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Cooling method with automated seasonal freeze protection

United States Patent

May 31, 2016
View the Complete Patent at the US Patent & Trademark Office
An automated multi-fluid cooling method is provided for cooling an electronic component(s). The method includes obtaining a coolant loop, and providing a coolant tank, multiple valves, and a controller. The coolant loop is at least partially exposed to outdoor ambient air temperature(s) during normal operation, and the coolant tank includes first and second reservoirs containing first and second fluids, respectively. The first fluid freezes at a lower temperature than the second, the second fluid has superior cooling properties compared with the first, and the two fluids are soluble. The multiple valves are controllable to selectively couple the first or second fluid into the coolant in the coolant loop, wherein the coolant includes at least the second fluid. The controller automatically controls the valves to vary first fluid concentration level in the coolant loop based on historical, current, or anticipated outdoor air ambient temperature(s) for a time of year.
Campbell; Levi A. (Poughkeepsie, NY), Chu; Richard C. (Hopewell Junction, NY), David; Milnes P. (Fishkill, NY), Ellsworth, Jr.; Michael J. (Lagrangeville, NY), Iyengar; Madhusudan K. (Foster City, CA), Simons; Robert E. (Poughkeepsie, NY), Singh; Prabjit (Poughkeepsie, NY), Zhang; Jing (Poughkeepsie, NY)
13/ 758,143
February 4, 2013
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with Government support under Contract No. DE-EE0002894, awarded by the Department of Energy. Accordingly, the U.S. Government has certain rights in the invention.