Gnielinski method in calculating the heat transfer coefficient for metallic solar tower absorber

Zulfattah, Z. M and Rafeq, Saleman Abdul and Shukri, Z. M. and Ridhwan, J. and Hanafi, M. H. M and Norain, I and Huzaimi, Z. N. and Najib, A. M. (2013) Gnielinski method in calculating the heat transfer coefficient for metallic solar tower absorber. In: The Malaysian International Tribology Conference 2013, MITC2013, 18 - 20 NOVEMBER 2013, KOTA KINABALU, SABAH. (Unpublished)


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This work is done to calculate the heat transfer coefficient of metallic wire mesh to air in an open volumetric thermal absorber. It is aimed to replace the actual ceramic with metallic which latter has better thermal properties in order to increase the efficiency of the concentrating solar power plant. The calculation of the heat transfer coefficient from porous wire structure to the air has been conducted to pursue the purpose. The structure that has been chosen is a set of metallic wires with aligned and shifted configurations. The variations of wire diameter together with various porosities from 0.10 to 0.50 have been calculated to obtain the best configuration for the absorber. The flow characteristic within the mesh structure in terms of Reynolds number and its relationship with the heat transfer coefficient has been obtained. The condition on mass flow rate of heat transfer medium and other aspects which influence the heat transfer are also discussed.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Mechanical Engineering > Department of Structure and Materials
Date Deposited: 27 Dec 2013 07:32
Last Modified: 28 May 2015 04:11
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