US 12,264,599 B2
Synergistic heat pumped thermal storage and flexible carbon capture system
Todd M. Bandhauer, Fort Collins, CO (US); Daniel Herber, Fort Collins, CO (US); Braden Limb, Fort Collins, CO (US); Jason Quinn, Fort Collins, CO (US); Shane Garland, Fort Collins, CO (US); Ethan Markey, Fort Collins, CO (US); and Roberto Vercellino, Fort Collins, CO (US)
Assigned to Colorado State University Research Foundation
Appl. No. 18/034,469
Filed by COLORADO STATE UNIVERSITY RESEARCH FOUNDATION, Fort Collins, CO (US)
PCT Filed Oct. 29, 2021, PCT No. PCT/US2021/072129
§ 371(c)(1), (2) Date Apr. 28, 2023,
PCT Pub. No. WO2022/094605, PCT Pub. Date May 5, 2022.
Claims priority of provisional application 63/262,998, filed on Oct. 25, 2021.
Claims priority of provisional application 63/107,915, filed on Oct. 30, 2020.
Prior Publication US 2023/0392523 A1, Dec. 7, 2023
Int. Cl. F01K 23/10 (2006.01); F01K 15/00 (2006.01)
CPC F01K 23/10 (2013.01) [F01K 15/00 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A power plant system configured to generate electricity, the power plant system comprising:
a carbon-based fuel-fired power plant including a combustor configured to receive and combust air and a carbon-based fuel thereby producing heat and exhausting a flue gas, and a turbine configured to generate electricity;
a heat recovery steam generator including at least one heat exchanger and at least one steam turbine, the at least one heat exchanger configured to receive the flue gas and transfer heat from the flue gas to a fluid before the fluid enters the at least one steam turbine;
a carbon capture system configured to remove at least a portion of carbon-based gasses from the flue gas downstream from the heat recovery steam generator; and
a thermal storage system including a hot storage unit configured to store thermal energy at a hot temperature and a cold storage unit configured to store thermal energy at a cold temperature, the hot temperature greater than ambient temperature and the cold temperature less than ambient temperature;
wherein the power plant is configured to operate in at least a first mode for storing thermal energy in the thermal storage system and a second mode for releasing the stored thermal energy from the thermal storage system;
wherein during the second mode, before the air is combusted in the combustor the air is configured to transfer heat to the cold storage unit thereby lowering the temperature of the air received in the combustor; and
wherein during the second mode, heat stored in the hot storage unit is transferred to the carbon capture system.