【作者】 于凤菊；

【导师】 丁良士；

【作者基本信息】 北京工业大学 ， 热能工程， 2003， 硕士

【摘要】 能源和环境问题是当今世界各国面临的重大问题，特别是随着北京申办2008年奥运会的成功，清洁能源地利用问题更成为我们面临的重要课题。而地热资源潜力大，洁净并会有多种微量元素和有益的组分，对环境很少污染。地热能利用供热系统，包括地热水系统及地源热泵系统的开发，更是大大推动了清洁能源的供热市场。本论文针对这些问题，又结合了该课题的来源一北京市计委立项项目“北京工业大学地热供暖示范工程”和北京市科委立项项目“低温地热梯级利用技术研究”，以及北京市可持续发展促进中心立项项目“地源热泵技术与工程模式的研究"，对低温地热的梯级利用和土壤源热泵系统的可行性进行试验研究。 本文就校内的地热供暖示范工程对低温地热梯级利用技术进行了一系列的小试一中试一工程一体化的实验研究。通过这些工程实现了低温地热水的合理利用，并对地热水成功地进行了回灌。在研究的过程中，对低温地热的梯级利用提出了不同的方案，以及适宜的设备，并进行了运行中的测试。得出地热水供热的总效率及地热水的利用率。积累了低温地热水供热的运行经验。并对供暖峰值负荷，和建筑物动态负荷进行了计算分析。在实验室建立土壤源热泵的试验系统，并在不同的地层及同一地层不同的地方埋设了大量传感器，用以测试土壤源热泵系统运行期间以及间歇间的土壤温度。本文通过对土壤源热泵系统的动态冷热负荷的变化，对其影响进行了进一步的计算和分析，并用相应的软件进行了模拟计算，与实验数据对照。论证了实验系统的可行性。本文的结论对低温地热能的利用具有指导意义。更多还原

【Abstract】 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．更多还原