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      Measurement of natural convection heat transfer in an attic shaped enclosure

      Anderson, Timothy Nicholas; Duke, Mike; Mike, James
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      MEASUREMENT OF NATURAL.pdf
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      Anderson, T. N., Duke, M. & Carson, J. K. (2008). Measurement of natural convection heat transfer in an attic shaped enclosure. Paper presented at 3rd International Solar Energy Society Conference - Asia Pacific Region incorporating the 46th Australia New Zealand Solar Energy Society Conference. Sydney, Australia; 25-28 November, 2008.
      Permanent Research Commons link: https://hdl.handle.net/10289/3671
      Abstract
      Heat transfer by natural convection in triangular enclosures is an area of significant importance in applications such as the design of greenhouses, attics and solar water heaters. However, given its significance to these areas it has not been widely examined. In this study, the natural convection heat transfer coefficients for air in an attic shaped enclosure were determined for Grashof Numbers over the range of 10⁷ to 10⁹. It was found that the measured heat transfer coefficients could be predicted to within 5% by Ridouane and Campo’ (2005) equation (Eqn. 1) for natural convection in a triangular enclosure previously developed for Grashof Numbers in the range 10⁵ and 10⁶.

      Nu= 0.286A⁻⁰•²⁸⁶ Gr¼ (1)

      As such, it is suggested that this equation may be suitable for predicting the natural convection heat transfer coefficients in full scale attic enclosures.
      Date
      2008
      Rights
      This article has been presented at 3rd International Solar Energy Society Conference - Asia Pacific Region incorporating the 46th Australia New Zealand Solar Energy Society Conference. Sydney, Australia; 25-28 November, 2008. Used with permission.
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      • Science and Engineering Papers [3124]
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