Study On The Utilization Of The Low Temperature Geothermal Energy

Energy source and environment become the important problems in every country all over the world．With succeeding in applying the 2008 Olympic Games,the utilization of clean energy becomes the important task for US especially．Geothermal energy resource is potential and clean with many microelements and useful elements in it．It is hardly polluting to the environments．The development of the Utilization of Geothermal Energy including Geothermal Aquifer Water and the Ground—Source Heat Pumps System promotes the market of the cleansing energy heating．In this paper,a study on the gradient utilization of the low temperature geothermal energy and the feasibility of the Ground-Coupled Heat Pumps have been carried out in allusion to the origin of the task． In this paper,the series of research about the systems of low temperature geothermal gradient utilization has been put in practice combining the small experiment,middle test and engineering proj ect in the campus of university．The low temperatm'e geothermal water is used reasonably and re-inj ected successfully through these engineering．The different schemes and appropriate equipment for the space heating system using low geothermal aquifer water have been brought forward, the operating data and operating expedence in the utilization of the low temperature has been accumulated．The total efficiency and utilization rate of geothermal water were obtained through the tests．The peak heating load and dynamic heating and cooling load were calculated and analyzed for the buildings．The experimental system of the Ground-Coupled Heat Pumps Systems was built up in the lab．Some temperature sensors have been immerged in different depth and different places of the SalTle depth in order to measure the temperatures ofthe soil during the period of the operation and intermission of the system．At the sanle time,the temperature sensors of the fluid in water pipes have been fixed to test the entering and exiting water temperatures．The ammeters and pressure meters were fixed also to test the performance of the system．The influence of the different dynamic heating and cooling load were calculated and simulated for the GCHP system Comparing t11 the actual data,The simulation work were proceed by means of the relative softwares to prove the feasibility of the system．The conclusion of this paper plays aninstructing role in using the low temperature geothermal water system and the Ground-Coupled Heat Pumps System．...