Study of the swirled flame of a domestic gas stove: efficiency and environment assessment

Reducing energy consumption and minimizing pollution are essential steps toward mitigating the effects of climate change as they help lower greenhouse gas emissions and decrease the reliance on non-renewable energy sources. These efforts are also vital for preserving environmental health, safeguarding ecosystems, and ensuring cleaner air and water for future generations. Cooking is a vital human activity that requires substantial energy, with gas burners being the most commonly used system. However, gas burners consume significant energy and contribute to pollution by emitting carbon oxides and methane. These emissions impact both indoor air quality and the environment. Adopting more energy-efficient cooking methods and cleaner technologies can reduce the environmental footprint of gas-based cooking. Gas consumption and air pollution reduction of gas stoves are an important research item. Many research works are done on this subject to increase the thermal efficiency and decrease the air pollutants emissions. Therefore, the main objective of this study is to improve the efficiency of an LPG domestic stove by creating a swirled flame by changing holes direction of the burner cap. Three angles are investigated, 0° (no swirl), 55° and 75°. Obtained results show an increase of the thermal efficiency when increasing the swirl angle. We observed an increase of 2% for swirl angle 75°. Pollutants emissions showed a slight increase in CO₂ and NOx levels when increasing swirl angle, accompanied by an important decrease in CO emissions. The CO₂ emission increases by about 5%, the NOx by 8.4% and the CO decreases by 21.3% at higher swirl angle. Reducing CO emissions improves the environment. CO contributes to climate change because it chemically participates in ozone production, which is a climate change gas.