Effect of syngas fuel compositions on the occurrence of instability of laminar diffusion flame

Piemsinlapakunchon, T. and Paul, M. C. (2021) Effect of syngas fuel compositions on the occurrence of instability of laminar diffusion flame. International Journal of Hydrogen Energy, 46(10), pp. 7573-7588. (doi: 10.1016/j.ijhydene.2020.11.259)

Abstract

The paper presents a numerical investigation of the critical roles played by the chemical compositions of syngas on laminar diffusion flame instabilities. Three different flame phenomena – stable, flickering and tip-cutting – are formulated by varying the syngas fuel rate from 0.2 to 1.4 SLPM. Following the satisfactory validation of numerical results with Darabkhani et al. [1], the study explored the consequence of each species (H2, CO, CH4, CO2, N2) in the syngas composition. It is found that low H2:CO has a higher level of instability, which however does not rise any further when the ratio is less than 1. Interestingly, CO encourages the heat generation with less fluctuation while H2 plays another significant role in the increase of flame temperature and its fluctuation. Diluting CH4 into syngas further increases the instability level as well as the fluctuation of heat generation significantly. However, an opposite effect is found from the same action with either CO2 or N2. Finally, considering the heat generation and flame stability, the highest performance is obtained from 25%H2+75%CO (81 W), followed by EQ+20%CO2, and EQ+20%N2 (78 W).

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Paul, Professor Manosh and Piemsinlapakunchon, Tananop
• Authors: Piemsinlapakunchon, T., and Paul, M. C.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: International Journal of Hydrogen Energy
• Publisher: Elsevier
• ISSN: 0360-3199
• ISSN (Online): 1879-3487
• Published Online: 24 December 2020
• Copyright Holders: Copyright © 2020 The Authors
• First Published: First published in International Journal of Hydrogen Energy 46(10):7573-7588
• Publisher Policy: Reproduced under a Creative Commons License

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
172394		Thermally Driven Heat Pump Based on an Integrated Thermodynamic Cycle for Low Carbon Domestic Heating (Therma-Pump)	Zhibin Yu	Engineering and Physical Sciences Research Council (EPSRC)	EP/N020472/1	ENG - Systems Power & Energy
301784		Next Generation Advanced Gasification Technology	Manosh Paul	Royal Academy of Engineering (RAE)	LTSRF1718\14\45	ENG - Systems Power & Energy