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A study on the exergy and energy analysis of geothermal heat pumps for high-rise office buildings.

Author(s) : LIU S., LIU J., ZHU N.

Summary

This paper analyzes an air-conditioning system of an existing project in Tianjin, China, which uses geothermal and water loop heat pumps (GWLHP) in winter. The concept of exergy has been introduced to establish a universal efficiency evaluation standard for this kind of geothermal heat pump system. In this paper, the energy and exergy analysis of the GWLHP system in the whole winter were conducted together. The authors compared its primary energy consumption with other systems that using hot water from the city heating network. An exergy assessment and modelling of the geothermal heat pump system were studied as well. Basing on the analysis above, the exergy efficiency value of the GWLHP is 48.45%, and the geothermal heat pump system can save more energy enormously than normal heating system with heating network. This study also analyzed its economical and technical feasibilities by using geothermal heat as the sole heating source.

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Pages: ICR07-E2-1311

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Details

  • Original title: A study on the exergy and energy analysis of geothermal heat pumps for high-rise office buildings.
  • Record ID : 2008-0905
  • Languages: English
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/08/21

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