| CPC F02C 6/08 (2013.01) [F02C 3/13 (2013.01); F02C 7/08 (2013.01); F02C 7/10 (2013.01); F02C 7/32 (2013.01); F02C 9/18 (2013.01); F02C 9/52 (2013.01); F02G 5/00 (2013.01); F02K 3/02 (2013.01)] | 13 Claims |
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1. A waste heat recovery system for a gas turbine engine, the waste heat recovery system comprising:
a first tap drawing bleed airflow from a core flow path up stream of a combustor section of the gas turbine engine, wherein the combustor section is configured to generate an exhaust gas flow that is expanded through a turbine section;
an exhaust heat exchanger disposed aft of the entire turbine section and configured to transfer thermal energy from an exhaust gas flow of the gas turbine engine into the bleed airflow to generate a heated bleed airflow, wherein the turbine section includes a high pressure turbine section and a low pressure turbine section and the injection location is within the low pressure turbine section; and
an injection location within a turbine section of the gas turbine engine where at least a portion of the heated bleed airflow is received and expanded through the turbine section to generate a mechanical power output;
a secondary heat source configured to heat the bleed air exhausted from the exhaust heat exchanger before injection at the injection location, wherein the heated bleed airflow exhausted from the secondary heat source and the exhaust gas flow exhausted from the low pressure turbine arc of equal pressure and equal temperature.
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