Characterization of heat transport processes in geothermal systems

摘要

Experimental field tests as well as laboratory tests have been conducted. In addition to field tests, a geothermal laboratory device has been developed. With the help of this device, the heat transport processes in different geological and hydrogeological conditions can be simulated. The different types of heat transport mechanisms in geothermal systems can be characterized clearly. Furthermore, it is possible to determine the increase of the effective thermal conductivity of a line source with rising groundwater flow velocities. With the geothermal data gathered, common numerical programs are verified and optimized. Therefore, all measured data are reconsidered by numerical back analysis.