A comparative study on combustion characteristics of methane, propane and hydrogen fuels in a micro-combustor

Tang, Aikun; Xu, Yiming; Shan, Chunxian; Pan, Jianfeng; Liu, Yangxian

doi:10.1016/j.ijhydene.2015.09.101

Cited by 94 publications

(11 citation statements)

References 32 publications

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“…The set-up of the experiment could be found in the work of Tang et al [37]. The experimental and simulation data were compared under the same conditions, which were an inlet velocity of 1.5 m/s and an equivalence ratio of 1.0.…”

Section: Validation Of the Modelmentioning

confidence: 99%

Interaction between heterogeneous and homogeneous reaction of premixed hydrogen–air mixture in a planar catalytic micro-combustor

Pan

Yang

et al. 2017

International Journal of Hydrogen Energy

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Hetero-/homogeneous combustion of hydrogen-air mixture in a platinum-coated micro channel was studied by means of three-dimensional (3D) Computational Fluid Dynamics (CFD) model using detailed reaction mechanisms for homogeneous (gas phase) and heterogeneous (catalytic) reactions.The influence of heterogeneous reaction on homogeneous reaction was obtained by discussing the hetero-/homogeneous reaction characteristics, the process and competitiveness of heterogeneous reaction. Intense depletion of fuel and product formation near the inlet has shown that fuel absorption reaction was predominant whiles there was no homogeneous reaction. The free radicals from homogeneous reaction near the catalytic surface were drained, resulting in the interruption of chain reaction. The desorbed product as the third-body promoted the chain terminating reaction to deactivate free radical. The competitiveness value of heterogeneous reaction for capturing fuel was 14.85%, indicating a weak reaction intensity in the catalytic combustor. The heterogeneous reaction presented an inhibition effect on homogeneous reaction but greatly enhanced the combustion efficiency in the micro channel.

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Section: Validation Of the Modelmentioning

confidence: 99%

Interaction between heterogeneous and homogeneous reaction of premixed hydrogen–air mixture in a planar catalytic micro-combustor

Pan

Yang

et al. 2017

International Journal of Hydrogen Energy

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“…36 The studies focusing on the comparison of syngas with propane and methane in air combustion are even limited in number. 37 Furthermore, to the best of the authors' knowledge, the comparison of these three fuels using oxy-combustion approach has not yet been investigated.…”

Section: Introductionmentioning

confidence: 99%

Analysis of methane, propane, and syngas oxy‐flames in a fuel‐flex gas turbine combustor for carbon capture

Haque

Nemitallah

Abdelhafez

et al. 2022

Intl J of Energy Research

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Premixed oxy-combustion flames of methane, syngas (CH 4 :CO:H 2 with the molar ratio of 2:1:1), and propane in CO 2 -diluted environment (for carbon capture) are examined in a swirl-stabilized combustor using large eddy simulations (LES) in three-dimensional (3-D) domain. The flame and emission characteristics are examined for the different fuels over a range of equivalence ratios (Φ: 0.34, 0.39, and 0.42), at 60% oxygen fraction (OF), and 2.5 m/s bulk inlet velocity under atmospheric conditions. The results indicate increments in several characteristic parameters that are of special importance for gas turbine combustion applications, including adiabatic flame temperature (T ad ), laminar flame speed (LFS), power density (PD), product formation rate (PFR), Damköhler number (Da), and CO emission, with the increase of Φ whatever the type of fuel. Alternatively, flame thickness (δ) decreases with the increase in Φ for the three fuels. Characteristic "V" shape with almost identical outer recirculation zone (ORZ) is also observed for the three fuels. Among the studied fuels, oxy-methane flames demonstrate highest flame thicknesses, least uniform temperature distribution (highest pattern factor) at combustor outlet, and lowest CO emission level. Oxy-syngas flames show more uniform temperature distribution (lowest pattern factor) at combustor outlet and highest CO emission as compared with the oxy-methane and oxy-propane flames. The oxy-propane flames have higher values of T ad , LFS, PD, PFR, Da, and thermal power (TP) along with lowest flame thickness compared with methane and syngas counterparts. Highlights• Increasing equivalence ratio improves the flame characteristics but increases CO emission.• Fuel type has insignificant effects on shape/size of the outer recirculation zone (ORZ).• Oxy-methane flames showed highest flame thicknesses and pattern factor and lowest CO.

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“…Flame stabilization is essential in meso and micro channel combustors. The experiments on micro combustion has revealed several characteristics of flames that are of importance in accordance to variables and to overcome these weaknesses, several strategies such as the flame stabilization in micro-scale combustors with wire mesh [14,15], flame stabilization with flame holder [10,22,24] and the studies of different fuel-air mixture [20,21] were conducted. Not only gaseous fuels were used, liquid fuels were also introduced and utilized in search for better fuel consumption.…”

Section: Introductionmentioning

confidence: 99%

Quantifying Heat Losses in Micro Combustor with Wire Mesh Using Numerical Simulation

Munir¹,

Tan²,

Mikami³

et al. 2020

ARFMTS

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Micro power generation system is a field of study that has come into interest by many researchers due to the strong demands for low weight and long-life power sources of electronic devices. These has led to the increasement of meso and micro-scale combustion investigations. In order to fully understand more on this field of study, a numerical stimulation is utilized to investigate the effect of heat recirculation on the blowout limit for micro combustion. Four different combination of tube combustors is used to investigate their blowout limit such as quartz-brass tube combustion combination for unburned-burned region of micro combustor tube. The combination of tube combustors is then investigated using three-dimensional (3D) numerical simulation. The results suggested that by utilizing brass tube on either region of unburned or burned tube is able to improve the value of heat conducted on inner wall of via inner wall of the tube greatly. Due to the conductivity of brass tube is much larger than quartz tube, the improvement is expected.

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A comparative study on combustion characteristics of methane, propane and hydrogen fuels in a micro-combustor

Cited by 94 publications

References 32 publications

Interaction between heterogeneous and homogeneous reaction of premixed hydrogen–air mixture in a planar catalytic micro-combustor

Interaction between heterogeneous and homogeneous reaction of premixed hydrogen–air mixture in a planar catalytic micro-combustor

Analysis of methane, propane, and syngas oxy‐flames in a fuel‐flex gas turbine combustor for carbon capture

Quantifying Heat Losses in Micro Combustor with Wire Mesh Using Numerical Simulation

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