High temperature air combustion - revolution in combustion technology - (Part I: New findings on high temperature air combustion)

Abstract

Combustion using combustion air with the condition of 1 010 °C and 3.0% oxygen content diluted air, has shown unique characteristics. A high flame stability, flame volume enlargement, greenish flame color and low NOx emissions were the characteristics of the combustion named here as high temperature air combustion. Flame with an enlarged volume having low flame luminosity was one of the important findings which implies a heat release rate in unit space of the flame decreased. The flame temperature profile thus became more homogeneous than ordinary flames. This potential that the high temperature air combustion may improve thermal field uniformity can cause a revolution of combustion technology on the high performance industrial furnace design.