Open-loop vertical drywell gradient correction system and...

Details Open-loop vertical drywell gradient correction system and... Open-loop vertical drywell gradient correction system and...

2011-03-22

2011-03-22

Verbitsky, Gail (Department: 2855)

Thermal measuring and testing

Thermal calibration system

C374S003000, C374S208000

Reexamination Certificate

active

07909504

ABSTRACT:
A system and method are disclosed for controlling a drywell including a receiver having upper and lower ends with the lower end being more insulated than the upper and having a temperature sensor in thermal contact therewith. Upper and lower heaters are in thermal contact with the upper and lower ends respectively. A controller includes an integrated circuit having a temperature sensor. A reading from the integrated circuit is used to control power to the upper heater and reduce a temperature gradient between the upper and lower ends of the receiver.

REFERENCES:
patent: 3939687 (1976-02-01), Waldron
patent: 4079618 (1978-03-01), King
patent: 4901257 (1990-02-01), Chang et al.
patent: 6170983 (2001-01-01), Germanow et al.
patent: 7561058 (2009-07-01), Farley et al.
patent: 7607309 (2009-10-01), Liebmann et al.
patent: 7669427 (2010-03-01), Walker et al.

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