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Research Article

Numerical analysis of the effect of conical turbulators to heat transfer performance of a liquid fuelled boiler 

Bilal Sungur1, Bahattin Topaloglu*,1, Hakan Ozcan1, Lutfu Namli1

1Department of Mechanical Engineering, Ondokuz Mayis University, Samsun, Turkey

Keywords

Abstract

Spray combustion,

Numerical modeling, 

Conical turbulators, 

Temperature distributions


In this study, increasing the efficiency of liquid fuelled smoke tube boilers used for domestic heating was researched. In this context, turbulators with conical geometries placed to smoke tubes of boiler and effects on flame structure and heat transfer were investigated numerically. Calculations were carried out at two dimensional axisymmetric conditions and Fluent was used as the computational fluid dynamics software. In all cases, the standard k-ε model was used for modeling the turbulent flow and the species transport model was used for modeling the combustion. Based on the results of these turbulators were evaluated for each condition. Besides, temperature and stream function distribution and pressure drop were investigated according to the arrangement of turbulators and which number of turbulator would be the most appropriate at boilers was discussed. Increasing the number of turbulators from zero to three decreased the exhaust temperatures 15 K from 365 K to 350 K, and consequently the efficiency of the boiler was increased. Yet the turbulators inserted into smoke tube increased the pressure losses insignificantly from 20 to 23.5 Pa.

 © 2017 MIM Research Group. All rights reserved.

DOI: http://dx.doi.org/10.17515/resm2016.53me0621                          Full Text

LATEST News

10/06/2018 Citation Ratio: First 3 Volumes of our journal, with 36 articles, are cited 35 times by journals indexed in SCI-Expanded. 


11/05/2018 Editors Wanted: Our journal seeks for new team members in the editor position. More info is here.


11/05/2018 Open for Special Issue Proposals: The journal of RESM is open to proposals for special issues on emerging related topics. More info is here.


26/03/2018 Collaboration for UKMK 13: Editorial Board of our journal and Organizing Committee of 13. UKMK have agreed to collaborate. Extended versions of the selected papers from the conference will be published in our journal. 



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