Experimental study of minimum ignition energy of methane/air mixtures at elevated temperatures and pressures

Chen, Gan; Zeng, Weiping; Li, Zili; Fu, Yang; Li, Hongbo; Chen, Jie

doi:10.1016/j.fuel.2016.02.025

Cited by 39 publications

(8 citation statements)

References 18 publications

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“…The details of the experimental setup are almost the same as those from previous studies. 25 Here, we just give an outline of the experimental setup and the difference details. The composition of the experimental device is shown in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

“…In this paper, the ignition energy testing system is the same as that used in the previous study. 25 Two stainless steel electrodes are mounted in the center of the explosion vessel. The electrode is a pointed rod with a diameter of 1 mm.…”

Section: Methodsmentioning

confidence: 99%

“…The experimental procedure is almost the same as that used in the previous study. 25 The combustible gas mixture is made by a partial pressure method: methane is added into the vessel first until it reaches the required partial pressure, and then nitrogen and oxygen are added subsequently. Therefore, the combustible gas is made up of methane, nitrogen, and oxygen.…”

Section: Methodsmentioning

confidence: 99%

“…However, because of the resistance in the circuit and stray capacitance, the actual energy of the spark is always much smaller than that calculated using eq . In this paper, the ignition energy testing system is the same as that used in the previous study . Two stainless steel electrodes are mounted in the center of the explosion vessel.…”

Section: Experimental Sectionmentioning

confidence: 99%

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Experimental Study of Minimum Ignition Energy of Methane–Air Mixtures at Low Temperatures and Elevated Pressures

Chen

Yang

et al. 2016

Energy Fuels

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Previous research results show that, at the top of the distillation column of the liquefied process of oxygen-bearing coal-bed methane (CBM), an explosion hazard may happen. The minimum ignition energy (MIE) of combustible gas reflects the sensitivity of the explosion. Although MIE has been experimentally and theoretically studied at normal or elevated temperatures, there are no relevant data aimed at the environment (low temperature and high pressure) which exists at the top of the distillation column. Therefore, in this study, the MIE of a methane−air mixture was tested using a low temperature experimental vessel in the low temperature (123−273 K) and pressure (0.1−0.9 MPa) ranges. Our research results show that MIE increases with the decrease in initial pressure P 0 or temperature T 0 . When the initial pressure is relatively low, both the initial pressure and temperature significantly affect the MIE. However, at higher initial pressure, the initial temperature and pressure have relatively smaller impact on MIE. The MIE linearly correlates to 1/P 0 2 , whereas it linearly correlates to 1/T 0 . With the decrease in initial temperature, the degree of the impact of initial pressure on MIE gets larger. Additionally, with the increase in initial pressure, the degree of the impact of initial temperature on MIE gets smaller. The changing rule of our experimental MIE with initial temperature and pressure shows good accordance with published results. The energy generated by the human body, collision between the metals, lightning, and external fire is higher than the MIE of methane at the top of the distillation column, which indicates that an explosion hazard may happen. Thus, corresponding safety measures should be taken.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Experimental Sectionmentioning

confidence: 99%

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Experimental Study of Minimum Ignition Energy of Methane–Air Mixtures at Low Temperatures and Elevated Pressures

Chen

Yang

et al. 2016

Energy Fuels

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“…Accuracy of measurement of energy deposited in spark channel is important factor to evaluate minimum ignition energy [4]. It was found out that a gas pressure rise leads to a decline of the minimum ignition energy due to growth in combustible gas density [5]. But the pressure rise produces an increase in spark efficiency too [2].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Initial Pressure Effect on Energy Input in Spark Discharge in Nitrogen

Корытченко¹,

Tomashevskyi²,

Varshamova³

et al. 2019

Problems of Atomic Science and Technology

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An influence of initial gas pressure on energy deposited by spark discharge in nitrogen during the spark channel expansion is evaluated. Influence of the pressure on efficiency of energy deposition and emitted energy in a discharge channel is simulated. Dependencies of dynamic of energy input and an energy correlation coefficient on the pressure are found out. It was suggested to use an average value of the correlation coefficient to model a load of spark channel by the any initial pressure when a spark load is formed by atmospheric conditions.

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An experimental investigation into the effect of spark gap and duration on minimum ignition energy of partially dissociated NH3 in air

Lesmana

Zhu

Zhang

et al. 2022

Combustion and Flame

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Experimental study of minimum ignition energy of methane/air mixtures at elevated temperatures and pressures

Cited by 39 publications

References 18 publications

Experimental Study of Minimum Ignition Energy of Methane–Air Mixtures at Low Temperatures and Elevated Pressures

Experimental Study of Minimum Ignition Energy of Methane–Air Mixtures at Low Temperatures and Elevated Pressures

Numerical Simulation of Initial Pressure Effect on Energy Input in Spark Discharge in Nitrogen

An experimental investigation into the effect of spark gap and duration on minimum ignition energy of partially dissociated NH3 in air

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