Drying and gas or vapor contact with solids – Process – Gas or vapor contact with treated material
Patent
1994-09-28
1996-09-03
Bennett, Henry A.
Drying and gas or vapor contact with solids
Process
Gas or vapor contact with treated material
34487, 236 91A, F26B 300
Patent
active
055511694
ABSTRACT:
The temperature of air to heat or cool a product (16, 18) is maintained constant at levels which respectively are substantially higher or lower than the goal temperatures at which the respective products are to be stressed. Controllers (68, 70)having temperature/time profiles (72, 74) control the velocity of this higher or lower temperature air, as supplied by closed loops (20, 22) from high and low temperature sources (24, 26) to the products in their environmental stress chambers (12, 14), or bypassed through bypass conduits (50, 52) to maintain or change the temperatures of the products. High and low temperature sources (24, 26) and the product stress chambers (12, 14) may be interconnected by a cross-over arrangement of branches (80, 82, 84 and 86) to economize energy for heating or cooling the air, and to enable both environmental chambers (12, 14) to be interchangeably used for stress heating or cooling and, thus, to avoid movement of a product for the same purpose.
REFERENCES:
patent: 3467179 (1969-09-01), Tevis et al.
patent: 3807383 (1974-04-01), Lawler
Bennett Henry A.
Doster Dinnatia
Screening Systems, Inc.
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