Patent ID: 7637108

Claim:
A power compounder system comprising: a prime mover producing waste heat; and a power compounder coupled to said prime mover, said power compounder comprising: a working fluid configured to receive thermal energy from said waste heat from said prime mover; a working fluid collector configured to hold said working fluid as a liquid working fluid; an evaporator fluidly coupled to said working fluid collector, said evaporator configured to transfer said waste heat to said working fluid to change said working fluid from said liquid working fluid to a vapor working fluid; a feed pump configured to cause said working fluid to flow between said working fluid collector and said evaporator; a double screw expander fluidly coupled to said evaporator, said expander configured to receive said vapor working fluid to create rotational mechanical energy from expansion of said vapor working fluid through said double screw expander, said double screw expander transfers said rotational mechanical energy via a shaft to said prime mover, wherein said double screw expander is further coupled to said prime mover via a power take-off shaft; and a condenser fluidly coupled to said double screw expander, said condenser configured to receive said vapor working fluid and change said vapor working fluid to said liquid working fluid, said condenser is fluidly coupled to said working fluid collector.