US 12,331,664 B2
Waste heat integration into pumped thermal energy storage
Jason A. Mallinak, Akron, OH (US); Timothy J. Held, Akron, OH (US); and Jason D. Miller, Hudson, OH (US)
Assigned to Supercritical Storage Company, Inc., Akron, OH (US)
Filed by Supercritical Storage Company, Inc., Akron, OH (US)
Filed on Feb. 6, 2024, as Appl. No. 18/433,722.
Claims priority of provisional application 63/443,775, filed on Feb. 7, 2023.
Prior Publication US 2024/0309781 A1, Sep. 19, 2024
Int. Cl. F01K 3/12 (2006.01); F01K 3/18 (2006.01); F01K 25/10 (2006.01)
CPC F01K 3/12 (2013.01) [F01K 3/185 (2013.01); F01K 25/103 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for use in a Pumped Thermal Energy Storage System (“PTES”), the method comprising:
circulating a working fluid through a working fluid circuit; and
operating the PTES through a charging cycle and a generating cycle while circulating the working fluid, in which:
during the charging cycle, transferring heat from a first low-temperature thermal reservoir to the working fluid, the first low-temperature thermal reservoir operating at a first temperature; and
during the generating cycle, transferring heat from the working fluid to a second low-temperature thermal reservoir, the second low-temperature thermal reservoir:
existing independently of the first low-temperature thermal reservoir;
being decoupled from the first low-temperature thermal reservoir; and
operating at a second temperature less than the first temperature.