An Experimental Investigation of Hot Surface Ignition of Hydrogen and Hydrocarbon Mixtures in Air
نویسنده
چکیده
Hot surface ignition was examined using a variety of heat sources in a series of premixed hydrocarbon, hydrogen, and air mixtures. Building off previous work, hexane-air, heptane-air and hydrogen-air experiments were performed in addition to the eventual hexane-hydrogen-air mixtures. Using high-speed schlieren photography, thermocouples, and a fast-response pressure transducer, flame characteristics such as ignition temperature, flame speed, pressure rises, and combustion mode were recorded. Variations in the mixture composition gave rise to different modes of combustion: single flame, multiple flames, and continuously puffing ignition. A puffing mode was demonstrated for lean hydrogen-air mixtures and for a narrow range of hydrogen-hexane-air mixtures.
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