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METHOD AND APPARATUS FOR SINGLE-LOOP TEMPERATURE CONTROL OF A COOLING METHOD

United States Patent Application

20130098598
A9
View the Complete Application at the US Patent & Trademark Office
An apparatus for cooling N heat-producing devices, where AT is an integer no smaller than one, using a cooling fluid that may be supplied at a temperature below the dew-point temperature of ambient air. To avoid condensation on the heat-producing devices, the cold fluid is warmed, upstream of the heat-producing devices, to a temperature T.sub.0 that is above the dew-point. The warming is accomplished, in a heat exchanger, by the warm fluid returning from the heat-producing devices. The amount of warming is controlled by periodically measuring T.sub.0 as well as the N temperatures downstream of the N heat-producing devices, and sending these N+1 temperature measurements to a control element that implements a control algorithm whose purpose is to achieve a set-point value of T.sub.0 by regulating, via N control valves, the flow of fluid to the N heat-producing devices. Also provided is a method for cooling the N heat-pro during devices pursuant to the inventive apparatus by a temperature control over the cooling fluid.
Hall, Shawn A. (Yorktown Heights, NY)
INTERNATIONAL BUSINESS MACHINES CORPORATION (Armonk NY)
12/ 483,542
June 12, 2009
[0001] This invention was made with U.S. Government support under Contract No. B554331 awarded by the Department of Energy, in view of which the U.S. Government has certain rights to this invention.