Patent ID: 7089740

Claim:
A method of generating power from naturally occurring heat sources without fuels, comprising the steps of: (a) placing a liquid in a pressure vessel to form a liquid-vapor two-phase system, wherein the boiling point of the liquid is substantially near ambient temperature; (b) gathering heat energy from a naturally occurring heat source; (c) transmitting the heat energy gathered in step (b) to the liquid-vapor two-phase system to heat it to the boiling point of the liquid to vaporize the liquid and generate a high-pressure vapor; (d) using the high-pressure vapor generated in step (c) to drive a motor; (e) passing the vapor after driving the motor through a pipe to a cooler; (f) cooling the vapor entering the cooler to below the boiling point of the liquid and converting it to liquid; (g) passing the liquid from step (f) to a reservoir; and (h) returning the liquid from the reservoir through a check valve to the pressure vessel to form a complete cycle using a pump connected to a liquid level controller for the reservoir.