US 11,852,043 B2
Pumped heat electric storage system with recirculation
Benjamin R. Bollinger, Cambridge, MA (US); Mert Geveci, Cambridge, MA (US); Bao H. Truong, Cambridge, MA (US); Erhan Karaca, Cambridge, MA (US); Sebastian W. Freund, Cambridge, MA (US); David M. Brantzeg, Cambridge, MA (US); James J. Underwood, Cambridge, MA (US); John S. Bowen, Cambridge, MA (US); and Roy T. Collins, Cambridge, MA (US)
Assigned to MALTA INC., Cambridge, MA (US)
Appl. No. 17/777,128
Filed by MALTA INC., Cambridge, MA (US)
PCT Filed Nov. 16, 2020, PCT No. PCT/US2020/060700
§ 371(c)(1), (2) Date May 16, 2022,
PCT Pub. No. WO2021/097413, PCT Pub. Date May 20, 2021.
Claims priority of provisional application 63/113,386, filed on Nov. 13, 2020.
Claims priority of provisional application 62/936,491, filed on Nov. 16, 2019.
Prior Publication US 2022/0389839 A1, Dec. 8, 2022
Int. Cl. F01K 3/12 (2006.01); F01K 3/00 (2006.01); F01K 3/06 (2006.01); F01K 3/26 (2006.01); F01K 13/02 (2006.01); F01K 25/00 (2006.01); F02C 1/10 (2006.01); F02C 6/14 (2006.01)
CPC F01K 3/12 (2013.01) [F01K 3/006 (2013.01); F01K 3/06 (2013.01); F01K 3/262 (2013.01); F01K 13/02 (2013.01); F01K 25/00 (2013.01); F02C 1/10 (2013.01); F02C 6/14 (2013.01); Y02E 60/14 (2013.01)] 39 Claims
OG exemplary drawing
 
1. A pumped heat energy storage system, the system comprising:
a charge compressor system;
a charge turbine system;
a generation compressor system;
a generation turbine system;
a hot-side heat exchanger (“HHX”) system;
a recuperator heat exchanger (“RHX”) system;
a cold-side heat exchanger (“CHX”) system;
a hot-side thermal storage (“HTS”) system;
a cold-side thermal storage (“CTS”) system;
a working fluid loop comprising:
a first working fluid path arranged to circulate a working fluid through, in sequence, the charge compressor system, the HHX system, the RHX system, the charge turbine system, the CHX system, the RHX system, and back to the charge compressor system,
a second working fluid path arranged to circulate the working fluid through, in sequence, the generation compressor system, the RHX system, the HHX system, the generation turbine system, the RHX system, the CHX system, and back to the generation compressor system, and
a third working fluid path arranged to recirculate at least a portion of the working fluid through the charge turbine system without circulating at least the portion of the working fluid through the CHX system, the RHX system, the charge compressor system, and the HHX system.