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Geothermal Research and Tech IEA

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Geothermal Research and Tech IEA ( geothermal-research-and-tech-iea )

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Figure 18.3 Number of installations of brine/water heat pumps for the period 1992-2010. The number of installed brine/water heat pumps is shown in Figure 18.3 above. The yearly variation reflects the prices of electricity where 2003 was a dry year with low hydro power production and 2005 wet year. There is a clear trend with increasing interest in GSHP, but the Norwegian heat pump market is still dominated by air/air heat pumps. In 2008 more than 90% of the total heat pumps installed were air/air heat pumps and only 4% GSHP. Locality Oslo Airport Akershus Hospital Nydalen Business Park Ullevål Stadion Post Terminal Building IKEA Asker Vestfold Univ College Ericsson Asker Alnafossen Office Ground or Water Temperature (°C) 6.0 6.5 8.0 7.0 6.5 7.0 8.0 7.0 7.0 Heat Pump Rating Or Capacity (kW) 8,100 8,000 228 V 6,000 180 V 4,000 120 V 4,000 90 V 1,200 86 V 800 70 V 800 56 V 1,500 52 V Table 18.2 Large GSHP systems installed in Norway. Number of Units Type 18 W W: Water source (well or lake) V: Vertical ground Today, about 350 larger GSHP systems for public/commercial buildings and multi-family dwellings are installed including some of Europe‘s largest GSHPs with borehole heat exchangers 203

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