Effects of the preheat layer thickness on surface/submerged flame during porous media combustion of micro burner

Janvekar, Ayub Ahmed; Miskam, Muhamad Azman; Abas, Aizat; Ahmad, Zainal Arifin; Juntakan, T.; Abdullah, M. Z.

doi:10.1016/j.energy.2017.01.056

Cited by 61 publications

(27 citation statements)

References 30 publications

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“…In summary, the experimental results indicate that vertical surface roughness cannot be significantly improved by optimising laser power, scanning speed or hatching spacing to meet the recommended biomedical implant roughness Ra= 1-2 μm [37]. Other parameters such as particle size distribution, layer thickness, and the position of the parts in the building platform have also shown to affect the vertical surface roughness [44][45][46]. Results from the horizontal surface roughness and the dimensional deviation of the MCs clearly indicate that an implant sample cannot simultaneously achieve an optimum dimensional deviation and horizontal surface roughness as shown in Figure 5 and Figure 7.…”

Section: Accepted Manuscriptmentioning

confidence: 95%

Tailoring selective laser melting process for titanium drug-delivering implants with releasing micro-channels

Hassanin

Finet

Cox

et al. 2018

Additive Manufacturing

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The use of drug-delivering implants can minimise implant failure due to infection through a controlled medication release into the surrounding tissues. In this study, selective laser melting (SLM) was employed to manufacture Ti-6Al-4V samples, with internal reservoirs and releasing Micro-channels (MCs) to simulate what could be a drug-delivering orthopaedic or dental implant. Investigations were performed to optimise the design and SLM process

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Section: Accepted Manuscriptmentioning

confidence: 95%

Tailoring selective laser melting process for titanium drug-delivering implants with releasing micro-channels

Hassanin

Finet

Cox

et al. 2018

Additive Manufacturing

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“…The flame temperature also decreased for 30 PPI (pores per inch) SiC foam relative to the 25 PPI SiC foam. The effects of preheat layer thickness on flame in a microporous burner is experimentally investigated by Janvekar et al 28 The results showed that when the 5‐mm preheat layer is used, only surface flame can be seen, while 10‐ and 15‐mm preheat layer can affect both surface and submerged flame zone. Also, they reported that the highest thermal efficiency is related to 10‐mm preheat layer among those of the three thickness.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of the effects of porous wall on flame stability and temperature distribution in a premixed natural gas/air combustion

2020

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In the present analysis, the flame stabilization and temperature distribution within a premixed burner contain porous wall are studied experimentally. The effects of inner diameter, length, and pore density of the porous wall, thermal load, equivalence ratio, and the inlet velocity of the fuel-air mixture on these are studied.The fuel used in this study is natural gas and the porous wall is SiC (silicon carbide) ceramic foam. The experimental results clearly indicate that the axial temperature along the porous wall increases when the inner diameter of the porous wall decreases and its length increases. The porous wall temperature with an inner diameter of 40 mm, length of 66 mm, and pore density of 30 PPI (pores per inch) has the highest temperature among the examined states. The results of studying the effect of the porous wall on flame stability show that the flame stability limit has a direct relationship with the length and pore density of porous wall and an inverse relationship with the inner diameter of the porous wall. Also, it is found that the porous wall has the highest temperature causes the maximum flame stability limit.

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“…It was found that when the gas mixture energy content and heat recovery capacity of the system were increased, higher values of electrical potential, thermoelectric efficiency, and flame temperatures were reached. In recent years, the attention was paid to two‐section porous burners for their favorable flame stabilization . Gao et al systematically put the combustion in a double‐layer burner under different conditions.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, the attention was paid to twosection porous burners for their favorable flame stabilization. [18][19][20] Gao et al [21][22][23] systematically put the combustion in a double-layer burner under different conditions. It showed that the component and diluent's mass fraction greatly affected the stability limit, flame temperature and speed, and pollutant emissions.…”

mentioning

confidence: 99%

Fuel-lean VOCs combustion in a porous burner stacked with alumina balls: A case for ethylene combustion

et al. 2018

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Summary A porous burner stacked in turn with 3‐ and 9‐mm alumina pellets was established to perform C2H4 combustion experiments by acquiring the flammable limits, temperature variation characteristics, combustion wave velocity, pollutant emissions, and treatment efficiency. The burner operated well at equivalence ratios within 0.3 to 0.7. Larger alumina pellets widened the burner's lower flammable limit. As the flame propagated downstream, the higher premixed gas flow velocity and larger alumina pellets, the higher combustion wave velocity, whereas the circumstances were opposite as the flame spread upstream. The combustion temperature increased with the equivalence ratio and premixed gas flow velocity. In response to the effect of the alumina pellet dimension, 3‐mm alumina pellets corresponded to higher combustion temperatures, lower CO emissions, and higher treatment efficiency than those less than 9‐mm conditions.

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Effects of the preheat layer thickness on surface/submerged flame during porous media combustion of micro burner

Cited by 61 publications

References 30 publications

Tailoring selective laser melting process for titanium drug-delivering implants with releasing micro-channels

Tailoring selective laser melting process for titanium drug-delivering implants with releasing micro-channels

Experimental analysis of the effects of porous wall on flame stability and temperature distribution in a premixed natural gas/air combustion

Fuel-lean VOCs combustion in a porous burner stacked with alumina balls: A case for ethylene combustion

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