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Stack Effect Correlation for Rooftop Solar Chimneys

[+] Author Affiliations
Mohammad H. Naraghi, Romain Cellard du Sordet

Manhattan College, Riverdale, NY

Paper No. IMECE2011-63085, pp. 801-808; 8 pages
  • ASME 2011 International Mechanical Engineering Congress and Exposition
  • Volume 4: Energy Systems Analysis, Thermodynamics and Sustainability; Combustion Science and Engineering; Nanoengineering for Energy, Parts A and B
  • Denver, Colorado, USA, November 11–17, 2011
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5490-7
  • Copyright © 2011 by ASME


A correlation for calculating flow rate of air in solar chimneys is developed. This correlation is based on the variables that have the most direct influence on the volume flow rate of air through a solar chimney. These variables include: the spacing between the absorbing wall and glass (chimney depth), absorbing wall temperature, inlet air temperature and height of chimney. The slope of the rooftop solar chimney, for the range of typical roofs (30°–60°) has very little influence on the flow rate. The solution of energy balance equations for various components of the solar chimney along with the newly developed correlation shows a significant improvement of the results compared to the existing stack effect correlation.

Copyright © 2011 by ASME
Topics: Solar energy



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