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Ground-source heat pumps: overcoming market and technical barriers.

Author(s) : HALOZAN H.

Summary

Ground-source heat pumps (GSHP) gain importance world-wide with respect to energy efficiency and the potential in reducing CO2 emissions in heating and cooling operation. Groundsource heat pumps cover the heat sources/heat sinks ground (heat is directly extracted/removed from/to the ground), groundwater (heat is extracted/removed from/to groundwater), and surface water (heat is extracted/removed from/to surface water like ponds, lakes, or the sea). The ground acting as a seasonal store offers the possibility of damping the effects of the outside air temperature fluctuations, in colder climates it enables monovalent heating operation of the heat pump, and for utilities it is - compared with outside air operated heat pumps - a tool for demand side management measures. In the case of large systems the ground can be additionally used as a store linked to the system, wich offers in the case of heating and cooling operation at least improved conditions at the beginning of both the heating and the cooling season. Additionally, direct-cooling without heat pump operation becomes possible. The potential for reducing world-wide CO2 emissions assuming a 30% share of heat pumps in the building sector using technology presently available is about 6% of the total world-wide CO2 emissions. With advanced future technologies in power generation, in heat pumps and in integrated control strategies up to 16% seem to be possible. Therefore, heat pumps, and especially ground-source heat pumps, are one of the key technologies for energy conservation, increasing the efficiency and reducing greenhouse gas emissions.

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Pages: 67-74

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Details

  • Original title: Ground-source heat pumps: overcoming market and technical barriers.
  • Record ID : 30001138
  • Languages: English
  • Source: Sources/sinks Alternative to the Outside Air for Heat Pump and Air-conditioning Techniques (Alternative Sources - AS), Padua, Italy, April 5-7, 2011. / International Sorption Heat Pump Conference (ISHPC11), Padua, Italy, April 6-8, 2011.
  • Publication date: 2011/04/05

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