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MODELLING AND SIMULATION OF THE CRAWLSPACE HEAT PUMP.

Author(s) : WASSERMAN D. M., REID R. L.

Summary

A WAY TO INCREASE THE EFFICIENCY OF HEAT PUMPS IS TO USE THE SOIL BENEATH THE CRAWLSPACE AS A HEAT SOURCE OR HEAT SINK. A MODEL OF HEAT TRANSFER WAS DEVELOPED, AND A COMPUTER PROGRAM WRITTEN TO CALCULATE TIME DEPENDENT SOIL AND AIR TEMPERATURES IN A CRAWLSPACE CONTAINING A HEAT PUMP. VARIOUS ASSUMPTIONS REGARDING VAPOUR DIFFUSION IN SOILS WERE MADE. THIS MODEL, TOGETHER WITH THE SEASONAL PERFORMANCE FACTOR HEAT PUMP MODEL, WAS COMPARED WITH DATA FROM AN INSTRUMENTED HOUSE AND THEN USED TO PREDICT HEATING SEASON CRAWLSPACE HEAT PUMP PERFORMANCE. A SINGLE PASS SYSTEM IS NOT SUITED FOR WINTER OPERATION ; ADDING INSULATION TO THE WALLS OF AN ABOVE-GRADE CRAWLSPACE ONLY IMPROVES PERFORMANCE SLIGHTLY.

Details

  • Original title: MODELLING AND SIMULATION OF THE CRAWLSPACE HEAT PUMP.
  • Record ID : 1985-2163
  • Languages: English
  • Publication date: 1984
  • Source: Source: ASHRAE Trans.
    vol. 90; n. 1A; 312-334; 15 fig.; 3 tabl.; 16 ref.; append.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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