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Optimizing energy consumption of a water-loop variable-speed heat pump system.

Author(s) : YUAN S., GRABON M.

Type of article: Article

Summary

Water-loop heat pump (WLHP) systems have been widely used for decades. The most appealing feature of WLHP is its capability of handling simultaneous heating and cooling demands in a building and recovering heat generated from zones in cooling. The typical heat sink and source are cooling tower and boiler. WHLPs discussed in this paper are equipped with a variable-speed compressor; the cooling tower comes with one variable-speed fan; and the boiler has a continuously-adjustable capacity. This paper analyzes how the energy efficiency of individual component responds to variations in loop water temperature; demonstrates that there exists a unique loop-water temperature that minimizes overall energy consumption given a certain building load; proposes a practical strategy to find the optimal temperature in a real-time manner. [Reprinted with permission of Elsevier. Copyright 2011.]

Details

  • Original title: Optimizing energy consumption of a water-loop variable-speed heat pump system.
  • Record ID : 30003614
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 31 - n. 5
  • Publication date: 2011/04
  • DOI: http://dx.doi.org/10.1016/j.applthermaleng.2010.11.012

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