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GROUND-COUPLED HEAT PUMPS WITH LOW TEMPERATURE HEAT STORAGE: SOME SWEDISH EXPERIENCES.

Author(s) : FRANCK P., BERNTSSON T.

Summary

A LARGE RESEARCH PROGRAM IN THE FIELD OF SOLAR-COUPLED HEAT PUMPS WITH SEASONAL STORAGE IN THE GROUND, USING VERTICAL PIPES TO A DEPTH OF 10-40 M, HAS BEEN GOING ON FOR SEVERAL YEARS IN SWEDEN. IN THIS PAPER, SOME MAIN RESULTS FROM TWO EXPERIMENTAL PLANT ARE PRESENTED. AS WELL, RESULTS FROM A TECHNICAL-ECONOMICAL OPTIMIZATION STUDY ARE DISCUSSED. IN THESE CALCULATIONS, COMPARISONS ARE MADE AMONG SYSTEMS USING AMBIENT-AIR NATURAL CONVECTION HEAT EXCHANGERS, LOW-TEMPERATURE SOLAR COLLECTORS, AND < CONVENTIONAL > AMBIENT-AIR HEAT PUMPS WITHOUT STORAGE. THE DIFFERENCES IN ECONOMY BETWEEN SYSTEMS WITH SOLAR COLLECTORS AND WITH NATURAL CONVECTION HEAT EXCHANGERS ARE SMALL. HOWEVER, SYSTEMS WITH SOLAR OR AMBIENT-AIR HEAT COLLECTORS AND STORAGE SYSTEMS CANNOT TODAY COMPETE ECONOMICALLY WITH AMBIENT-AIR HEAT PUMPS WITHOUT STORAGE SYSTEMS.

Details

  • Original title: GROUND-COUPLED HEAT PUMPS WITH LOW TEMPERATURE HEAT STORAGE: SOME SWEDISH EXPERIENCES.
  • Record ID : 1987-0295
  • Languages: English
  • Publication date: 1985
  • Source: Source: ASHRAE Trans.
    vol. 91; n. 2B; 1285-1296; 8 fig.; 1 tabl.; 6 ref.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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