Abstract

Abstract Heat recirculation to a gas ring burner results in the expected extension of stability limits towards leaner mixtures and reduced fuel flows. As a method of retrieving convective heat loss around the periphery of a cylindrical heat sink, it is more effective to heat up a surround and radiate the recuperated heat to the surface than to preheat the reactants with it. Fuel savings up to 40% and corresponding reductions in heating times are observed, leading to suggestions for the design of practical devices.

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