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Experimental study of interzonal natural convection through an aperture

Author

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  • Riffat, S.B.
  • Kohal, J.S.

Abstract

The work was concerned with measuring natural convection through an aperture between two zones in an environmental chamber. Airflow rates between the two zones were measured using a tracer-gas decay technique, and the temperature at the centre of each zone was measured using thermocouples. Zone 1 was heated to various temperatures in the range 18-38°C using thermostatically controlled heaters. Zone 2 was unheated. A multipoint sampling unit was used to collect a tracer-gas sample from each zone. The concentration of SF6 tracer was measured using an infra-red gas analyzer. The heat and mass flow rates between the two zones were calculated from the tracer-gas concentrations and temperature differences. Results were compared with values predicted by existing algorithms for two-zone enclosures. The mass flow rate through the aperture was found to be a function of the temperature difference between the two zones.

Suggested Citation

  • Riffat, S.B. & Kohal, J.S., 1994. "Experimental study of interzonal natural convection through an aperture," Applied Energy, Elsevier, vol. 48(4), pages 305-313.
    • Handle: RePEc:eee:appene:v:48:y:1994:i:4:p:305-313
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