Geothermic power system using borehole and double pipe - includes pumping cold water down between pipes collecting hot water at top

摘要

The power is made available by the fact that the soil temperature rises 1 deg. C for every 35 m depth of hole. The equipment consists of a double walled pipe with is installed into the ground to the required depth. The cold water from the surface is pumped down the outer pipe, its temperature rising as it goes down. At the bottom of the pipe the water enters the central tube and is allowed to rise to the surface and to be pumped away for use for heating or power generation. The height of the columns of water are maintained so that the outer column of cold water balances the inner column of hot water.