Geothermal heat recovery appts. - uses heat exchange tubes sunk in ground by ram driving string of tubes

摘要

Vertical heat exchanger rods are sunk in the soil to recover the geothermal heat by water passing down a central tube and ascending in the annulus between it and an outer tube. The inner tube is fitted with a drive point and at the rear end with an adapter for an anvil for a pile driver. A temp. mast acts as the guide for a short jib with a monkey which is raised by a rope winch to exert the ramming blows. A mast (10) is kept upright by a tube (16) and acts as the guide for the jib (11) with a monkey (8,9). The inner tube (1) consists of sections (2,3) which are coupled by a taper thread (4). The leading tube has a ram point. At the rear end, an adapter (6) is screwed on for an anvil (7) to absorb the impacts when the drop weight is released.