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SOME PROBLEMS WITH THE DEFROSTING OF HEAT PUMP EVAPORATORS.

QUELQUES PROBLEMES DU DEGIVRAGE DES EVAPORATEURS DES POMPES A CHALEUR.

Author(s) : BLECHA S., SMUTNY F.

Summary

AN ANALYSIS OF THE YEAR-ROUND FREQUENCY OF OUTSIDE AIR TEMPERATURES FOR A DESIGN REGION OF 261 K (-12 DEG C) ENABLES ONE TO CONCLUDE THAT THE BIVALENCE TEMPERATUREFOR A HEAT PUMP FOR HEATING PURPOSES SHOULD BE AROUND 273 K (0 DEG C). THIS RESULTS IN THE NECESSITY OF DEFROSTING EVAPORATOR. BY DERIVING THERMODYNAMIC EQUATIONS, THE ENERGY NEEDED FOR DEFROSTING AN EVAPORATOR IS DETERMINED. A GRAPHICALDETERMINATION OF THE EVAPORATOR DEFROSTING TIME AT A CONSTANT HEAT LOAD IS PRESENTED. THE OPTIMUM HEATING POWER TO DEFROST A HEAT PUMP EVAPORATOR IS OUTLINED IN THE CONCLUSIONS.

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Pages: 1984-2

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Details

  • Original title: QUELQUES PROBLEMES DU DEGIVRAGE DES EVAPORATEURS DES POMPES A CHALEUR.
  • Record ID : 1986-2454
  • Languages: French
  • Source: Advances in refrigeration and heat pump technology achieved by the application of micro-electronics and the control of systems by micro-electronic devices.
  • Publication date: 1984/09/03
  • Document available for consultation in the library of the IIR headquarters only.

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