US 11,940,221 B2
Multi-stacked heat exchanger
John Dunn, New York, NY (US)
Assigned to DANDELION ENERGY, INC., Palo Alto, CA (US)
Filed by Dandelion Energy, Inc., New York, NY (US)
Filed on Jun. 28, 2022, as Appl. No. 17/852,061.
Claims priority of provisional application 63/314,959, filed on Feb. 28, 2022.
Prior Publication US 2023/0272978 A1, Aug. 31, 2023
Int. Cl. F28D 1/053 (2006.01); F25B 30/02 (2006.01); F28D 1/04 (2006.01); F28D 21/00 (2006.01)
CPC F28D 1/05391 (2013.01) [F25B 30/02 (2013.01); F28D 1/0417 (2013.01); F28D 21/00 (2013.01); F25B 2400/07 (2013.01); F28D 2021/0068 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a first heat exchanger defining,
a first conduit configured to receive a first fluid at a first end, flow the first fluid in a first direction through the first heat exchanger, and output the first fluid at a second end, and
a first passage configured to communicate a flow of a second fluid in a second direction orthogonal to the first direction, the flow of the first fluid in thermal communication with the flow of the second fluid; and
a second heat exchanger in fluid communication with the first heat exchanger and defining,
a second conduit configured to receive the first fluid from the second end of the first conduit, flow the first fluid in a third direction opposite and parallel to the first direction through the second heat exchanger, and output the first fluid at a second end,
a second passage configured to communicate the flow of the second fluid in the second direction, the flow of the second fluid in thermal communication with the flow of the second fluid,
wherein the flow of the second fluid passes through the second passage prior to the first passage, in counterflow with the flow of the first fluid,
wherein the first heat exchanger defines a first planar surface and the second heat exchanger defines a second planar surface substantially the same size as the first planar surface, wherein the first planar surface is parallel to and offset from the second planar surface, and wherein the first fluid flows over the first and second planar surfaces, in counterflow, to transfer thermal energy with the second fluid across substantially all of the first and second planar surfaces.