Geothermal energy system fluid filter and control apparatus

Abstract

A geothermal energy transfer and utilization system abstracts thermal energy stored in hot solute-bearing well water to generate super-heated steam from an injected flow of clean water; the super-heated steam is then used for operating a turbine-driven pump at the well bottom for pumping the hot solute-bearing water at high pressure and always in liquid state to the earth's surface, where it is used by transfer of its heat to a closed-loop vapor generator-turbine-alternator combination for the generation of electrical or other power. Cooled, clean water is regenerated by the surface-located system for re-injection into the deep well and the residual concentrated solute-bearing water is pumped back into the earth. The invention features filter apparatus installed within the well at the location of the vapor generator-turbine-pump apparatus for removal of solid matter from the re-injected water before its use for lubrication of turbine and pump bearings and before conversion into a working fluid for driving the deep well turbine.

Dependencies are inferred from the claim text.