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THE USE OF REFRIGERANT MIXTURES IN AIR-TO-AIR HEAT PUMPS.

Author(s) : COOPER W. D., BORCHARDT H. J.

Type of article: Article

Summary

THE INHERENT DISADVANTAGE OF AN AIR-TO-AIR HEAT PUMP IS THAT THE COMPRESSOR CAPACITY, AND HENCE THE ULTIMATE HEATING CAPACITY, DECREASES WITH THE FALL IN EVAPORATION TEMPERATURE BROUGHT ABOUT BY LOW AMBIENT TEMPERATURE.IN AN IDEAL SITUATION, THE REFRIGERANT COULD BE CHANGED FOR WINTER OPERATION TO ONE WHICH WOULD BE MORE SUITABLE TO THE PERFORMANCE REQUIRED FROM THE COMPRESSOR FOR THE LARGER HEAT SINK TO HEAT SOURCE TEMPERATURE DIFFERENCE. TO GAIN SOME OF THE BENEFITS OF SUCH A CHANGE THE AA. EXPERIMENTED WITH A MIXTURE OF REFRIGERANTS, R13 B 1 AND R12, IN A CIRCUIT IN WHICH AN ACCUMULATOR FOLLOWED THE EVAPORATOR. WHICH AN ACCUMULATOR FOLLOWED THE EVAPORATOR. WHEN THE DUTY IS LOW, LIQUID TENDS TO SPILL FROM THE EVAPORATOR AND THE VAPOUR DRAWN FROM THE ACCUMULATOR LIQUID IS RICHER IN THE COMPONENT MORE SUITED TO WINTER OPERATION. EXPERIMENTAL RESULTS CONFIRMED A MATHEMATICAL MODEL. D.W.H.

Details

  • Original title: THE USE OF REFRIGERANT MIXTURES IN AIR-TO-AIR HEAT PUMPS.
  • Record ID : 1981-1324
  • Languages: English
  • Publication date: 1980/11
  • Source: Source: Refrig. Air Cond.
    vol. 83; n. 992; 29-32; 5 fig.; 2 tabl.; 3 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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