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

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

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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 languageEnglish
Title of host publicationCOMBURA'15 Combustion Research and Application, 7-8 October 2015, Soesterberg, The Netherlands
Pages1-2
DOIs
Publication statusPublished - Oct 2015

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    Hosseini, N., Kornilov, V. N., Teerling, O. J., Lopez Arteaga, I., & de Goey, P. (2015). Investigating the effects of heat exchanger on flame transfer function in a simplified boiler. In COMBURA'15 Combustion Research and Application, 7-8 October 2015, Soesterberg, The Netherlands (pp. 1-2) https://doi.org/10.13140/RG.2.1.3531.6243