Abstract
This study investigates combustion characteristics of liquid hydrocarbon fuel (n-heptane, c7h16) under different operating conditions. In the paper, we designed a burner consisting of a stainless steel capillary which is used to dump the fuel and a larger stainless steel tube (or quartz tube) used as a combustion chamber. The inner diameter (ID) of the capillary is 0.24 mm, the inner and external diameter of the larger tube is 4 and 6 mm, respectively. According to the experimental results, the combustion process reaches a stable status after about 100 s. Wall temperature distribution and combustion products are analyzed under conditions with different equivalence ratios, gas flow velocities and materials. As equivalence ratio (ER) whose range is in 0.56–1.08 increases, the wall temperature declines, and wall temperature gradient increases slightly. The range of gas flow velocity is in 0.6–1 m/s, the overall trend of wall temperature distribution is the second point from left boundary as a line, the wall temperature distribution of the four points in the right side increases with the flow velocity increasing, but the left point is rapidly declining. When the burner made of stainless steel, the wall temperature distribution varies slightly due to the larger thermal conductivity of stainless steel than that of quartz, which makes the heat transfer in stainless steel faster and the temperature distribution is more uniform. The thermodynamic calculation software is also used to study the compositions of combustion products. In a word, this structure of the burner shows poor combustion characteristics, we should change the structure and the experimental conditions to achieve better combustion characteristics in the future.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Jiang LQ, Zhao DQ. Development of a self-thermal insulation miniature combustor. Energy Convers Manage. 2009;50:1308–13.
Jun H, Hong X. A number of studies of micro power system dynamics and progress. Res Dev World Sci Technol. 2005;1(1):5–9.
Zhou J, Wang Y. Improvement of micro-combustion stability through electrical heating. Appl Therm Eng. 2009;29:2373–8.
Sadasivuni V, Agrawal AK. A novel meso-scale combustion system for operation with liquid fuels. Proc Combust Inst. 2009;32:3155–62.
Kim KB, Kwon OC. Studies on a two-staged micro-combustor for a micro-reformer integrated with a micro-evaporator. J Power Sources. 2008;182:609–15.
Liedtke O, Schulz A. Development of a new lean burning combustor with fuel film evaporation for a micro gas turbine. Exp Therm Fluid Sci. 2003;27:363–9.
Maruta K, Kataoka T. Characteristics of combustion in a narrow channel with a temperature gradient. Proc Combust Inst. 2005;30:2429–36.
Deng W, Klemic JF. Liquid fuel micro-combustor using micro-fabricated multiplexed electro-spray sources. Proc Combust Inst. 2007;31:2239–46.
Russo S, Gomez A. Physical characterization of laminar spray flames in the pressure range 0.1–0.9 MPa. Combust Flame. 2006;145:339–56.
Li Y-H, Chao Y-C. Combustion in a meso-scale liquid-fuel-film combustor with central-porous fuel inlet. Combust Sci Technol. 2008;180:1900–19.
Li Y-H, Chao Y-C. Progress in miniature liquid film combustors: double chamber and central porous fuel inlet designs. Exp Therm Fluid Sci. 2008;32:1118–31.
Mattioli R, Pham TK. Secondary air injection in miniature liquid fuel film combustors. Proc Combust Inst. 2009;32:3091–8.
Pham TK, Dunn-Rankin D. Flame structure in small-scale liquid film combustors. Proc Combust Inst. 2007;31:3269–75.
Hong Sheng L, Mao Zhao X. Experimental study of liquid spray combustion in porous media. J Eng Thermo Phys. 2009;30(3):521–4.
Acknowledgments
This work is supported by the national nature science foundation of china (No.50906004). This work is supported by the Ph.D. Programs Foundation of Ministry of Education of China (No.200800071020).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 Springer-Verlag Berlin Heidelberg & Tsinghua University Press
About this paper
Cite this paper
Yang, F., Li, J., Zhou, Z., Zhang, X., Wang, N. (2013). Experimental Study on the Combustion Characteristics of Liquid Fuel in the Straight Tubes. In: Qi, H., Zhao, B. (eds) Cleaner Combustion and Sustainable World. ISCC 2011. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30445-3_115
Download citation
DOI: https://doi.org/10.1007/978-3-642-30445-3_115
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-30444-6
Online ISBN: 978-3-642-30445-3
eBook Packages: EnergyEnergy (R0)