Patent ID: 7260934
Filing Date: 2007-08-28
Classification: F01K

Abstract:
1. An organic Rankine cycle engine comprising: (a) an organic working fluid; (b) a boiler capable of exchanging heat between the working fluid and an external heat source and raising the temperature of the working fluid; (c) a motor, having an intake and an exhaust port, capable of being driven by the working fluid, whereby the working fluid enters the intake port and exits the exhaust port in a gaseous state; (d) a condenser capable of exchanging heat between the working fluid and an external cooling source and lowering the temperature and pressure of the working fluid, whereby the working fluid is liquefied; (e) a first pump capable of transporting the liquid working fluid from the condenser to the boiler, under pressure; and (f) a means to create a pressure differential across the motor, thereby driving the motor, at start-up, selected from the group consisting of: