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Performance of smoke reservoirs protected by mechanical exhaust.

Author(s) : POH W., MIRBAGHERI M.

Type of article: Article

Summary

The Building Code of Australia (BCA) requires smoke exhaust systems to be designed such that the smoke layer is contained within the smoke reservoirs. Parametric studies using computational fluid dynamics (CFD) analyses reveal that, with the BCA prescribed smoke exhaust rates, the smoke layer cannot be contained within reservoirs having a BCA prescribed minimum depth of 0.5 m. For smoke containment, the necessary depths are significantly larger. Further studies also show that, to contain the smoke layer within a 0.5 m deep reservoir, the smoke exhaust rate will need to be significantly higher than that prescribed by the BCA and is unlikely to be practical. An iterative procedure will likely be required to determine the appropriate combination of smoke reservoir depth and smoke exhaust rate to achieve the BCA specified performance. The results presented in this paper will provide useful guidance for the choice of initial trial values in the design process.

Details

  • Original title: Performance of smoke reservoirs protected by mechanical exhaust.
  • Record ID : 2009-2461
  • Languages: English
  • Source: EcoLibrium - vol. 8 - n. 7
  • Publication date: 2009/08

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