On the i-s Diagrams of Combustion Gases of Acetylene-Air Mixture

概要

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In this paper, we carried out both the calculations of the thermodynamic properties and the drawings of the i-s diagrams for combustion gases composed of acetylene-air mixture, because acetylene has a few interesting properties compared with liquid fuels which are generally used for a spark ignition engine. Further, we performed the comparison with isochoric and isobaric heats of combustion found from each i-s diagram of acetylene and octane, it is indicated therefrom that the heat of combustion has a considerable difference between combustion gases of acetylene-air mixture and those of octane-air mixture under the state of higher temperature, larger specific volume, and lower pressure. For the above reason, this work may be useful in the case of a cycle calculation where the accuracy is especially required. The diagrams cover the following ranges ; excess air factors : 0.8,0.9,and 1.0,temperature : 600〜3000°K, pressure : 0.1〜200 ata, and specific volume : 0.04〜60m^3/kg.
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