Experimental Determination of Thermal Contact Resistance of Helically Serrated Finned Tubes with Different Bonding Extents

被引：0
|
作者：
Seif, Shayan [1 ]
Hamidi, Ali Asghar [2 ]
Faghedi, Mohamadreza [3 ]
机构：
[1] Univ Tehran, Fac Chem Engn, Tehran 14174, Iran
[2] Univ Tehran, Fac Chem Engn, Associate Prof Chem Engn, Tehran, Iran
[3] Qual Manager Mapna Co, M Sc Mat Sci & Engn, Tehran, Iran
来源：
2011 PROCEEDINGS OF THE 3RD CONFERENCE ON THERMAL POWER PLANTS (CTPP) | 2011年
关键词：
thermal contact resistance; serrated finned tubes; bonding; heat transfer; HEAT-TRANSFER COEFFICIENT; EXCHANGERS; SPACINGS;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In this article, helically serrated finned tubes, which are generally used in heat recovery steam generator (HRSG) boilers in combined cycle power plants, are experimentally studied, in order to find their thermal contact resistance (TCR) values in different conditions. Temperature, air velocity and fin-to-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 by increasing the air velocity and the bonding extent, but temperature has a negligible effect on it. Moreover, the TCR values showed a good consistency in order of magnitude when compared to similar systems studied before.
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页数：5
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