Patents by Inventor William E. Lear, Jr.
William E. Lear, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10731554Abstract: Various embodiments relate to combined heat and power (CHP) systems. A CHP system can include a turbine system, a turbocharger system, and a refrigeration system. The refrigeration system can receive combustion products from the turbine system and compressed air from the turbocharger system. The refrigeration system can cool the combustion products and the compressed air to generate a cooled combustion product mixture that is provided to the turbine system. The turbine system can further comprise a fuel cell. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.Type: GrantFiled: September 12, 2018Date of Patent: August 4, 2020Assignee: University of Florida Research Foundation, Inc.Inventor: William E. Lear, Jr.
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Patent number: 10480353Abstract: Various examples are provided for cryogenic power extraction. In one example, among others, a system for cryogenic power extraction includes a heat exchanger that can heat a cryogenic working fluid using exhaust heat from a heat source, and a turbine that can generate power from the heated cryogenic working fluid. In another example, a method includes heating a cryogenic working fluid with waste heat from a heat source and driving a turbine with the heated cryogenic working fluid. Power produced by the turbine can be used drive a mechanical load and/or generate electricity for use by an electrical load. For example, waste heat from a combustion engine of a vehicle can be used to generate power for driving mechanical loads of the engine and/or to generate electricity for charging a battery of the vehicle.Type: GrantFiled: February 17, 2015Date of Patent: November 19, 2019Assignee: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.Inventors: Charles R. Cook, William E. Lear, Jr.
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Patent number: 10247408Abstract: Various embodiments relate to combined heat and power (CHP) systems. A CHP system can include a turbine system, a turbocharger system, and a refrigeration system. The refrigeration system can receive combustion products from the turbine system and compressed air from the turbocharger system. The refrigeration system can cool the combustion products and the compressed air to generate a cooled combustion product mixture that is provided to the turbine system.Type: GrantFiled: November 13, 2015Date of Patent: April 2, 2019Assignee: University of Florida Research Foundation, Inc.Inventor: William E. Lear, Jr.
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Publication number: 20190078513Abstract: Various embodiments relate to combined heat and power (CHP) systems. A CHP system can include a turbine system, a turbocharger system, and a refrigeration system. The refrigeration system can receive combustion products from the turbine system and compressed air from the turbocharger system. The refrigeration system can cool the combustion products and the compressed air to generate a cooled combustion product mixture that is provided to the turbine system. The turbine system can further comprise a fuel cell. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.Type: ApplicationFiled: September 12, 2018Publication date: March 14, 2019Inventor: William E. Lear, JR.
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Patent number: 10211470Abstract: Various examples are provided for operational control of fuel cells. In one example, among others, a system for controlling a fuel cell includes a stack temperature controller in cascade with a liquid level controller. The liquid level controller can provide a control output based at least in part upon an indication of a liquid level of a liquid fuel tank and a level reference. The stack temperature controller can provide a fan speed control output based at least in part upon an indication of a stack temperature of the fuel cell and the control output of the liquid level controller. In another example, a system for estimating methanol concentration of a fuel cell system includes a state observer that generates an estimate of the methanol concentration of fuel provided to a direct methanol fuel cell based upon a plurality of states of the fuel cell system.Type: GrantFiled: March 11, 2014Date of Patent: February 19, 2019Assignee: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.Inventors: Oscar D. Crisalle, Mohammad A. R. Biswas, Shyam Prasad Mudiraj, William E. Lear, Jr.
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Publication number: 20170009607Abstract: Various examples are provided for cryogenic power extraction. In one example, among others, a system for cryogenic power extraction includes a heat exchanger that can heat a cryogenic working fluid using exhaust heat from a heat source, and a turbine that can generate power from the heated cryogenic working fluid. In another example, a method includes heating a cryogenic working fluid with waste heat from a heat source and driving a turbine with the heated cryogenic working fluid. Power produced by the turbine can be used drive a mechanical load and/or generate electricity for use by an electrical load. For example, waste heat from a combustion engine of a vehicle can be used to generate power for driving mechanical loads of the engine and/or to generate electricity for charging a battery of the vehicle.Type: ApplicationFiled: February 17, 2015Publication date: January 12, 2017Inventors: CHARLES R. COOK, WILLIAM E. LEAR, JR.
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Publication number: 20160356556Abstract: A plasma actuator of the present disclosure comprises a plate electrode; a needle electrode positioned at a height above the plate electrode and a distance away from the plate electrode; and a voltage source connected to the needle electrode. Application of a signal from the voltage source to the needle electrode forms surface corona discharge around a tip of the needle electrode, and air flow driven by the corona discharge from the tip of the needle electrode is induced at a surface of the plate electrode. Accordingly, the air flow that is created can be used to cool a surface, such as a circuit board, a heat exchanger, etc.Type: ApplicationFiled: June 1, 2016Publication date: December 8, 2016Inventors: SUBRATA ROY, WILLIAM E. LEAR, JR., PENGFEI ZHAO
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Publication number: 20160138431Abstract: Various embodiments relate to combined heat and power (CHP) systems. A CHP system can include a turbine system, a turbocharger system, and a refrigeration system. The refrigeration system can receive combustion products from the turbine system and compressed air from the turbocharger system. The refrigeration system can cool the combustion products and the compressed air to generate a cooled combustion product mixture that is provided to the turbine system.Type: ApplicationFiled: November 13, 2015Publication date: May 19, 2016Inventor: William E. Lear, JR.
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Publication number: 20160020476Abstract: Various examples are provided for operational control of fuel cells. In one example, among others, a system for controlling a fuel cell includes a stack temperature controller in cascade with a liquid level controller. The liquid level controller can provide a control output based at least in part upon an indication of a liquid level of a liquid fuel tank and a level reference. The stack temperature controller can provide a fan speed control output based at least in part upon an indication of a stack temperature of the fuel cell and the control output of the liquid level controller. In another example, a system for estimating methanol concentration of a fuel cell system includes a state observer that generates an estimate of the methanol concentration of fuel provided to a direct methanol fuel cell based upon a plurality of states of the fuel cell system.Type: ApplicationFiled: March 11, 2014Publication date: January 21, 2016Applicant: University of Florida Research Foundation, Inc.Inventors: Oscar D. Crisalle, Mohammad A. R. Biswas, Shyam Prasad Mudiraj, William E. Lear, JR.
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Patent number: 7472550Abstract: A turbine engine system and a method for using the turbine engine system that includes at least one low-pressure compressor, at least one high-pressure compressor, at least one low-pressure turbine, and at least one high-pressure turbine. In addition, the turbine engine system includes an absorption refrigeration system that is used to pre-cool an air-gas mixture before it enters the high-pressure compressor. As such, the pre-cooled mixture is easier to compress, thereby increasing the thermal efficiency of the turbine engine. Additionally, the exhaust heat from the air-gas mixture that is pre-cooled may be used to drive the absorption refrigeration system. Lastly, water, may be extracted from the evaporator of the absorption refrigeration cycle.Type: GrantFiled: June 14, 2005Date of Patent: January 6, 2009Assignee: University of Florida Research Foundation, Inc.Inventors: William E. Lear, Jr., Sherif A. Sherif