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DESIGN GUIDELINES FOR SPOT COOLING SYSTEMS. PART 2. COOLING JET MODEL AND DESIGN PROCEDURE.

Author(s) : AZER N. Z.

Summary

THE PROCEDURE IS BASED ON USING THE SKIN WETTEDNESS AS THE HEAT STRESS INDEX FOR ASSESSING THE ACCEPTABILITY OF THE INDUSTRIAL ENVIRONMENT. IT RECOGNIZES THE IMPORTANCE OF ALL THE PARAMETERS INVOLVED: THE CLOTHING, ACTIVITY LEVEL, AIR VELOCITY, VAPOUR PRESSURE, AND MEAN RADIANT TEMPERATURE. FOUR EXAMPLES WERE PRESENTED TO DEMONSTRATE THE USE OF THE PROPOSED DESIGN PROCEDURE. THE JET MODEL OF KOESTEL, ADOPTED IN THE PAPER, WAS BASED ON FUNDAMENTAL LAWS OF MOMENTUM AND HEAT DIFFUSION. IT INCLUDES CONSTANTS DERIVED FROM EXPERIMENTAL MEASUREMENTS. THE AUTHOR POINTS OUT THAT THE JET MODEL WAS FOR A COLD JET PROJECTED VERTICALLY DOWNWARD, WHICH IS THE MOST DESIRABLE ARRANGEMENT, BECAUSE WITH A REASONABLE JET OUTLET SIZE, THE WORKER'S ENTIRE BODY CAN BE EXPOSED SYMMETRICALLY TO THE COLD AIR SHOWER.

Details

  • Original title: DESIGN GUIDELINES FOR SPOT COOLING SYSTEMS. PART 2. COOLING JET MODEL AND DESIGN PROCEDURE.
  • Record ID : 1984-1575
  • Languages: English
  • Publication date: 1982
  • Source: Source: ASHRAE Trans.
    vol. 88; n. 1; 97-116; 6 fig.; 10 tabl.; 2 ref.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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