CPC F02G 1/055 (2013.01) [B33Y 80/00 (2014.12); F02G 1/04 (2013.01); F02G 1/043 (2013.01); F02G 1/044 (2013.01); F02G 1/047 (2013.01); F02G 1/05 (2013.01); F02G 1/053 (2013.01); F02G 1/057 (2013.01); F02G 3/00 (2013.01); F23R 3/005 (2013.01); F28D 9/04 (2013.01); F28F 7/02 (2013.01); F28F 13/003 (2013.01); F28F 13/14 (2013.01); F02G 1/0435 (2013.01); F02G 2243/00 (2013.01); F02G 2244/00 (2013.01); F02G 2244/08 (2013.01); F02G 2244/50 (2013.01); F02G 2244/52 (2013.01); F02G 2250/00 (2013.01); F02G 2254/10 (2013.01); F02G 2254/18 (2013.01); F02G 2257/00 (2013.01); F02G 2258/10 (2013.01); F02G 2270/80 (2013.01); F02G 2280/10 (2013.01); F28D 2021/0026 (2013.01); F28F 2210/10 (2013.01); F28F 2250/04 (2013.01)] | 11 Claims |
1. A monolithic heat exchanger body for inputting heat to a closed-cycle engine, the monolithic heat exchanger body comprising:
a plurality of heating walls configured and arranged in an array of spirals or spiral arcs relative to a longitudinal axis of an inlet plenum, wherein adjacent portions of the plurality of heating walls respectively define a corresponding plurality of heating fluid pathways fluidly communicating with the inlet plenum; and
a plurality of heat transfer regions, wherein respective ones of the plurality of heat transfer regions have a heat transfer relationship with a corresponding semiannular portion of the plurality of heating fluid pathways, wherein respective ones of the plurality of heating fluid pathways are concentrically adjacent to at least another one of the plurality of heating fluid pathways.
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