Abstract:

Full arguments for adaptability of geological condition are the premise to develop shallow geothermal resources using the technology of Water Source Heat Pump (WSHP) reasonably.Division and assessment in areas suitable for shallow geothermal energy are based on geological condition and hydrogeological condition. In terms of geological condition and hydrogeological condition, there are three strata structure areas in Changchun City, which are the west area  of Jiajiawazi -Balipu-Xinglonggou, Jiajiawazi -Balipu-Xinglonggou bedrock fissure water area with the scarp east to the terrace of the west bank of Yitong river and the Yitong valley area.The evaluation index system of WSHP has been established to give an assessment of suitability in the three strata structure areas by fuzzy comprehensive evaluation method. The system is divided into three layers: the target layer, the sub-target layer,and the index layer. The sub-target layer contains the hydrogeological condition, the quality of groundwater, the temperature of groundwater. The index layer contains the thickness of aquifer and the other eight indicators.The conclusions are draw that areaⅠ is not suitable for WSHP, areaⅡ and Ⅲ are both suitable for developing shallow geothermal resources.It is considered that the conclusions are of instructive significance for developing shallow geothermal energy in Changchun City.

Key words: Changchun, shallow geothermal energy, water source heat pump, fuzzy comprehensive evaluation