Flame behavior inside constant diameter cylindrical meso­scale combustor with different backward facing step size

Sanata, Andi; Yuliati, Lilis; Sasongko, Mega Nur; Wardana, I.N.G.

doi:10.15587/1729-4061.2020.197988

Cited by 3 publications

(4 citation statements)

References 18 publications

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“…Butane has a higher calorific value than biogas, with a calorific value of 49500 kJ/kg [19]. However, the high calorific value of butane (C4H10) is determined by the carbon and hydrogen content of the chemical structure [20]. In this case, the higher the calorific value, the wider the stable flame area.…”

Section: Resultsmentioning

confidence: 99%

“…Many studies have been carried out through bio-gas combustion [20], but researchers rarely investigate premix combustion of biogas where the biogas fuel is mixed before combustion is carried out [21]. Related to the research that has been done, it is necessary to examine the characterization of biogas fuel combustion as information in its application.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Biogas as an Alternative Fuel in Micro-Scale Combustion Technology

Sanata,

Sholahuddin,

Rosyadi

et al. 2023

IJIE

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This study observes the flame characteristics of the biogas in micro/meso-scale (MSC) combustion technology, namely in a cylindrical MSC. For comparison, the fuel and combustor variations were carried out with backward-facing step size (bfs) as the flame holder in the combustor.The bfs are varied by changing the combustor's length of the inlet diameter. However, the size of the outlet diameter of the combustor is always constant to obtain a continuous combustion reaction zone. Biogas/methane (CH4), butane gas (C4H10), and a mixture of biogas-butane are used as fuel, with air as the oxidizing agent. The results showed that the type of fuel, reactant flow velocity, and equivalent ratio that occurred in the fuel variation and the bfs variation of the cylindrical msc influenced the flame characterization. Stable flame forms in the stoichiometric to rich equivalent ratio area and the medium to high reactant velocity area. The result shows that the equivalent ratio (φ) is 1.23 –1.44, the flame stability limit at the combustor ratio of 0.7, and biogas fuel has low flame stability compared to butane and the biogas-butane mixture. Moreover, the flame can be stable on butane fuel in the equivalent ratio (φ) 0.85 –1.43 and (φ) 0.86 –1.19 for the biogas-butane fuel mixture. Furthermore, when the D1/D2 increases, the flame stability of biogas tends to be wider than when the combustor ratio is 0.7, where the equivalent ratio (φ) is 0.98 –1.42. The result also shows that the flame can be stable on butane fuel in the equivalent ratio (φ) 0.71 –1.43, and for the biogas-butane fuel mixture, the flame can be stable in the equivalent ratio (φ) 0.69 –1.32. However, the best characterization of biogas combustion is formed in the variation of biogas treatment by mixing butane gas (biogas-butane). One of the methods used is called with a wider flame stability limit area. More varied flame visualization variations with a more widely distributed flame mode map, flame, and combustor wall temperature. The result shows that the combustor wall temperature of butane is around 225-250 °C, higher than the characterization of biogas combustion around 150°C, where it's without mixing butane gas for the possible test ranges.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of Biogas as an Alternative Fuel in Micro-Scale Combustion Technology

Sanata,

Sholahuddin,

Rosyadi

et al. 2023

IJIE

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“…They investigated the flame behavior and temperatures of the combustor and burned gases. Sanata et al (2020) examined the stability limits of flames formed in a cylindrical mesoscale combustor with a backward-facing step. Yang and Fan (2022) investigated the flame blow-off limit and burned gas temperature using a combustor with 6mm inner diameter by equipping it with a flame holder made of the porous composition of stainless-steel wire mesh.…”

