Determination of natural convection heat transfer coefficient over the fin side of a coil system

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2018-11-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
6
677-682
Series
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, Volume 126
Abstract
This paper presents a thermal study to define the appropriate correlations allowing the determination of the convective heat transfer coefficient over large parallel rectangular fins for a permanent magnet synchronous generator coil. For this purpose, an experimental setup is developed for both horizontal and vertical orientations and different input currents. The experimental results are compared with the analytical method, based on correlations proposed in the literature, which are generally limited for a small range of heat sinks. The results show that the analytical calculation based on Jone's correlation for the horizontal case and Tari's correlation for the vertical case, have good agreement with the experimental data. These correlations are experimentally validated for the calculation of the natural convection coefficients of large rectangular fins arrangement too.
Description
Keywords
Empirical correlation, Heat transfer, Natural convection, Plate fin array
Other note
Citation
Ghahfarokhi , P S , Kallaste , A , Vaimann , T , Rassolkin , A & Belahcen , A 2018 , ' Determination of natural convection heat transfer coefficient over the fin side of a coil system ' , International Journal of Heat and Mass Transfer , vol. 126 , pp. 677-682 . https://doi.org/10.1016/j.ijheatmasstransfer.2018.05.071