| Title | Analysis of Borehole Heat Exchangers Design in View of Stream of Heat Exchanged Maximization with the Rock Mass |
|---|---|
| Authors | Tomasz Śliwa and Andrzej Gonet |
| Year | 2010 |
| Conference | World Geothermal Congress |
| Keywords | borehole heat exchanger designs, heat transfer factor, BHE heat resistance, heat pump, low temperature geothermal energy |
| Abstract | Five borehole heat exchangers of different design were made at the Faculty of Drilling, Oil and Gas AGH University of Science and Technology in Cracow (Poland). These are a coaxial system, a single and double U-pipes. Different grouts of various heat conductivity were used for sealing. The effective heat transfer value (eff) of the drilled profile and the heat resistance (Rb) of the heat exchanger were compared on the basis of thermal response tests (TRT) performed at various heat carrier streams. As a result various efficiency values were obtained for different technological solutions of borehole heat exchangers. |