Investigating the effects of heat exchanger on flame transfer function in a simplified boiler

N. Hosseini; V.N. Kornilov; O. J. Teerling; I. Lopez Arteaga; Ph. de Goey

doi:10.13140/RG.2.1.3531.6243

Investigating the effects of heat exchanger on flame transfer function in a simplified boiler

N. Hosseini, V.N. Kornilov, O. J. Teerling, I. Lopez Arteaga, Ph. de Goey

Group De Goey

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

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Abstract

The goal of the present work is to investigate the effects the heat exchanger can have on the acoustic response of the flames(flame transfer function) in a boiler. In compact condensing boilers the distance between the burner and heat exchanger is small enough to cause intense interactions. That is why we constructed a simplified CFD model of a boiler to study various cases with different distances between the burner and heat exchanger. Results show that the flame transfer function changes considerably when the flame impinges on the heat exchanger tube. The gain can acquire values above one for low frequencies due to incomplete combustion and the phase can be increased because of flame deformation and stretch. These results help analyze the acoustic behavior of the flames in such situations with more detail.

Original language	English
Title of host publication	COMBURA'15 Combustion Research and Application, 7-8 October 2015, Soesterberg, The Netherlands
Pages	1-2
DOIs	https://doi.org/10.13140/RG.2.1.3531.6243
Publication status	Published - Oct 2015

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10.13140/RG.2.1.3531.6243

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1 Phd Thesis 1 (Research TU/e / Graduation TU/e)

Thermoacoustic instabilities in heating appliances with premixed burner and heat exchanger
Hosseini, N., 9 Jan 2019, Eindhoven: Technische Universiteit Eindhoven. 114 p.
Research output: Thesis › Phd Thesis 1 (Research TU/e / Graduation TU/e)

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title = "Investigating the effects of heat exchanger on flame transfer function in a simplified boiler",

abstract = "The goal of the present work is to investigate the effects the heat exchanger can have on the acoustic response of the flames(flame transfer function) in a boiler. In compact condensing boilers the distance between the burner and heat exchanger is small enough to cause intense interactions. That is why we constructed a simplified CFD model of a boiler to study various cases with different distances between the burner and heat exchanger. Results show that the flame transfer function changes considerably when the flame impinges on the heat exchanger tube. The gain can acquire values above one for low frequencies due to incomplete combustion and the phase can be increased because of flame deformation and stretch. These results help analyze the acoustic behavior of the flames in such situations with more detail. ",

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T1 - Investigating the effects of heat exchanger on flame transfer function in a simplified boiler

AU - Hosseini, N.

AU - Kornilov, V.N.

AU - Teerling, O. J.

AU - Lopez Arteaga, I.

AU - de Goey, Ph.

PY - 2015/10

Y1 - 2015/10

N2 - The goal of the present work is to investigate the effects the heat exchanger can have on the acoustic response of the flames(flame transfer function) in a boiler. In compact condensing boilers the distance between the burner and heat exchanger is small enough to cause intense interactions. That is why we constructed a simplified CFD model of a boiler to study various cases with different distances between the burner and heat exchanger. Results show that the flame transfer function changes considerably when the flame impinges on the heat exchanger tube. The gain can acquire values above one for low frequencies due to incomplete combustion and the phase can be increased because of flame deformation and stretch. These results help analyze the acoustic behavior of the flames in such situations with more detail.

AB - The goal of the present work is to investigate the effects the heat exchanger can have on the acoustic response of the flames(flame transfer function) in a boiler. In compact condensing boilers the distance between the burner and heat exchanger is small enough to cause intense interactions. That is why we constructed a simplified CFD model of a boiler to study various cases with different distances between the burner and heat exchanger. Results show that the flame transfer function changes considerably when the flame impinges on the heat exchanger tube. The gain can acquire values above one for low frequencies due to incomplete combustion and the phase can be increased because of flame deformation and stretch. These results help analyze the acoustic behavior of the flames in such situations with more detail.

U2 - 10.13140/RG.2.1.3531.6243

DO - 10.13140/RG.2.1.3531.6243

M3 - Conference contribution

SP - 1

EP - 2

BT - COMBURA'15 Combustion Research and Application, 7-8 October 2015, Soesterberg, The Netherlands

ER -

Investigating the effects of heat exchanger on flame transfer function in a simplified boiler

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Research output

Thermoacoustic instabilities in heating appliances with premixed burner and heat exchanger

Cite this