IIR document

THE INFLUENCE OF THE EVAPORATOR FIN SPACING ON DEFROSTING CYCLES AND FRONT VELOCITY IN ELECTRICALLY DRIVEN AIR BASED HEAT PUMPS.

Author(s) : NESJE O. M., BYGGSTOYL B.

Summary

THE AUTHORS PRESENT A 200 KILOWATT AIR-WATER HEAT PUMP. THEY CONSIDER A FLOODED EVAPORATOR WITH FINNED TUBES. THE RELATIONSHIPS BETWEEN FIN SPACING, SIZE, AIR FLOW AND COP ARE STUDIED. INCREASING AIR VELOCITY MAKES IT POSSIBLE TO DECREASE THE EVAPORATOR SIZE. THIS RESULTS IN AN INCREASE IN OPERATING COSTS AND A DECREASE IN INVESTMENT COSTS. THE FACTORS REQUIRED FOR AN ECONOMIC EVALUATION OF EVAPORATOR SIZE ARE ICSE. THE EFFECT OF FIN SPACING DURING DEFROSTING IS ALSO STUDIED. DEFROSTING METHODS USING THE LEAST ENERGY ARE PRESENTED. THE ANALYSIS IS BASED ON TEST RESULTS FOR AIR COOLERS WITH FIN SPACINGS OF 3.5 AND 8 MM.

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Pages: 417-422

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Details

  • Original title: THE INFLUENCE OF THE EVAPORATOR FIN SPACING ON DEFROSTING CYCLES AND FRONT VELOCITY IN ELECTRICALLY DRIVEN AIR BASED HEAT PUMPS.
  • Record ID : 1988-1620
  • Languages: English
  • Source: Development in refrigeration, refrigeration for development. Proceedings of the XVIIth international Congress of Refrigeration.
  • Publication date: 1987/08/24
  • Document available for consultation in the library of the IIR headquarters only.

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