Modares Mechanical Engineering

Modares Mechanical Engineering

Numerical Study of the Effect of Geometry on the Thermal Performance of a Two-Layer Porous Burner with Biogas Fuel

Document Type : Original Research

Authors
Saeed Abedi
Seyed Abdolmehdi Hashemi
Abolfazl Fattahi
University of Kashan
10.48311/mme.24.12.687
Abstract
Biogas is a low-calorie fuel comprises 50-70% methane and 30-50% carbon dioxide, with small amounts of other particles. Combustion of low-calorie fuels often involves significant challenges related to flame stability in most burners. Combustion of porous media is an effective method of directing flame heat to the input mixture, which can increase flame stability. In most studies, biogas has been used in experimentaly work or numerical simulation with simple geometry. In this paper, researchers simulate a two-layer porous burner with biogas fuel, based on an experimental design, in two dimensions. They evaluate the effect of the burner geometry, which was not investigated in previous researches, on the temperature distribution and the radiation efficiency. The results show that reducing the amount of carbon dioxide increases the burner surface temperature. Additionally, changes in the interface of the porous layers, simulated in two conical and spherical forms in two converging and diverging states, cause changes in the place of flame, the maximum combustion temperature, the temperature of the burner surface, and the radiation efficiency. The maximum combustion temperature and the maximum burner surface temperature occur for the conical geometry in convergent mode. Increasing 10% of carbon dioxide in the biogas fuel reduces the radiation efficiency by 25% on average. The radiation efficiency of the divergent burner is more than the convergent mode, about 37% for conical geometry and about 25% for spherical geometry. The maximum radiation efficiency is achieved when the burner is divergent and the amount of carbon dioxide is 30%.
Keywords
Numerical simulation
Premixed Flame
Porous Medium
Biogas
Radiation Efficiency

Subjects

[1] Administration USEI. International Energy Outlook. 2021.
[2] Deublein D, Steinhauser A. Biogas from waste and renewable resources: an introduction: John Wiley & Sons; 2011.
[3] Mekonen EA, Mekonnen YT, Fatoba SO. Thermodynamic prediction of biogas production and combustion: The spontaneity and energy conversion efficiency from photosynthesis to combustion. Scientific African. 2023;21:e01776.
[4] Kaushik LK, Mahalingam AK, Palanisamy M. Performance analysis of a biogas operated porous radiant burner for domestic cooking application. Environmental Science and Pollution Research. 2021;28(10):12168-77.
[5] Song F, Wen Z, Dong Z, Wang E, Liu X. Numerical study and optimization of a porous burner with annular heat recirculation. Applied Thermal Engineering. 2019;157:113741.
[6] Habib R, Yadollahi B, Saeed A, Doranehgard MH, Li LK, Karimi N. Unsteady ultra-lean combustion of methane and biogas in a porous burner–An experimental study. Applied Thermal Engineering. 2021;182:116099.
[7] Tanaka R, Shinoda M, Arai N. Combustion characteristics of a heat-recirculating ceramic burner using a low-calorific-fuel. Energy Conversion and Management. 2001;42(15-17):1897-907.
[8] Liu Y, Deng Y, Shi J, Liu Y, Wang X, Ge B, et al. Experimental investigation on flame stability and emissions of lean premixed methane–air combustion in a developed divergent porous burner. Journal of Cleaner Production. 2023;405:137070.
[9] De Soete G, editor Stability and propagation of combustion waves in inert porous media. Symposium (International) on combustion; 1967: Elsevier.
[10] Takeno T, Sato K. An excess enthalpy flame theory. Combustion Science and Technology. 1979;20(1-2):73-84.
[11] Brenner G, Pickenäcker K, Pickenäcker O, Trimis D, Wawrzinek K, Weber T. Numerical and experimental investigation of matrix-stabilized methane/air combustion in porous inert media. Combustion and flame. 2000;123(1-2):201-13.
[12] Hashemi SM, Hashemi SA. Flame stability analysis of the premixed methane-air combustion in a two-layer porous media burner by numerical simulation. Fuel. 2017;202:56-65.
[13] Zheng C-H, Cheng L-M, Li T, Luo Z-Y, Cen K-F. Filtration combustion characteristics of low calorific gas in SiC foams. Fuel. 2010;89(9):2331-7.
[14] Francisco Jr R, Rua F, Costa M, Catapan R, Oliveira A. On the combustion of hydrogen-rich gaseous fuels with low calorific value in a porous burner. Energy & Fuels. 2010;24(2):880-7.
[15] Gao H, Qu Z, Tao W, He Y, Zhou J. Experimental study of biogas combustion in a two-layer packed bed burner. Energy & fuels. 2011;25(7):2887-95.
[16] Keramiotis C, Founti MA. An experimental investigation of stability and operation of a biogas fueled porous burner. Fuel. 2013;103:278-84.
[17] Al-Attab K, Ho JC, Zainal Z. Experimental investigation of submerged flame in packed bed porous media burner fueled by low heating value producer gas. Experimental Thermal and Fluid Science. 2015;62:1-8.
[18] Devi S, Sahoo N, Muthukumar P. Experimental studies on biogas combustion in a novel double layer inert Porous Radiant Burner. Renewable Energy. 2020;149:1040-52.
[19] Vafai K. Handbook of porous media: Crc Press; 2015.
[20] Kaviany M. Principles of heat transfer in porous media: Springer Science & Business Media; 2012.
[21] Ergun S. Fluid flow through packed columns. Chemical engineering progress. 1952;48(2):89.
[22] ANSYS Fluent User's Guide. Ansys Inc. 2021.
[23] Fu X, Viskanta R, Gore J. Measurement and correlation of volumetric heat transfer coefficients of cellular ceramics. Experimental Thermal and Fluid Science. 1998;17(4):285-93.
[24] Wei G, Huang P, Xu C, Chen L, Ju X, Du X. Experimental study on the radiative properties of open-cell porous ceramics. Solar Energy. 2017;149:13-9.
[25] Glicksman L, Schuetz M, Sinofsky M. Radiation heat transfer in foam insulation. International journal of heat and mass transfer. 1987;30(1):187-97.
[26] Moro Filho RC, Malalasekera W. An analysis of thermal radiation in porous media under local thermal non-equilibrium. Transport in Porous Media. 2020;132(3):683-705.
[27] Patankar S. Numerical heat transfer and fluid flow: CRC press; 2018.
[28] Smith G, Golden D, Frenklach M, Moriarty N, Eiteneer B, Goldenberg M, et al. GRI Mech 3.0. gas research institute. URL http://www me berkeley edu/gri mech. 1995.
[29] Zuo W, Jiaqiang E, Hu W, Jin Y, Han D. Numerical investigations on combustion characteristics of H2/air premixed combustion in a micro elliptical tube combustor. Energy. 2017;126:1-12.
[30] Qian P, Liu M, Li X, Xie F, Huang Z, Luo C, et al. Combustion characteristics and radiation performance of premixed hydrogen/air combustion in a mesoscale divergent porous media combustor. International Journal of Hydrogen Energy. 2020;45(7):5002-13.
Modares Mechanical Engineering
Volume 24, Issue 12
November 2024
Pages 687-697