超過濃予混合火炎のふく射特性

概要

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An experimental study has been made on the radiation properties of laminar, luminous premixed flame at atmospheric pressure. By installing a pair of porous media at the upstream and downstream sides of the combustion space, excess enthalpy burning was applied for the methane/air mixture. As a result, a luminous flat flame with very low burning velocity was realized, unlike the conventional combustion. In the spectral range 0.4-4.0μm, measurements were made on spectral radiation intensity and spectral transmittance ; taking the emission from the flame into account, the absorptivity and adsorption coefficient for the flame were also obtained. It was found that the luminous radiation mainly consists of a continuous spectrum from the solid phase and band spectra from gases, while emitted radiation is partially absorbed by radiative gases. In particular, at wavelengths larger than 2.4μm, radiation of gases is stronger than that of the solid phase.
社団法人日本機械学会の論文
1994-09-25