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method and apparatus to convert low temperature thermal energy to electricity

  • US 7,748,219 B2
  • Filed: 03/23/2006
  • Issued: 07/06/2010
  • Est. Priority Date: 03/23/2005
  • Status: Expired due to Fees
First Claim
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1. An article of manufacture storing machine readable instructions which, when executed, causes a machine to:

  • a. collect thermal energy;

    b. transfer the collected thermal energy to a concentrator, the concentrator comprising a heat engine, a liquid piston, and a heat pump; and

    c. invoke a series of oscillating cycles of the heat engine, the liquid piston, and the heat pump;

    d. the machine controlling the heat engine through at least one of an isothermal expansion phase, an isentropic expansion phase, a constant volume compression phase, and isothermal compression phase, or an isentropic compression phase;

    e. to drive an electrical generating unit operatively connected to the heat pump.

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