Natural Convection In Compound Parabolic Concentrators—A Finite-Element Solution

[+] Author and Article Information
S. I. Abdel-Khalik, H.-W. Li

Nuclear Engineering Department, University of Wisconsin, Madison, Wis.

K. R. Randall

Mechanical Engineering Department, University of Wisconsin, Madison, Wis.

J. Heat Transfer 100(2), 199-204 (May 01, 1978) (6 pages) doi:10.1115/1.3450781 History: Received November 21, 1977; Online August 11, 2010


Natural convection heat transfer coefficients between absorber surfaces and cover plates for vertically oriented two-dimensional compound parabolic concentrators (CPC) are evaluated using finite-element techniques. Values of the critical Rayleigh number for different concentrations (2 < C < 10) with 1/3, 2/3, and full CPC heights are determined. Generalized charts for estimating the average absorber plate Nusselt number as a function of Rayleigh number and concentration for both full and truncated CPC cavities are given. The results are useful for evaluating the covective loss coefficients from such collectors.

Copyright © 1978 by ASME
Your Session has timed out. Please sign back in to continue.






Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In