烟台市城区浅层地热能评价

Evaluation of Shallow Geothermal Energy in Yantai City

浅层地热能是一种可再生的新型环保能源,近年来浅层地热能开发利用受到烟台当地政府的高度重视。该文在系统搜集烟台市城区基础地质、水文地质、地热地质等资料的基础上,通过采用抽水试验、回灌试验、现场热响应试验等工作手段,基本查明了浅层地热能开发利用涉及的地下水富水性特征、地下水回灌系数、岩土体热物性参数及岩土体结构等系列基础条件。采用层次分析法与模糊数学法对烟台市城区地下水源热泵与地埋管地源热泵两种浅层地热能开发利用方适宜性进行了评价,其中地下水地源热泵适宜区分布于牟平城北部,面积约53.66km^2;较适宜区分布于黄垒河、柳林河、夹河、辛安河等河流下游地区,面积约91.99km^2;地埋管地源热泵适宜区分布于调查区大部分地区,面积约739.09km^2;较适宜区分布于区内冲洪积平原和丘陵地区,面积约261.58km^2;不适宜区分布于福山邢家山、王家庄一带,面积合计2.29km^2。经概算烟台市城区100 m以浅,浅层地热容量为165.41×10^(12)kJ/℃,其中适宜区浅层地热容量为120.76×10^(12)kJ/℃,较适宜区浅层地热容量为44.26×10^(12) kJ/℃。城区地下水地源热泵系统适宜区与较适宜区冬季换热功率为24.40×10~5 kW,夏季换热功率为48.80×10~5 kW;地埋管地源热泵系统适宜区与较适宜区夏季换热功率为1.04×10~8 kW,冬季换热功率为0.79×10~8 kW。该成果为促进烟台市节能减排,新旧动能转换提供了翔实可靠地基础数据。

Shallow geothermal energy is a new type of renewable energy source. In recent years, the devel opment and utilization of shallow geothermal energy has been highly valued by the local government of Yantai city. Based on systematic collection of basic geology, hydrogeology, geothermal geology and other materials in urban area of Yantai city, the conditions for the development and utilization of shallow geo thermal energy have been basically identified by using pumping test, recharge test and on site thermal re sponse test. By using analytic hierarchy process and fuzzy mathematics method, the suitability of the de velopment and utilization of groundwater source heat pump and groundwater source heat pump have been evaluated. The districts of Yantai city can be divided into suitable areas, rather suitable areas and unsuita ble areas. Shallow geothermal energy reserves of each subarea have been estimated, and the heat transfer power of groundwater source heat pump and ground pipe source heat pump in winter and summer have been calculated. It will provide accurate and reliable basic data for promoting energy saving and emission reduction and the conversion of new and old energy in Yantai city.