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Title: A review of natural convective heat transfer correlations in rectangular cross-section cavities and their potential applications to compound parabolic concentrating (CPC) solar collector cavities
Authors: Singh, H
Eames, PC
Keywords: Heat transfer;Solar;Compound Parabolic Concentrator (CPC);Natural convection;Rayleigh number;Nusselt number
Issue Date: 2011
Publisher: Elsevier
Citation: Applied Thermal Engineering, 31(14-15), 2186 - 2196, 2011
Abstract: Natural convective heat transfer in cavities is a complex function of cavity shape, aspect ratio, boundary conditions at the walls and the properties of the fluid contained within the enclosure. Considerable research into natural convection in regular shaped cavities, such as those of rectangular, square cross-section, or cylindrical annuli has been undertaken. Knowledge is, however, more limited relating to natural convective heat transfer in CPC solar collector cavities. Accurate knowledge of the variation in local convective heat transfer coefficients at the different CPC cavity components would facilitate to the design of suitable convection suppression devices, for example baffles at specific locations within the cavity, substantially reducing convective heat transfer and thus improving the performance of CPC solar collectors. From analysis of the correlations developed for regularly shaped enclosures it is concluded that the employment of these correlations to describe natural convection in CPC solar collector cavities can be misleading.
Description: This is the post-print version of the final paper published in Applied Thermal Engineering. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. Copyright @ 2011 Elsevier B.V.
ISSN: 1359-4311
Appears in Collections:Mechanical and Aerospace Engineering
Dept of Mechanical Aerospace and Civil Engineering Research Papers

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