| 摘要 |
<p>A geothermal energy system comprising at least one borehole heat exchanger, Hie at least one borehole heat exchanger containing a working fluid and comprising an elongate tube having a closed bottom end and first and second adjacent elongate coaxial conduits interconnected at the bottom end, the first conduit being tubular and surrounded by the second conduit which is annular, the at least one borehole heat exchanger having a major portion thereof extending in a substantially inclined orientation at an angle of from 3 to 95 degrees from vertical.</p> |
