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DEVELOPMENT OF HIGH HEAT UTILIZATION HOT WATER SUPPLY SYSTEM BY COMBINED HEAT PUMP AND BOILER SYSTEM. PILOT PLANT TEST RESULTS.

[In Japanese. / En japonais.]

Author(s) : TANIGUCHI H.

Type of article: Article

Summary

A NEW HIGH EFFICIENCY HEAT PUMP SYSTEM HAS BEEN DESIGNED AND TESTED FOR SUPPLYING HOT WATER FOR DISTRICT HEATING. THE SYSTEM IS DRIVEN BY A STEAM EXPANDER AND HAS A CAPACITY OF 920 KILOWATT. THE TEST RESULTS SHOW THAT THE HEAT UTILIZATION FACTOR UNDER 67%-PARTIAL-LOAD CONDITION IS LOWER ONLY BY 10% THAN THE ONE UNDER FULL LOAD. THE EFFECTS ON THE FACTOR ARE ALSO MEASURED FOR SEVERAL PARAMETERS: THE TEMPERATURE CHANGE IN SUPPLY AND RETURNED WATER AND IN LOW TEMPERATURE HEAT SOURCE AND THE EFFECTS OF NEWLY INCORPORATED POWER RECOVERY EXPANDER, FRICTION HEAT GENERATION AT ROTATING MACHINERY AND THE HEAT LOSS FROM PIPING AND MAIN COMPONENTS.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1989-0300
  • Languages: Japanese
  • Source: Transaction of the Society of Heating, Air-conditioning and Sanitary Engineers of Japan - n. 36
  • Publication date: 1988
  • Document available for consultation in the library of the IIR headquarters only.

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