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Abstract
A research gas turbine type combustoi has been used to examine the effect on performance of variation in primary zone equivalence ratio. The chamber, which comprised a conventional tubular primary zone followed by a lengthy plug flow section, was fuelled by propane vapour and operated over the equivalence ratio range 0.25-0.77 at atmospheric pressure. Comprehensive internal gas analysis surveys were undertaken and contour maps of gas concentration and derived information have been compiled.
Substantially super-equilibrium CO levels persisted throughout the burner, although a closer approach to equilibrium was obtained in the plug flow section at the higher equivalence ratios. This was qualitatively in accord with the predictions of a simple computer model presented previously. The data are being used for the verification and development of mathematical models of varying degrees of complexity.