Numerical Study on the Effect of Tube Rows on the Heat Transfer Characteristic of Dimpled Fin | Zendy

Wu Xuehong | Zendy; Feng Lihua | Zendy; Liu Dandan | Zendy; Meng Hao | Zendy; Lu Yanli | Zendy

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Numerical Study on the Effect of Tube Rows on the Heat Transfer Characteristic of Dimpled Fin

Author(s) -

Wu Xuehong,

Feng Lihua,

Liu Dandan,

Meng Hao,

Lu Yanli

Publication year - 2014

Publication title -

advances in mechanical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.318

H-Index - 40

ISSN - 1687-8132

DOI - 10.1155/2014/637052

Subject(s) - heat exchanger , fin , row , tube (container) , materials science , heat transfer , nusselt number , heat transfer enhancement , mechanics , thermodynamics , concentric tube heat exchanger , composite material , heat transfer coefficient , physics , computer science , reynolds number , turbulence , database

The dimpled fin has excellent heat transfer performance and has attracted a lot of attention to apply on the fin and tube heat exchanger. A study presents to investigate the effects of number of tube rows on the air-side heat transfer characteristics of dimpled fin for velocity ranging from 1 to 3 m/s. The Q /Δ P and Q /((Δ P × V )) are used to evaluate the heat transfer performance of the heat exchanger. The results show that the dimpled arrangement can change the mainstream direction, increase the disturbance, and enhance the heat transfer. With the increase of the number of tube rows, the average Nusselt number decreases and Q /Δ P and Q /((Δ P × V )) increase gradually. Compared with the multipipe tube rows, the performance of two-row tube is better.

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