Abstract
This paper is trying to find out whether using geothermal energy in buildings is available, when concern about both energy saving and economical efficiency. Under this line, this paper is discussing 3 aspects. 1. Survey and research the exsting models of using geothermal energy in buildings, excluding where they ere being used and how. 2.Analyse whether the exsting models fit the area where they were used .3.Based on field survey, the author try to analyse whether ground source heat pump and water source heat pump are available to be used in Jiang-Zhe region, and whether they are economical efficiency.
Keywords:buding;geothermal energy;energy saving;economical efficiency