Bestimmung der Mindestzündenergie von Staub/Luft-Gemischen in Abhängigkeit der Temperatur

This master's thesis investigates the safety-relevant parameter minimum ignition energy (MIE) of dust/air mixtures, with a particular emphasis on its dependence on temperature. A detailed review of the relevant literature was conducted, focusing on influencing factors, the standardised testing methodology, and the MIKE 3 test apparatus commonly used for MIE determination. Furthermore, previous studies examining the temperature dependence of the MIE were analysed, and key findings and estimation approaches were summarised systematically. Based on these insights, the MIKE 3 apparatus was modified and adapted to allow for MIE measurements in various temperature conditions. Experimental investigations were subsequently carried out using lycopodium and pea flour as representative test dusts. The results were evaluated and compared with data reported in the literature. It was observed that the MIE decreases with increasing temperature, as expected; however, the reduction was less pronounced than previously documented in other studies.