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Flow and separation characteristics of three-dimensional negatively buoyant wall jets.

Author(s) : HASSANI A. V., KIRKPATRICK A., SFORZA P. M.

Type of article: Article

Summary

With a cold-air distribution system, both the supply air temperature and flow rate are lower than in conventional systems for the same cooling load. The cold air is supplied to a zone at temperatures between 3 et 9 deg C instead of the conventional 13 deg C. As the building's ventilation and cooling airflow supply temperature and flow rate are reduced below the conventional values, indoor thermal environment considerations become increasingly important. An analysis using integral forms of the momentum and energy equations is presented for determination of the separation point of buoyant turbulent wall jets. The analysis shows that the separation point is a function of the outlet Richardson number in addition to the geometry of the outlet diffuser or nozzle.

Details

  • Original title: Flow and separation characteristics of three-dimensional negatively buoyant wall jets.
  • Record ID : 1998-0459
  • Languages: English
  • Source: HVAC&R Research - vol. 3 - n. 2
  • Publication date: 1997/04
  • Document available for consultation in the library of the IIR headquarters only.

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