Research On Investigation And Evaluation Of Shallow Geothermal Energy Resources Of Chongqing

Shallow geothermal energy is renewable resources, broad prospects are used. Usually, is used in the form of ground source heat pump system, Water source heat pump system. Input to the heat pump system lkW high-grade energy, heat pump system can output4kW or even more energy to the building, its COP value is of almost2to3times of the traditional air-conditioning. Beijing and Tianjin has been completed the research of shallow geothermal energy potential investigation and evaluation, and the research shows that the shallow geothermal energy will make a huge contribution to energy saving for the two cities, it will have a significant impact on the economy, natural environment.Ultimately, this proJect is to investigate and evaluate the appropriate region of the nine districts of Chongqing urban construction area (1670km2, of Which the survey area is580km2,common survey area is1090km2):The purpose of this study is to evaluate the heat capacity, heat exchanger power, the total use of resources, soil thermal equilibrium of the region where the shallow geothermal energy can be well developed, finally, predict the impact on the environment.This topic is on the basis of the existing research results "Shallow geothermal energy adaptive partition in the urban area of Chongqing ", by researching a large collection of relevant information and documentation, on-site drilling thermal response experiment, the laboratory of mining underground and surface water samples and bedrock samples for water quality and the mechanical and thermal properties experiments analize the shallow geothermal energy resources of the nine districts of Chongqing urban construction area (1670km2) and evaluate the amount of the storage shallow geothermal energy, and forecast the hydrology, vegetation and other environmental impact by developing and utilizing of it. Here are the steps:first, collect information; second, drilling geologic exploration hole and thermal response test, extraction of underground rock sample indoor analysis and test report; third, analysis, statistical test data and produce charts; fourth, based on the Excel, Mapgis, AutoCAD, fluent and other software to calculate the shallow geothermal energy in Chongqing city heat capacity, available resources, achieve the research goal.Through calculation, the survey area of shallow layer geothermal heat capacity of660.74X1012kJ/℃, wherein, focused on the investigation of area of230.91×1012kJ/℃ equivalent to the standard coal respectively22570000tons/℃and7890000tons/℃investigation of the area the buried tube heat exchanger can use the power of4.04X107kW, focused on the investigation of area of1.42X107kW.