Section: Introductionmentioning

confidence: 99%

Combustion performance of <i>n</i>-butane-fueled mesoscale annular combustor

SUENAGA,

YANAOKA

2024

JTST

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The lower vapor pressure of n-butane than gaseous fuels, such as hydrogen, methane, and propane, enables its fuel containers to be compact and highly portable. This study investigates the combustion characteristics and performance of a mesoscale annular combustor using highly portable n-butane. The inner and outer tubes of the combustor are fabricated using heat-resistant materials, and the combustion chamber has a volume of 1.84 cm 3 . The fuel-rich mixture and air are supplied to the combustion chamber through the inner and outer tubes, respectively. The experimental evaluation of the combustor was conducted in a region where the equivalence ratio is leaner than the stoichiometric ratio; this ratio is determined using the fuel and airflow rates provided to the combustor. The temperature of the burned gas at the combustor outlet can be varied from 1000 K to 1900 K. The combustor exhibited robust performance with maximum thermal efficiency, maximum thermal output, and energy density of 0.92, 251 W, and 137 W/cm 3 , respectively. The maximum pressure drop observed within the combustor (7.6 kPa) was sufficiently lower than the vapor pressure of n-butane, facilitating the supply of n-butane under its vapor pressure. Practically, this combustor can facilitate the development of portable power generators leveraging its efficient and mobile design and can be potentially used in emergency power supply systems and remote operations.

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“…This condition causes an unstable flame due to thermal quenching around the combustor walls and increased heat loss on the combustor walls, thus triggering fire extinguishing [12]. The short residence times and inadequate reaction times can make the condition worse [13]. Researchers have devised different treatments for small-scale combustors to improve flame stability.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Combustion in Cylindrical Meso-Scale Combustor with Wire Mesh Flame Holder as Initiation of Energy Source for Future Vehicles

Sanata,

Ilminnafik,

Asyhar

et al. 2024

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The research aims to analyze and reveal combustion characteristics in a Cylindrical Meso Scale (CMS) Combustor with a wire mesh flame holder as a reference for designing a compact, efficient, and high-density energy source for future vehicles. This experiment analyzes the combustion ’s of a butane gas (C4H10)-air mixture in a cylindrical meso-scale (CMS) combustor with the addition of wire mesh flame holder on the stability of the combustion flame, as initiation of future vehicle energy source. The diameter of the CMS combustor with wire mesh flame holder is varied to give an idea of the effect of heat loss on the combustion flame's characteristics. The results show that the wire mesh as a flame holder is essential in the combustion stabilization mechanism. A stable flame can be stabilized in a CMS combustor with wire mesh. Variations in the diameter of the CMS combustor will result in variations in the surface-to-volume ratio, heat loss, and contact area of the wire mesh flame holder. At a large diameter, it produces the characteristics of a combustion flame with a more stable flame stability limit than a smaller diameter, a dimmer flame visualization than a smaller diameter at the same air and fuel discharge, a more distributed flame mode map area than the smaller diameter, lower flame temperature and combustor wall temperature than the smaller diameter, and relatively higher energy output than the smaller diameter.

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Flame behavior inside constant diameter cylindrical mesoscale combustor with different backward facing step size

Cited by 3 publications

References 18 publications

Characterization of Biogas as an Alternative Fuel in Micro-Scale Combustion Technology

Characterization of Biogas as an Alternative Fuel in Micro-Scale Combustion Technology

Combustion performance of <i>n</i>-butane-fueled mesoscale annular combustor

Characterization of Combustion in Cylindrical Meso-Scale Combustor with Wire Mesh Flame Holder as Initiation of Energy Source for Future Vehicles

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Flame behavior inside constant diameter cylindrical meso­scale combustor with different backward facing step size

Cited by 3 publications

References 18 publications

Characterization of Biogas as an Alternative Fuel in Micro-Scale Combustion Technology

Characterization of Biogas as an Alternative Fuel in Micro-Scale Combustion Technology

Combustion performance of <i>n</i>-butane-fueled mesoscale annular combustor

Characterization of Combustion in Cylindrical Meso-Scale Combustor with Wire Mesh Flame Holder as Initiation of Energy Source for Future Vehicles

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Flame behavior inside constant diameter cylindrical mesoscale combustor with different backward facing step size