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IMPACT OF THERMAL STORAGE ON CLOSED-LOOP HEAT PUMP SYSTEM PERFORMANCE.

Author(s) : HOWELL R. H., ZAIDI J. H.

Summary

A SIMULATION HAS BEEN CARRIED OUT FOR A BUILDING USING A CLOSED-LOOP HEAT PUMP HVAC SYSTEM WITH VARIOUS QUANTITIES OF THERMAL STORAGE, TANK INSULATION, INTERNAL LOADS, AND GEOGRAPHIC LOCATIONS. THE EFFECT OF WATER STORAGE WAS MORE SIGNIFICANT FOR MILDER LOCATIONS. INCREASES IN INTERNAL LOADS INCREASED COMPRESSOR AND COOLING TOWER LOADS BUT DECREASED SUPPLEMENTARY FUEL REQUIREMENTS; THEY INCREASED TOTAL HVAC LOADS IN WARM CLIMATES. A REDUCTION OF THE WATER LOOP TEMPERATURE RANGE TO 35-13 DEG C FROM 27-21 DEG C DECREASED ENERGYINPUT TO THE COMPRESSORS BY UP TO 6%, BUT INCREASED THE SUPPLEMENTARY FUEL REQUIREMENT. THE ADDITION OF TANK INSULATION SAVED ENERGY FOR COLD AREAS BUT DID NOT APPEAR TO BE ECONOMICAL FOR BUILDINGS IN WARM CLIMATES.

Details

  • Original title: IMPACT OF THERMAL STORAGE ON CLOSED-LOOP HEAT PUMP SYSTEM PERFORMANCE.
  • Record ID : 1991-0835
  • Languages: English
  • Publication date: 1989
  • Source: Source: ASHRAE Trans.
    vol. 95; n. 2; 357-365; 13 fig.; 6 tabl.; 10 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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