Efficiency of an ideal Brayton Cycle with a constant-volume interturbine burner
Document Type
Article
Publication Date
5-2015
Abstract
The investigation aimed to determine the potential thermodynamic gains in using a Humphrey cycle for a gas-turbine engine. Specifically, an isochoric combustor was considered for use as an interturbine burner (ITB).The analysis showed this configuration would facilitate less net power augmentation than a traditional isobaric combustor if the peak combustion temperature was matched to the allowable steady turbine inlet temperature. By allowing the peak combustion temperature to be elevated in order to match the mass averaged turbine inlet temperature, the Brayton cycle with an isochoric ITB yielded both a higher efficiency and greater power augmentation with any given high-pressure turbine (HPT) pressure ratio compared to one with a traditional isobaric ITB. It was possible to obtain a 51% power augmentation with an isochoric ITB as opposed to a maximum of a 43% augmentation with the isobaric ITB.
DOI
Source Publication
Journal of Propulsion and Power (ISSN 0748-4658 | eISSN 1533-3876)
Recommended Citation
Rutledge, J. L., & Polanka, M. D. (2015). Efficiency of an ideal brayton cycle with a constant-volume interturbine burner. Journal of Propulsion and Power, 31(3), 970–976. https://doi.org/10.2514/1.B35446
Comments
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