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US 12,753,722 B2Granted
Dilute combustion of hydrogen in retrofitted gas turbine engines
AssigneeUniversity of Florida Research Foundation, Inc.
InventorWilliam E. Lear
Life of this patent
Estimating the term…
Abstract
Various embodiments are provided related to improved gas turbine engine systems. In one example, a system is provided which includes a gas turbine engine having an air inlet stream, a hydrogen fuel supply, and an exhaust stream. The system further includes a heat exchanger configured to cool the exhaust stream from the gas turbine engine. The system can additionally include a recirculation pathway configured to mix the cooled exhaust stream from the heat exchanger with the air inlet stream.
Claims6
A system, comprising:
- a gas turbine engine having an air inlet stream, a hydrogen fuel supply, and an exhaust stream;
- a heat recovery unit positioned between the gas turbine engine and a heat exchanger, the heat recovery unit configured to at least:
- receive the exhaust stream of the gas turbine engine;
- cool the exhaust stream;
- and
- output the cooled exhaust stream to the heat exchanger;
- the heat exchanger configured to cool the exhaust stream from the gas turbine engine and to produce a first output of air that exits a first outlet of the heat exchanger and a second output of air that exits a second outlet of the heat exchanger;
- a chiller configured to cool the first output of air exiting from the first outlet of the heat exchanger, the chiller configured to generate a cool air stream that is directed into a cooler;
- and
- the cooler positioned between the heat exchanger and the air inlet stream and between the chiller and the air inlet stream, the cooler in communication with the second outlet of the heat exchanger and the chiller, the cooler configured the cool air stream from the chiller and the second output of air exiting the heat exchanger before mixing the cooled exhaust stream with the air inlet stream.
7 more elements
A method, comprising:
- diluting an air inlet stream for a gas turbine engine with an exhaust gas recirculation stream;
- providing a hydrogen fuel supply to the gas turbine engine;
- combusting the air inlet stream and hydrogen fuel supply to produce energy and an exhaust stream;
- and
- cooling the exhaust stream with a heat exchanger to produce the gas recirculation stream;
- wherein cooling the exhaust stream further comprises:
- using a heat recovery unit to remove heat from the exhaust stream of the gas turbine engine,
- directing the cooled exhaust stream to the heat exchanger for further cooling, wherein the further cooling includes:
- using a chiller to cool a first output from the heat exchanger;
- using a cooler to cool a second output from the heat exchanger;
- and
- adding the first cooled output and the second cooled output to the gas recirculation stream.
9 more elements
Dependencies are inferred from the claim text.