Heat exchange – Flow passages for two confined fluids – Interdigitated plural first and plural second fluid passages
Patent
1979-04-23
1981-11-24
Davis, Albert W.
Heat exchange
Flow passages for two confined fluids
Interdigitated plural first and plural second fluid passages
165122, 165175, 291573R, 122261, 122367A, 126435, 237 2A, F28D 708, F28D 904
Patent
active
043018629
ABSTRACT:
A heat exchanger for a multiple fluid medium solar energy system comprising a plurality of elongated strips of heat conducting material secured together to define a plurality of elongated passageways of uniform cross-section extending parallel to one another in the direction of elongation of said strips and wound spirally in a coil formation in a direction such that the passageways extend along side-by-side spiral paths. Sealing material spacers are provided between portions of the spirally wound strips defining adjacent volutes at two annularly spaced positions with respect to each spiral path through which first and second bores extend in generally radial direction of a number equal to the number of spiral paths. The plurality of first bores comprise a plurality of separate fluid medium inlet spaces communicating peripherally with an associated passageway in each volute for receiving therein a flow of fluid medium and directing the same into the associated passageway at each volute for flow therefrom in both annular directions. The plurality of second bores comprise a plurality of separate fluid medium outlet spaces communicating peripherally with an associated passageway in each volute for receiving the flow of fluid medium in the associated passageway at each volute in both annular directions and directing the same outwardly therefrom, and a housing structure for directing a flow of another fluid medium in an axial direction between adjacent volutes of the coil formation throughout the annular extent thereof.
REFERENCES:
patent: 967712 (1910-08-01), Bleriot
patent: 2063757 (1936-12-01), Saunders
patent: 2164005 (1939-06-01), Booth
patent: 3412787 (1968-11-01), Milligan
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