TEMPERATURE-MODULATED RECUPERATED GAS TURBINE ENGINE

摘要

A recuperated gas turbine engine includes an engine core that has a compressor section, a combustor section, and a turbine section. An exhaust duct is located downstream of the turbine section for receiving a hot turbine exhaust stream from the turbine section. The exhaust duct includes a heat exchanger and a temperature-control module upstream of the heat exchanger. A compressor bleed line leads from the compressor section into the heat exchanger and a compressor return line leads from the heat exchanger into the engine core upstream of the combustor section. The compressor bleed line is operable to selectively feed compressed air to the heat exchanger, and the temperature-control module is operable to selectively modulate at least one of temperature and flow of the hot turbine exhaust stream with respect to the heat exchanger.

主权项

1. A recuperated gas turbine engine comprising:
an engine core including a compressor section, a combustor section, and a turbine section; an exhaust duct downstream of the turbine section for receiving a hot turbine exhaust stream from the turbine section, the exhaust duct including a heat exchanger and a temperature-control module upstream of the heat exchanger; and a compressor bleed line leading from the compressor section into the heat exchanger and a compressor return line leading from the heat exchanger into the engine core upstream of the combustor section, the compressor bleed line operable to selectively feed compressed air to the heat exchanger, the temperature-control module operable to selectively modulate at least one of temperature and flow of the hot turbine exhaust stream with respect to the heat exchanger.