Patent ID: 8387379

Claim:
An electricity generation device, using hot gas comprising: a closed container that may be filled with a high-pressure gas; a cylinder, selected from a pneumatic cylinder and a hydraulic cylinder, connected to an outlet of said closed container, and including a piston and a piston rod; a sprinkler inside said closed container for spraying a hot fluid and a cold fluid alternately into said closed container to heat up or cool down said high-pressure gas, wherein, as said high-pressure gas expands and contracts, said piston of said cylinder is moved back and forth in a reciprocal movement; a fixed wheel configured on an end of the piston rod; a first cable with an end connected to the piston rod end through the fixed wheel; an axle, wherein another end of the first cable is fixedly wound around the axle; a fixed pulley passing the first cable from the fixed wheel to the axle; and a generator for converting said reciprocal movement of said piston into electricity; wherein when said piston rod moves forward, said first cable is pulled to spin said axle which in turn drives said generator to produce electricity.