Patent ID: 6729136
Filing Date: 2004-05-04
Classification: F01K

Abstract:
A power plant for powering a use device, comprising;a first reservoir fully-enclosed and contains a liquid metal; a second reservoir fully-enclosed and contains a substantially incompressible fluid; a fuel tank containing liquid nitrogen for cooling said liquid metal; a third reservoir containing heated transfer fluid for heating said liquid metal; a crankshaft driving said use device; a cylinder and a piston operably installed to drive said crankshaft; a separator separating said liquid mercury and said incompressible fluid from one another while maintaining said liquid mercury and said incompressible fluid at a same pressure; a valve system between said second reservoir and said cylinder allowing passage of said incompressible fluid therethrough to move said piston in suction and compression strokes; and a control system controlling alternately communication of liquid nitrogen from said fuel tank to cool said liquid metal and communication of said transfer fluid from said third reservoir to heat said liquid metal thereby causing said liquid metal to contract and expand thereby moving said incompressible fluid to drive said piston, said liquid nitrogen being exhausted after cooling said liquid metal, said fluid from said third reservoir being recycled from cooling said liquid metal back to said third reservoir.