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PRIMARY EFFLUENT AS A HEAT SOURCE FOR HEAT PUMPS.

Author(s) : PHETTEPLACE G. E., UEDA H. T.

Summary

WATER-SOURCE HEAT PUMPS USE PRIMARY EFFLUENT AS A SOURCE OF HE AT. INTERMEDIATE LOOPS CIRCULATING AN ETHYLENE GLYCOL/WATER MIXTURE ARE USED TO TRANSFER HEAT FROM THE EFFLUENT HEAT EXCHANGERS TO THE HEAT PUMP EVAPORATORS. IN ONE CASE, HEAT EXCHANGE IS ACCOMPLISHED VIA AN EMBOSSED PANEL HEAT EXCHANGER IMMERSED DIRECTLY IN THE EFFLUENT. IN THE OTHER CASE, THE EFFLUENT HEAT EXCHANGER IS A PLATE-AND-FRAME UNIT. WHEN FULLY OPERATIONAL, THIS UNIT HAS ACHIEVED AN AVERAGE COP OF 2.6. SHORT CYCLING DUE TO AN OVER-SIZED HEAT PUMP AND AN UNEXPECTED POWER LOSS SIGNIFICANTLY REDUCED THE COP OF THE OTHER UNIT, WHICH HAD AN AVERAGE COP OF 2.3. FOULING OF THE HEAT EXCHANGERS BY THE EFFLUENT HAS NOT BEEN A PROBLEM TO DATE.

Details

  • Original title: PRIMARY EFFLUENT AS A HEAT SOURCE FOR HEAT PUMPS.
  • Record ID : 1990-1248
  • Languages: English
  • Publication date: 1989
  • Source: Source: ASHRAE Trans.
    vol. 95; n. 1; 141-146; 12 fig.; 1 tabl.; 4 ref.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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