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Heat Transfer and Pressure Drop Correlations for Double-Pass Solar Collector With and Without Porous Media

[+] Author Affiliations
K. Sopian, Adam M. Elradi, Shahrir Abdullah

University Kebangsaan Malaysia, Selangor, Malaysia

K. V. Wong

University of Miami, Coral Gables, FL

Paper No. IMECE2002-39542, pp. 65-74; 10 pages
doi:10.1115/IMECE2002-39542
From:
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Advanced Energy Systems
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Advanced Energy Systems Division
  • ISBN: 0-7918-3626-6 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME

abstract

Correlations of transient heat transfer and pressure drop have been developed for air flowing through the porous media, which packed a double-pass solar air heater. Various porous media are arranged in different porosities to increase heat transfer, area density and the total heat transfer rate. Transient heat transfer experiments indicate that both the heat transfer coefficient and the friction factor are strong functions of porosity. The heat transfer coefficient and the friction factor are also strong functions of the geometrical parameters of the porous media. A test collector was developed and tested indoors by varying the design features and operating conditions using a halogen-lamp simulator as a radiation source. This type of collector can be used for drying and heat applications such as solar industrial processes, space heating and solar drying of agricultural products.

Copyright © 2002 by ASME

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