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Bypass valve and coolant flow controls for optimum temperatures in waste heat recovery systems

United States Patent

8,554,407
October 8, 2013
View the Complete Patent at the US Patent & Trademark Office
Implementing an optimized waste heat recovery system includes calculating a temperature and a rate of change in temperature of a heat exchanger of a waste heat recovery system, and predicting a temperature and a rate of change in temperature of a material flowing through a channel of the waste heat recovery system. Upon determining the rate of change in the temperature of the material is predicted to be higher than the rate of change in the temperature of the heat exchanger, the optimized waste heat recovery system calculates a valve position and timing for the channel that is configurable for achieving a rate of material flow that is determined to produce and maintain a defined threshold temperature of the heat exchanger, and actuates the valve according to the calculated valve position and calculated timing.
Meisner; Gregory P. (Ann Arbor, MI)
GM Global Technology Operations LLC (Detroit, MI)
13/ 247,502
September 28, 2011
FEDERAL RESEARCH STATEMENT This invention was made with Government support under DE-FC26-04NT42278, awarded by the Department of Energy. The U.S. Government has certain rights in the invention.