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Heat Transfer Enhancement Using Helical Pipes

    Ajaj Helal Zgayer

Anbar Journal of Engineering Sciences, 2012, Volume 5, Issue 1, Pages 126-139
10.37649/aengs.2012.41143

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Abstract

The enhancement of laminar forced convection inside helical pipes is studied numerically and compared with plain pipes. The study is achieved numerically using the (Fluent-CFD 6.3.26) software program for solving the governing equations. The heat transfer coefficient and friction coefficient are calculated using the enhancement technique and compared with the plain tube. In this research the factors that affect the enhancement technique using helical pipes are studied, these factors are the ratio of (pitch /pipe length) (SL), Reynolds number and the heat flux applied to the external surface of the pipe.
The results showed that there is an increasing in the heat transfer coefficient is related to the decreasing of (SL), increasing of Reynolds number and heat flux. The performance of the helical pipes is evaluated depending on the calculation of (Enhancement ratio), and it’s found that the enhancement ratio increases as Reynolds number increases and (SL) decreases. It is found that the best enhancement ratio was (200%) at (SR=0.05), (Re=2000),(Heat flux=3000W/m2).The results are compared with the literature and there is a good agreement.
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(2012). Heat Transfer Enhancement Using Helical Pipes. Anbar Journal of Engineering Sciences, 5(1), 126-139. doi: 10.37649/aengs.2012.41143
Ajaj Helal Zgayer. "Heat Transfer Enhancement Using Helical Pipes". Anbar Journal of Engineering Sciences, 5, 1, 2012, 126-139. doi: 10.37649/aengs.2012.41143
(2012). 'Heat Transfer Enhancement Using Helical Pipes', Anbar Journal of Engineering Sciences, 5(1), pp. 126-139. doi: 10.37649/aengs.2012.41143
Heat Transfer Enhancement Using Helical Pipes. Anbar Journal of Engineering Sciences, 2012; 5(1): 126-139. doi: 10.37649/aengs.2012.41143
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This journal is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

This journal is licensed under a Creative Commons Attribution 4.0 International (CC-BY 4.0)

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