DocumentCode :
629227
Title :
Experimental determination of thermal contact resistance of helically serrated finned tubes with different bonding extents
Author :
Seif, Simon ; Hamidi, Ali Asghar ; Faghedi, Mohamadreza
Author_Institution :
Fac. of Chem. Eng., Univ. of Tehran, Tehran, Iran
fYear :
2011
fDate :
18-19 Oct. 2011
Firstpage :
1
Lastpage :
5
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 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.
Keywords :
boilers; bonding processes; combined cycle power stations; contact resistance; heat recovery; pipes; thermal resistance; HRSG; TCR; air velocity; combined cycle power plant; fin-to-tube bonding extent; heat recovery steam generator boiler; helically serrated finned tube; thermal contact resistance; Bonding; Electron tubes; Heat transfer; Heating; Temperature distribution; Temperature measurement; Thermal resistance; bonding; heat transfer; serrated finned tubes; thermal contact resistance;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Thermal Power Plants (CTPP), 2011 Proceedings of the 3rd Conference on
Conference_Location :
Tehran
Print_ISBN :
978-1-4799-0591-1
Type :
conf
Filename :
6576983
Link To Document :
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