalues showed a good consistency in order of magnitude when compared to similar systems studied before