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Characteristics of Turbulent Flames in a Confined and Pressurised Jet-in-hot-coflow Combustor by D.B. Proud; M.J. Evans; Q.N. Chan; P.R. Medwell is a Engineering article available to read on EtoBox.

What is Characteristics of Turbulent Flames in a Confined and Pressurised Jet-in-hot-coflow Combustor about?

Combustion in hot and low oxygen environments—such as those encountered in practical devices including inter-turbine burners and sequential gas turbines—is not yet fully understood at a fundamental level, particularly in terms of the effects of pressure. To meet this gap in understanding, a confined-and-pressurised jet-in-hot-coflow (CP-JHC) combustor has been developed to facilitate optical diagnostics of turbulent flames in hot and vitiated coflows for the studies of flame stabilisation, structure and soot formation at elevated pressures. The CP-JHC burner has been designed for steady operation at 10 bar with internal temperatures of up to 1975 K, with a water-cooled central jet issuing into a hot oxidant stream of combustion products from a non-premixed natural gas/H2 burner. This work describes the key features and operational capabilities of the CP-JHC burner and presents a selection of experimental results showing characteristics not previously available. Specifically, temperature measurements of the hot coflow are used to estimate the enthalpy deficit of the stream, revealing an increase in thermal efficiency with increasing heat input, and a decrease with increasing pressur

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Author

D.B. Proud; M.J. Evans; Q.N. Chan; P.R. Medwell

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)