US 11,686,527 B2
Cryogenic liquid energy storage
William M Conlon, Palo Alto, CA (US)
Assigned to Pintail Power LLC, Palo Alto, CA (US)
Filed by PINTAIL POWER LLC, Palo Alto, CA (US)
Filed on Jan. 6, 2022, as Appl. No. 17/570,016.
Application 17/570,016 is a continuation of application No. 15/831,783, filed on Dec. 5, 2017, granted, now 11,221,177.
Application 15/831,783 is a continuation of application No. PCT/US2016/032363, filed on May 13, 2016.
Claims priority of provisional application 62/180,437, filed on Jun. 16, 2015.
Prior Publication US 2022/0128300 A1, Apr. 28, 2022
Int. Cl. F25J 1/02 (2006.01); F02C 3/22 (2006.01); F02C 7/143 (2006.01); F25J 1/00 (2006.01)
CPC F25J 1/023 (2013.01) [F02C 3/22 (2013.01); F02C 7/143 (2013.01); F25J 1/0012 (2013.01); F25J 1/0045 (2013.01); F17C 2265/05 (2013.01); F17C 2265/07 (2013.01); F25J 2240/80 (2013.01); F25J 2260/60 (2013.01); F25J 2290/62 (2013.01); Y02E 20/16 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of storing and recovering energy, the method comprising:
regasifying liquid air or liquid air components to produce gaseous air or gaseous air components using heat from an exhaust gas stream from a turbine;
expanding the regasified liquid air or liquid air components through at least one stage of expansion in an engine without combusting the regasified liquid air or liquid air components;
mixing the expanded regasified liquid air or liquid air components with inlet air to a compressor to form an air mixture;
compressing the air mixture with the compressor and introducing the compressed air mixture into a combustor;
introducing a fuel into the combustor and combusting it with the compressed air mixture to form a hot gaseous working fluid; and
expanding the hot gaseous working fluid through the turbine to form the exhaust gas stream from the turbine.