许昌市浅层地热能评价

Evaluation of the shallow geothermal energy in the Xuchang area

以线热源理论为基础,通过对许昌市城区不同区域岩土体进行垂直埋管试验,测试获取各岩土层热物性参数,计算浅层地热能可利用量和地热能储存量,为许昌市推广和发展土壤源热泵这一极具节能与环保潜力的浅层地热能应用提供理论基础和技术支撑。同时,通过对许昌市浅层地热能评价方法的介绍,为同类城市浅层地热能评价提供可借鉴的方法。

Shallow geothermal energy,which exists widely in shallow underground soil and groundwater,is a kind of low grade and renewable energy.In this paper,on the basis of line heat source theory,the vertical pipe-burying method of soil heat exchanger is used to obtain different thermo-physical parameters of the rock and soil layers.The shallow geothermal energy storage and available quantity are calculated.The results can also provide theoretical base and technical support for the popularization and development of shallow geothermal energy application in the GSHP system,which is of potential significance in energy saving and environmental protection.Furthermore,according to the introduction of the evaluation methods of shallow geothermal energy in the Xuchang area,the results can also provide referential method for shallow geothermal energy evaluation of similar cities.