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Analysis of the Second law of Thermodynamics in helical tubes with laminar flow subjected to the constant wall temperature

Credit to Download: 1 | Page Numbers 8 | Abstract Views: 119
Year: 2017
COI code: FFHMT04_014
Paper Language: English

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Authors Analysis of the Second law of Thermodynamics in helical tubes with laminar flow subjected to the constant wall temperature

Mahya Mohammadi - PhD candidate of Mechanical Engineering, KNT University of Technology, Tehran, Iran.
Cyrus Aghanajafi - Professor, faculty of Mechanical Engineering, KNT University of Technology, Tehran, Iran
Seyedeh Zahra Mikaeeli - PhD student of Mechanical Engineering, KNT University of Technology, Tehran, Iran

Abstract:

Helically coiled tubes are efficient heat transfer equipments due to their compact size and high heat transfer performance in comparison with straight tube counterparts. The performance of helically coiled tube with fully developed laminar flow and constant wall temperature has been investigated by calculating the entropy generation and the ratio of pumping power to heat transfer rate, analytically. Correlations have been used for Nusselt number and friction factor. The variation of the dimensionless entropy generation and pumping power to heat transfer rate ratio versus modified Stanton number and dimensionless temperature difference have been proposed according to the fact that the dimensionless entropy generation and pumping power to heat transfer rate ratio should be minimized to achieve an appropriate performance.

Keywords:

helically coiled tube, laminar flow, constant temperature, entropy generation

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https://www.civilica.com/Paper-FFHMT04-FFHMT04_014.html
COI code: FFHMT04_014

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Mohammadi, Mahya; Cyrus Aghanajafi & Seyedeh Zahra Mikaeeli, 2017, Analysis of the Second law of Thermodynamics in helical tubes with laminar flow subjected to the constant wall temperature, 4th National Conference on Heat and Mass Transfer Fluid Flow, تهران, موسسه آموزش عالي جامي, https://www.civilica.com/Paper-FFHMT04-FFHMT04_014.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Mohammadi, Mahya; Cyrus Aghanajafi & Seyedeh Zahra Mikaeeli, 2017)
Second and more: (Mohammadi; Aghanajafi & Mikaeeli, 2017)
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