US 12,241,692 B2
Method for operating a heat exchanger, arrangement with a heat exchanger, and system with a corresponding arrangement
Stefan Lochner, Grafing (DE); Ralph Spöri, Egling (DE); Axel Lehmacher, Egling-Moosham (DE); Pascal Freko, Eurasburg (DE); Paul Heinz, Munich (DE); and Felix Rößler, Munich (DE)
Assigned to Linde GmbH, Pullach (DE)
Appl. No. 17/596,999
Filed by Linde GmbH, Pullach (DE)
PCT Filed Aug. 18, 2020, PCT No. PCT/EP2020/025378
§ 371(c)(1), (2) Date Dec. 22, 2021,
PCT Pub. No. WO2021/037391, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 19020492 (EP), filed on Aug. 23, 2019.
Prior Publication US 2022/0316811 A1, Oct. 6, 2022
Int. Cl. F25J 1/00 (2006.01); F25J 1/02 (2006.01); F25J 3/04 (2006.01); F28D 21/00 (2006.01)
CPC F28D 21/00 (2013.01) [F25J 1/0015 (2013.01); F25J 1/0251 (2013.01); F25J 1/0261 (2013.01); F25J 3/04187 (2013.01); F25J 3/04787 (2013.01); F25J 2215/42 (2013.01); F25J 2290/32 (2013.01); F28D 2021/0033 (2013.01)] 21 Claims
OG exemplary drawing
 
1. The method for operating a heat exchanger having a warm end and a cold end, said method comprising:
performing a first operating mode in first time periods, and performing a second operating mode in second time periods, wherein said second time periods alternate with the first time periods,
wherein in the first operating mode, a first fluid flow at a first temperature level is fed into a first region of said heat exchanger at the first temperature level, and is partially or completely cooled in the heat exchanger,
wherein in the first operating mode, a second fluid flow at a second temperature level, is fed into a second region of said heat exchanger at the second temperature level, and is partially or completely heated in the heat exchanger,
wherein in the second operating mode, the feeding of the first fluid flow and of the second fluid flow into the heat exchanger is partially or completely halted, and
wherein in the second time period, the second region is cooled using cooling fluid conducted through passages in or on the heat exchanger in the second region, but not in the first region, wherein said first region comprises the terminal 30% at the warm end of the heat exchanger.