Effect of hydrogen addition on overall pollutant emissions of inverse diffusion flame

Jing, Miao; Leung, Chun Wah; Cheung, Chun Shun; Huang, Zuohua; Zhen, Haisheng

doi:10.1016/j.energy.2016.03.114

Cited by 15 publications

(6 citation statements)

References 34 publications

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“…Choy et al [7] examined the pollutant emissions of an IDF. The emissions of LPG combustion in an IDF burner is carried out with the addition of hydrogen by Miao et al [8]. Cha et al [9] focused on a recirculating flow structure of a normal diffusion flame and compared with numerical simulation.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of heat transfer characteristics of an inverse diffusion flame in a coaxial tube burner for with and without swirl

Badiger¹,

Katti²,

Anil³

2022

Journal of Thermal Engineering

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Heat transfer by flame jet impingement is widely used in many of the industrial and domestic applications like heating metal bars, scrap melting, shaping the glass, metal slab cutting, domestic cooking and others. Aim of the present experimental work is to study an effect of swirl on a local heat flux distribution of an inverse diffusion flame (IDF) jet impinging on a flat target surface in a coaxial tube burner. The twisted tape of twist ratio 3 (corresponding to the swirl number, S = 0.52) is used to create a swirl in the central air jet of the burner. The flame shapes and heat flux distributions are compared for the with and without swirling IDF under the different air jet Reynolds number (Re a ) of 1000 to 2500, equivalence ratio (ϕ) of 0.4 to 1.3 and a burner-to-impingement plate distance (H) of 10 to 100mm. The distributions of heat fluxes are studied within a radius of 75 mm from the point of stagnation on an impingement plate. Results show that the swirling IDF helps in clean combustion of the fuel with much shorter flame height. Swirling in the flame jet enhances the peak heat flux for the higher air jet Reynolds number for slightly fuel rich conditions of ϕ = 1.1 at the optimal burner-to-target plate distance of 40 mm.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation of heat transfer characteristics of an inverse diffusion flame in a coaxial tube burner for with and without swirl

Badiger¹,

Katti²,

Anil³

2022

Journal of Thermal Engineering

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show abstract

“…The similar kind of study was conducted by Choy et al [8], who studied the emissions and noise radiation for both open jet and an impinging IDF jet. Miao et al [9] investigated the flame behaviour and pollutants of an inverse diffusion flame by the hydrogen addition into the burning LPG. The HC and CO are converted to CO 2 due to hydrogen addition.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer characteristics of an inverse diffusion flame with induced swirl

Badiger¹,

Anil²,

Hindasageri³

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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The flame shapes and heat transfer characteristics of methane swirling inverse diffusion flame jet are studied experimentally in an inverse diffusion flame burner. The twisted tape of 15 mm pitch (corresponding to the twist ratio of 2.5 and swirl number of 0.62) is used to create the swirl in the flame jet. The influence of twisted tape at an air jet Reynolds number varying from 1500 to 3000, equivalence ratio varying from 0.4 to 1.4 and burner surface to impingement plate distance of 10-100 mm, is studied. The heat transfer characteristics from an IDF burner are studied through an evaluation of the average heat flux distribution and its coefficient of variance for the four distinct areas on an impingement plate. Results show that the swirl augments the heat flux distribution by up to 480% for slightly richer than stoichiometric flames. Furthermore, the impact of swirling is observed to boost the uniformity of heat flux distribution.

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“…Choy et al [7] examined the pollutant emissions of IDF. The emissions of LPG combustion in IDF burner are carried out with the addition of hydrogen by Miao et al [8]. Cha et al [9] focused on a recirculating flow structure of a normal diffusion flame and compared with a numerical simulation.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Characteristics of a Coaxial Inverse Diffusion Flame Jet Impingement with an Induced Swirl

Badiger¹,

Katti²,

Tumkur³

2020

IJHT

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Flame jet has a wide range of applications in the industries and also in domestics field. The efforts have been put to enhance the heat transfer and to reduce the emissions from the premixed and inverse diffusion flame burners. Especially, the IDF burner suffers from lack of proper air and fuel mixing, the swirl generated motion from twisted tape would improve the combustion efficiency. Therefore, an aim of experiment is to study the heat transfer characteristics of an inverse diffusion flame (IDF) jet impinging on a flat surface in a coaxial tube burner with swirl. The twisted tape of 15mm pitch creates the swirl in the flame jet (Corresponding to the twist ratio of 3 and swirl number of 0.52). An effect of swirl at air jet Reynolds number of 1000 to 2500 and surface of the burner-to-impingement plate distance (H/da) varying from 2 to 20 is studied at fixed equivalence ratio (ϕ) of 1.1. An average heat flux and peak heat flux are studied for the region of 0<r/da<3 on an impingement plate. From an investigation, it is found that the swirling in the flame jet enhances the average heat flux by up to 179.2%. The maximum average heat flux is found at the optimal burner-to-target plate distance of 8.

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Effect of hydrogen addition on overall pollutant emissions of inverse diffusion flame

Cited by 15 publications

References 34 publications

Experimental investigation of heat transfer characteristics of an inverse diffusion flame in a coaxial tube burner for with and without swirl

Experimental investigation of heat transfer characteristics of an inverse diffusion flame in a coaxial tube burner for with and without swirl

Heat transfer characteristics of an inverse diffusion flame with induced swirl

Heat Transfer Characteristics of a Coaxial Inverse Diffusion Flame Jet Impingement with an Induced Swirl

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