Experimental Determination of Thermal Contact Resistance of Helically Serrated Finned Tubes with Different Bonding Extents
Publish Year: 1390
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
POWERPLANT03_064
تاریخ نمایه سازی: 22 مرداد 1391
Abstract:
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
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Authors
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