Experimental investigation on the propagation of flow and flame in a confined combustion chamber equipped with a single-hole perforated plate

Wei, Haiqiao; Li, Kuangdi; Zhao, Jianfu; Zhou, Lei

doi:10.1016/j.ijhydene.2020.08.285

Cited by 11 publications

(4 citation statements)

References 44 publications

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“…At 0.45 ms a distinct boundary line (white‐dotted line) can be observed. The formation mechanism of combustion phenomena was expounded in detail by the experiment of Zhou 44 . The secondary flame front was generated on the surface of the primary flame due to the effect of the toroidal vortex when the flame passed through Plate A, and it appears as a similar laminar flame.…”

Section: Resultsmentioning

confidence: 99%

“…As can be seen in Figures 10 and 11, at 0.5 ms pressure oscillations appear under different initial pressures. Zhou 44 pointed out that compression waves were generated due to the acceleration of flame and confinement effect, even produced autoignition combustion, which led to higher pressure peaks and pressure oscillations. The intensity of combustion can be characterized by pressure oscillation.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Flame propagation behavior of propane–air premixed combustion in a confined space with two perforated plates at different initial pressures

Zhang

Wang

et al. 2022

Energy Science & Engineering

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The aim of this paper is to analyze local autoignition induced by secondary flame acceleration. The secondary flame acceleration process and the local autoignition formation mechanism at the condition of the secondary flame acceleration propagation were investigated by utilizing an improved designed constant volume combustion bomb (CVCB) with two perforated plates. Primary flame and secondary flame propagation were recorded via high‐speed schlieren photography. The results showed that there were three distinct stages in the process of flame propagation through two perforated plates, which were the primary jet flame stage, secondary jet flame stage, and flame‐shock interaction stage. The morphologies of the flame were analyzed by high‐speed Schlieren images, flame velocities, and pressure oscillation including primary jet propagation, secondary flame formation and acceleration, and location autoignition. Results show the effect of initial pressure on flame propagation, flame velocity, and pressure oscillation. Acceleration of secondary flame and local autoignition phenomenon was more precisely demonstrated as unburnt gases were compressed by flame waves (different velocities) with initial pressure increasing. Based on the morphology of flame, three different types of flame combustion modes were captured at different initial pressure involving turbulent flame, deflagration, and quasi‐detonation. The present work might provide a new insight for combustion science in a confined space, such as autoignition due to compression effect of secondary jet flame and primary flame interaction. It also provides the theory guidance and research direction towards further studies on propane storage vessel deflagration.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Flame propagation behavior of propane–air premixed combustion in a confined space with two perforated plates at different initial pressures

Zhang

Wang

et al. 2022

Energy Science & Engineering

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“…e main function of the perforated plate was to provide the speed of the flame as described in the study [13][14][15]. Modified perforated plates can significantly lower the speed of flame downstream as discussed in [16][17][18][19]. Perforated plates have the potential to extinguish flames.…”

Section: Introductionmentioning

confidence: 99%

The Modification of the Perforated Plate in the Fluidized-Bed Combustor to Analyze Heat Convection Rate and Temperature

Erdiwansyah

Mahidin

Husin

et al. 2021

Journal of Combustion

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Investigation of combustion temperature through experiments with a wide range of fuels, both solid and liquid, is continuously being conducted by scientists around the world, while the measurement of heat transfer rate can be analyzed when the combustion process occurs. Previous research has generally been conducted using liquefied gas, fossil fuels, and alcohol additives. Specifically, the research in this work investigated the convection heat rate and combustion temperature through the modification of the perforated plate. The experiment was conducted in the fluidized-bed combustor (FBC) fuel chamber using solid waste fuel of oil palm biomass. Measurements were performed at four different points using the HotTemp HT-306 Digital Thermometer. The results of the experiment showed that the convection heat rate in measurement one (M-I) reached 8.258 W/m2 for palm kernel shell (PKS) fuel. Meanwhile, in measurement two (M-II), the convection rate of 7.392 W/m2 was produced by oil palm midrib (OPM) fuel. The highest combustion temperature was recorded with OPM fuel (884°C) at M-I. However, the combustion temperature of the PKS combustion process is higher at 896°C but shows a less good trend than OPM. Overall, the measurement results of the three types of fuel used to modify the perforated plate applied in the FBC fuel chamber are excellent. It can be proven that the fuel is put into the combustion chamber with nothing left.

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“…The results of experiments conducted h/Δp heat exchanger with QPP comprehensively can be increased by 27% -41%. The effect of hole size and position of perforated plates on flame and flow encroachment and oscillations at pressure explored in constant volume combustion chambers (CVCBs) using single-hole perforated plates has also been studied [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Modification Perforated Plate for Combustion Temperature in Fluidized-Bed Combustor

Erdiwansyah¹,

Mahidin²,

Husin³

et al. 2023

MMEP

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Perforated plates have been widely used for various applications, especially within the FBC combustion chamber. Investigation of combustion temperature with modification of perforated plates in FBC fuel chambers using palm oil biomass fuel is still very little found in the publication. Modifying the perforated plate in the FBC chamber aims to investigate the effects of combustion temperature. Three types of fuels, PKS, OPM, and EFB, are used to analyze the level of combustion temperature produced from within the FBC fuel chamber. Test results showed that PKS fuel had a higher combustion temperature level for all points tested. Each measurement's PKS maximum combustion temperature is M-1 896℃, T-2 987℃, T-3 864℃, and M-4 762℃. PKS fuel burn times are longer than OPM and EFB (57 minutes, 28 minutes, and 40 minutes) of the same fuel weight (2.5 kg). The overall PKS -fueled thermal efficiency level is higher than OPM and EFB. Thus, PKS fuel has a high calorific value and a longer burning time, making it suitable for electricity generation.

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Experimental investigation on the propagation of flow and flame in a confined combustion chamber equipped with a single-hole perforated plate

Cited by 11 publications

References 44 publications

Flame propagation behavior of propane–air premixed combustion in a confined space with two perforated plates at different initial pressures

Flame propagation behavior of propane–air premixed combustion in a confined space with two perforated plates at different initial pressures

The Modification of the Perforated Plate in the Fluidized-Bed Combustor to Analyze Heat Convection Rate and Temperature

Effect of Modification Perforated Plate for Combustion Temperature in Fluidized-Bed Combustor

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