Annular Style Combustors

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ZK2000 annular combustor for Center for Clean Energy and Technology, Shanghai China

Prototype Manufacturing and Testing

Brayton’s liner from Alloy 230 custom formed to match the critical radiuses required including detailed hole patterns. Shown with installed instrumentation locations to measure effusion cooled temps

Internal view of instrumentation on cooling liner

5-axis .51mm (.020”) diameter drilled 30 degree angled effusion holes located on main scroll.

Liner installed in 316 stainless outer case prior to testing. Shown below the instrumentation is Brayton’s test nozzle designed to mimic our clients actual turbine engine for in-house testing.

Results for atmospheric test show good correlation with CFD (FLUENT™) simulation. Scaling the combustor by Mach Number preserves the aerodynamics, stoichiometry, reaction zone temp, and residence time scales within the combustor. Brayton empirical models are used to correct kinetic models for pressure and Reynolds Number effects.

Brayton test cell provides preheated unvitiated combustion air for atmospheric combustor qualification tests, employing Mach Number scaled conditions. By this method, emissions, pattern factor, and wall cooling analyses can be checked for engines up to 20 MW

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