EKONOMIKA ZASTOSOWANIA SYSTEMÓW GEOTERMALNYCH POMP CIEP£A DLA BUDYNKÓW KOMERCYJNYCH I U ̄YTECZNOCI PUBLICZNEJ THE ECONOMICS OF GEOTHERMAL HEAT PUMP SYSTEMS FOR COMMERCIAL AND INSTITUTIONAL BUILDINGS

Geothermal heat pump (GHP) systems first became popular in the 1950s after the initial introduction of the technology at the Commonwealth Building in Portland, Oregon, in the U.S. Numerous replications of that system, dating from about the same time, can be found throughout the western United States, serving a number of commercial and institutional buildings and complexes. Another resurgence in the development of GHP systems came following the oil crises of the 1970s when fears over rising costs and the availability of energy drove developers to look to systems that used ABSTRACT