Countercurrent heat transfer apparatus and method

Details Countercurrent heat transfer apparatus and method Countercurrent heat transfer apparatus and method

1978-09-18

1980-01-08

Richter, Sheldon Jay

Heat exchange

Regenerator

Checker brick structure

165 84, 165 86, 165111, 165120, 209362, F28C 310

Patent

active

041824008

ABSTRACT:
Apparatus for transferring heat between solid particles includes an inclined cylindrical drum in which is disposed a helical auger. The outer lip of the auger, which is maintained in contact with the interior wall of the drum, is curved in the upward direction of the incline axis. The auger blade includes a plurality of apertures of generally uniform size. A feed bin is provided to introduce a first granular material into the upper end of the drum, with the particles of such granular material generally being of a size less than the size of the apertures in the auger blade. A second feed bin is provided to introduce a second granular material into the lower end of the drum, with the particle size of the second granular material generally being greater than the size of the apertures. The drum and auger are rotatable about the incline axis. When rotated, the first granular material sifts through the apertures in the auger blade downwardly in the drum, while the second granular material is forced upwardly by the auger blade. In this manner the first and second materials are placed in contact with one another. Provision of a curved outer lip for the auger facilitates downward movement of the first granular material since the material can move downwardly through the apertures in more nearly a vertical direction. This, in turn, facilitates better counterflow of the first and second granular materials to achieve heat exchange therebetween.

REFERENCES:
patent: 892502 (1908-07-01), Coon
patent: 1085528 (1914-01-01), Bighetti
patent: 3253892 (1966-05-01), Brignac et al.

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