Effects of Phase Change Materials on Flame Dynamics and Emissions in Natural Gas Combustion

Asadi, Ali; Zarei, Kazem

doi:10.22034/jast.2025.520814.1225

Effects of Phase Change Materials on Flame Dynamics and Emissions in Natural Gas Combustion

Articles in Press

Document Type : Original Article

Authors

Ali Asadi ¹

Kazem Zarei ²

¹ Department of Mechanical Engineering, Faculty of Engineering, Bozorgmehr University of Qaenat, Qaen, Iran

² Department of Mechanical Engineering, Bozorgmehr University of Qaenat, Qaen, Iran

10.22034/jast.2025.520814.1225

Abstract

Phase change materials (PCMs) have a high capacity for storing and releasing thermal energy at various temperatures, making them particularly significant in thermal and combustion systems. The main goal of this research is to investigate the effect of adding PCMs to natural gas fuel on flame characteristics and combustion performance. The selected PCMs include water, ammonia, ethane, propane, and argon. The chemical mechanism used in this research is GRI 3.0, and the simulations were conducted using CHEMKIN software. The results indicate that the addition of PCMs to the fuel reduces both the total lift-off length and flame length. Furthermore, incorporating these materials decreases flame temperature and the emissions of key pollutants, including nitrogen oxides (NOx), carbon monoxide (CO), and carbon dioxide (CO₂). The simulation results of this research show good agreement with both experimental and numerical findings from previous studies. The simulation results of this research show good agreement with both experimental and numerical findings from previous studies.

Keywords

Flame Length

Lift-off Length

Natural Gas

Phase Change Materials

Pollutant

Subjects