US 11,053,818 B2
Cryogenic combined cycle power plant
William M. Conlon, Palo Alto, CA (US)
Filed by William M. Conlon, Palo Alto, CA (US)
Filed on Jul. 1, 2019, as Appl. No. 16/458,831.
Application 16/458,831 is a continuation of application No. PCT/US2017/067360, filed on Dec. 19, 2017.
Claims priority of provisional application 62/489,129, filed on Apr. 24, 2017.
Claims priority of provisional application 62/484,182, filed on Apr. 11, 2017.
Claims priority of provisional application 62/441,819, filed on Jan. 3, 2017.
Prior Publication US 2020/0056511 A1, Feb. 20, 2020
Int. Cl. F01K 19/00 (2006.01); F01K 11/00 (2006.01); F01K 13/00 (2006.01); F01K 25/06 (2006.01); F01K 9/00 (2006.01); F01K 7/02 (2006.01)
CPC F01K 19/00 (2013.01) [F01K 7/02 (2013.01); F01K 9/00 (2013.01); F01K 11/00 (2013.01); F01K 13/00 (2013.01); F01K 25/06 (2013.01); F01K 9/003 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of storing and recovering energy, the method comprising:
storing heat from a heat source in a thermal energy storage system;
producing liquid air in an electrically powered liquefaction process and storing the liquid air;
pressurizing the liquid air;
heating at least a portion of the pressurized liquid air to produce gaseous air and then heating the gaseous air, at least in part using heat from the thermal energy storage system in an air heater;
expanding the heated gaseous air through a first turbine to generate power;
heating an organic working fluid to convert the organic working fluid from liquid to gaseous phase and then heating the gaseous phase organic working fluid, at least in part with heat from the thermal energy storage system in an organic working fluid heater;
expanding the heated gaseous organic working fluid through a second turbine to generate additional power;
condensing in a first condenser a first portion of the gaseous organic working fluid exhaust from the second turbine from gas phase to liquid phase by transferring heat from the first portion of gaseous organic working fluid exhaust from the second turbine to the liquid air or gaseous air during heating of the liquid air or the gaseous air;
expanding a second portion of the gaseous organic working fluid exhaust from the second turbine through a third turbine to generate additional power; and
condensing in a second condenser at least a first portion of the gaseous organic working fluid exhaust from the third turbine from gas phase to liquid phase by transferring heat from the first portion of gaseous organic working fluid exhaust from the third turbine to the liquid air or gaseous air during heating of the liquid air or the gaseous air;
wherein the first portion of the gaseous organic working fluid exhaust from the second turbine is condensed in the first condenser at a first pressure; and
the first portion of the gaseous organic working fluid exhaust from the third turbine is condensed in the second condenser at a second pressure lower than the first pressure.