| The groundwater heat pump systems (GWSPS) were widely extended in the recent years for its reliability of running, low energy-consumption, less contamination etc.. The application of this system, however, was restricted by the high cost of initial capital investment and geological conditions. Consequently, studying on the water source and annual energy-consumption of heat pump systems should be intensified, then the possibility of spreading in some areas could be confirmed. Basing on the analysis of the GWSPS, the geological conditions and demand for the GWHPS were discussed, furthermore, a criteria and the corresponding measurement of water treatment were proposed for the GWSPS. The BIN method was adopted to simulate the annual energy-consumption of GWSPS. Basing on the weather data of a standard year in Wuhan, which derived from the data of the last 15 years, the data for the BIN method of annual and 8-hours system were calculated. The annual energy-consumption of an office building in Wuhan was obtained and compared with the partner of the air-source heat pump systems, the result shows that the energy consumption of the former was approximately less than the second 23% in summer and 19% in winter. Case analysis between the two different functional buildings for the application of GWSPS was performed, the consumption of electricity of the heat pump unit was the maximal among the equipment of GWSPS, account for about 68.29% through out the systems. The consumption of electricity of the air conditioning systems of office building was greater than the residence's. The energy consumption of which the ratio of window to wall is 35% was less 54% than those which the ratio is 80%. This infer that reduce the ratio of window to wall could markedly take from the energy consumption of air conditioning systems. Finally, the relevant solution concerning the possible problem of GWSPS, e.g. underground water resource, aging of well, injection was suggested.
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