Investigation on Characteristics of Biogas Flameless Combustion in Asymmetric Combustor and Effect of Hydrogen Addition on Biogas Emission

EasyChair Preprint 6776

Abstract

The world's energy demand has increased tremendously due to industrial development and population growth. The increased consumption of key energy sources such as coal, oil and natural gas has had a significant impact on the atmospheric environment. Of all alternative fuels, biogas offers the greatest potential benefit to the energy supply and the environment. Biogas from the anaerobic digestion of biomass and organic waste by microorganisms can be applied to heating, transportation and power generation as a renewable energy source. However, the low calorific value (LCV) of biogas is one of the most important bottlenecks for converting biogas into electrical or thermal energy. A three-dimensional (3D) CFD (Computational Fluid Dynamics) study was conducted to illustrate the various priorities of biogas flameless combustion compared to conventional modes through using a computational methodology that impalements the Rε/k−ε and the eddy dissipation turbulence. Also, the study effect added hydrogen to the biogas composition from 2% to 8% by volume on NOx emissions. Results demonstrated that flameless combustion is one of the best feasible strategies for biogas utilization. pollutant formation reduction and fuel consumption decreases are the main causes of biogas flameless combustion supremacy. Besides, adding only 2% of hydrogen to the biogas component leads to stability and uniform temperature, and adding hydrogen to the biogas component at up to 4% by volume alleviates the production of nitrogen oxides. However, adding hydrogen from 4% to 8% increases the NOx composition rate due to the high peak temperature.

Keyphrases: Asymmetric combustor, Biogas, CFD, Hydrogen, Low pollutant formation, flameless combustion

@booklet{EasyChair:6776,
  author    = {Abdelgader Agilah Gheidan and Mazlan A. Wahid and Fudhail A Munir and Muhammad Amri Mazlan Wahid},
  title     = {Investigation on Characteristics of Biogas Flameless Combustion in Asymmetric Combustor and Effect of Hydrogen Addition on Biogas Emission},
  howpublished = {EasyChair Preprint 6776},
  year      = {EasyChair, 2021}}