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A PROTOTYPE DIRECT-EXPANSION SOLAR HEAT PUMP SYSTEM.

Author(s) : SHINOBU Y., MATSUKI K., YOSHIKAWA M.

Summary

THE PAPER PRESENTS A PROTOTYPE FOR A DIRECT EXPANSION SOLAR HEAT PUMP SYSTEM FOR DOMESTIC WATER HEATING AND ITS PERFORMANCE DATA. THE PROTOTYPE SYSTEM CONSISTS OF REFRIGERANT-FILLED SOLAR COLLECTORS AS AN EVAPORATOR, A VARIABLE-CAPACITY COMPRESSOR, A DOUBLE-WALL COPPER TUBE HEAT EXCHANGER AS A CONDENSER, AN ELECTRIC EXPANSION VALVE, AND A THERMAL STORAGE TANK. RESULTS OF INDOOR EXPERIMENTS WITH A SOLAR SIMULATOR IN AN ENVIRONMENTAL ROOM SHOW THAT THE SYSTEM CAN HEAT WATER UP TO 328 K (55 DEG C) WITH A HIGH COP OF 3. 7-4.2 THROUGHOUT THE YEAR. OUTDOOR FIELD TESTS RESULTED IN COP OF 3.1-3.7 FOR THE FOUR SYSTEMS TESTED THROUGHOUT THE YEAR.

Details

  • Original title: A PROTOTYPE DIRECT-EXPANSION SOLAR HEAT PUMP SYSTEM.
  • Record ID : 1988-0318
  • Languages: English
  • Publication date: 1987
  • Source: Source: ASHRAE Trans.
    vol. 93; n. 1; 615-625; 12 fig.; 6 tabl.; 3 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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