The influence of pressure on combustion intensity

The influence of pressure in the range of 3–15 kgf/cm² on combustion intensity is studied experimentally in a medium-sized rig. The apparatus is described and temperature measurements by different thermocouple techniques are discussed; gas composition was monitored by gas chromatography. The experiments were performed at different cross sections allowing to map temperatures and gas concentrations. The results show that temperature and carbon dioxide concentration increase more rapidly as the pressure is raised. Carbon monoxide appears as an intermediate and is concentrated near the combustion axis. The combustion zone becomes shorter with increasing pressure and the combustion intensity increases correspondingly.