Regenerative preheater for two separate gas streams

Details Regenerative preheater for two separate gas streams Regenerative preheater for two separate gas streams

1982-10-12

1984-05-08

Davis, Jr., Albert W.

Heat exchange

Regenerator

165 7, F28D 1700

Patent

active

044469110

ABSTRACT:
A regenerative air preheater has a heat-exchange sector plate centered on an axis and formed with a multiplicity of axially throughgoing passages with intake and output heating-gas hoods axially flanking the plate and conduits for passing a heating gas from the intake hood through the plate to the output hood for heating the plate. Intake and output secondary heated-gas hoods each within one of the heating-gas hoods and axially flanking the plate are axially aligned with each other and only cover a portion of the plate. Thus the heating gas can pass through the plate only around the plate portion covered by the secondary hoods. Intake and output primary heated-gas hoods within the respective secondary hoods and axially flanking the plate are axially aligned with each other and only cover a subportion of the plate portion covered by the secondary hoods. Thus the secondary gas will be heated at regions of the plate portion not covered by the primary hoods. A drive rotates the secondary hoods synchronously with each other about the axis in a predetermined rotational sense. Thus the heating gas will heat regions of the plate not covered by the secondary hoods so that when same move into alignment with these heated regions the secondary gas stream will be heated. Portions of the primary hoods can be displaced nonaxially within the respective secondary hoods and to vary the heat-exchange between the primary stream and the plate.

REFERENCES:
patent: 2337907 (1943-12-01), Lundstrom
patent: 2347857 (1944-05-01), Waitkus
patent: 3321011 (1967-05-01), Kalbfleisch et al.

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