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SPEED-CONTROLLED HEAT PUMPS.

Author(s) : PAUL J., SCHMITT K., STREHL U.

Summary

THE YEAR-ROUND OPERATION OF AN ELECTRICALLY-DRIVEN HEAT PUMP MAY BE SIMULATED BY A COMPUTER, BY USING THE MEASURED PERFORMANCES OF ITS COMPONENTS (COMPRESSOR, EVAPORATOR, CONDENSER, EXPANSION VALVE). SIMULATION MAY ALLOW FOR THERMAL CAPACITY AND ELECTRIC POWER AND ECONOMIC DATA. THE AUTHOR STUDIED SPEED CONTROL FOR MONOVALENT AND BIVALENT HEAT PUMPS AND IN THE CASE OF THE STEP AND SMOOTH CONTROL OF SPEED IN TERMS OF EVAPORATOR SURFACE AREA. THE RESULTS SHOW THAT IF SPEED IS CONTROLLED IN THE RATIO 1 TO 4, THE IMPROVEMENT OF PERFORMANCE IS 12%, WHICH IS UNSATISFACTORY. IMPROVEMENTS ARE POSSIBLE BY AN OPTIMISATION STUDY AND IF THE BUILDING IS INSULATED. AT PRESENT, THE COST OF CONTROL IS TOO HIGH TO BE ADVANTAGEOUS.

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Pages: 1981-5

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Details

  • Original title: SPEED-CONTROLLED HEAT PUMPS.
  • Record ID : 1983-1507
  • Languages: English
  • Source: Heat pumps and air circulation in conditioned spaces.
  • Publication date: 1983
  • Document available for consultation in the library of the IIR headquarters only.

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