| 摘要 |
<p>A borehole reservoir for the storage of heat in rock or similarly dense ground has substantially vertical boreholes each with a centrally located pipe of lesser diameter than the surrounding borehole, the pipe being open at the bottom thereof and extending to the vicinity of the bottom of the respective borehole. Upper parts of the boreholes and the pipes communicate with watersupply lines and water-return lines, connected to a device for circulating the water through the lines and the pipes and annular passages between the pipes and the walls of the boreholes. Pipelines are connected to heat-producing devices and heat consuming devices for alternate supply and removal of heat to and from the water circulating in the reservoir, the boreholes being unlined and arranged to intersect a plurality of substantially horizontal boreholes which extend outwardly in a spoke-like manner from a central shaft containing water up to a ground-water level and which are located beneath the ground-water level and serve as the water-supply and water-return lines, and through which the upper parts of the vertical boreholes and the pipes communicate with the central shaft and the device for circulating the water.</p> |
