Comparative Exergy Analysis of Fuel Additives Containing Oxygen and HC based in a Spark-Ignition (SI) engine

Hakan Özcan, Abdülvahap Çakmak
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Abstract


The effects of fuel additives have been investigated based on the second law (exergy analysis) of thermodynamic in an SI engine. Exergy terms such as the total cylinder exergy, exergy transfers via heat transfer and work, fuel chemical exergy and irreversibility were computed for closed part of the engine cycle. Additionally, the exergy distributions, the brake power, brake specific fuel consumption (BSFC), first (energy) and second law (exergy) efficiencies were determined. The experimental data, especially the measured cylinder pressure data, were used to calculate the exergy terms with a home-made code. Test results showed that when compared with gasoline operation, the peak cylinder pressure for M10, E10, and S10 was increased by 18.65%, 12.75% and 15.52%, respectively, and also shifted towards to TDC. In addition, the energy and exergy efficiency decreased with the addition of methanol, ethanol, and solketal. The maximum reduction in the exergy efficiency occurred for the S10, and this reduction was determined as about an 8.42%. The results also revealed that the gasoline blends containing a 10% methanol, ethanol, and solketal were an unfavorable choice from the second-law perspective, due to the reduction in the exergy.

Keywords


Performance;Additives;Solketal; Gasoline;Exergy Analysis

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References


M. Abu-Zaid, O. Badran, J. Yamin, "Effect of Methanol Addition on the Performance of Spark Ignition Engines", Energy & Fuels, 18, 312-315, 2004.

M. Al-Hasan, "Effect of ethanol–unleaded gasoline blends on engine performance and exhaust emission", Energy Conversion and Management, 44 1547-1561, 2003.

S. Babazadeh Shayan, S.M. Seyedpour, F. Ommi, S.H. Moosavy, M. Alizadeh, "Impact of Methanol–Gasoline Fuel Blends on the Performance and Exhaust Emissions of a SI Engine", International Journal of Automotive Engineering, 1, 219-227, 2011.

A. Bilgin, İ. Sezer, "Effects of Methanol Addition to Gasoline on the Performance and Fuel Cost of a Spark Ignition Engine", Energy & Fuels, 22, 2782-2788, 2008.

R.C. Costa, J.R. Sodré, "Hydrous ethanol vs. gasoline-ethanol blend: Engine performance and emissions", Fuel, 89, 287-293, 2010.

P. Danaiah, P.R. Kumar, D.V. Kumar, "Effect of methanol gasoline blended fuels on the performance and emissions of SI engine", International Journal of Ambient Energy, 34, 175-180, 2013.

W.-D. Hsieh, R.-H. Chen, T.-L. Wu, T.-H. Lin, "Engine performance and pollutant emission of an SI engine using ethanol–gasoline blended fuels", Atmospheric Environment, 36, 403-410, 2002.

M. Koç, Y. Sekmen, T. Topgül, H.S. Yücesu, "The effects of ethanol–unleaded gasoline blends on engine performance and exhaust emissions in a spark-ignition engine", Renewable Energy, 34, 2101-2106, 2009.

S. Liu, E.R. Cuty Clemente, T. Hu, Y. Wei, "Study of spark ignition engine fueled with methanol/gasoline fuel blends", Applied Thermal Engineering, 27, 1904-1910, 2007.

I. Schifter, L. Diaz, R. Rodriguez, J.P. Gómez, U. Gonzalez, "Combustion and emissions behavior for ethanol–gasoline blends in a single cylinder engine", Fuel, 90, 3586-3592, 2011.

C.-W. Wu, R.-H. Chen, J.-Y. Pu, T.-H. Lin, "The influence of air–fuel ratio on engine performance and pollutant emission of an SI engine using ethanol–gasoline-blended fuels", Atmospheric Environment, 38, 7093-7100, 2004.

H.S. Yücesu, A. Sozen, T. Topgül, E. Arcaklioğlu, "Comparative study of mathematical and experimental analysis of spark ignition engine performance used ethanol–gasoline blend fuel", Applied Thermal Engineering, 27, 358-368, 2007.

H.S. Yücesu, T. Topgül, C. Çinar, M. Okur, "Effect of ethanol–gasoline blends on engine performance and exhaust emissions in different compression ratios", Applied Thermal Engineering, 26, 2272-2278, 2006.

C.J.A. Mota, C.X.A. da Silva, N. Rosenbach, J. Costa, F. da Silva, "Glycerin Derivatives as Fuel Additives: The Addition of Glycerol/Acetone Ketal (Solketal) in Gasolines", Energy & Fuels, 24, 2733-2736, 2010.

E. Alptekin, M. Canakci, "Performance and emission characteristics of solketal-gasoline fuel blend in a vehicle with spark ignition engine", Applied Thermal Engineering, 124, 504-509, 2017.

E. Alptekin, "Emission, injection and combustion characteristics of biodiesel and oxygenated fuel blends in a common rail diesel engine", Energy, 119, 44-52, 2017.

M.R. Nanda, Z. Yuan, W. Qin, H.S. Ghaziaskar, M.-A. Poirier, C.C. Xu, "Thermodynamic and kinetic studies of a catalytic process to convert glycerol into solketal as an oxygenated fuel additive", Fuel, 117, 470-477, 2014.

İ. Sezer, A. Bilgin, "Effects of charge properties on exergy balance in spark ignition engines", Fuel, 112, 523-530, 2013.

İ. Sezer, İ. Altin, A. Bilgin, "Exergetic Analysis of Using Oxygenated Fuels in Spark-Ignition (SI) Engines", Energy & Fuels, 23, 1801-1807, 2009.

H. Feng, C. Zhang, M. Wang, D. Liu, X. Yang, C.-f. Lee, "Availability analysis of n-heptane/iso-octane blends during low-temperature engine combustion using a single-zone combustion model", Energy Conversion and Management, 84, 613-622, 2014.

C.D. Rakopoulos, E.G. Giakoumis, "Second-law analyses applied to internal combustion engines operation", Progress in Energy and Combustion Science, 32, 2-47, 2006.

W.L.R. Gallo, L.F. Milanez, "Exergetic Analysis of Ethanol and Gasoline Fueled Engines", in, SAE International, 1992.

J.A. Caton, "On the destruction of availability (exergy) due to combustion processes — with specific application to internal-combustion engines", Energy, 25, 1097-1117, 2000.

A. Elfasakhany, "Performance and emissions of spark-ignition engine using ethanol–methanol–gasoline, n-butanol–iso-butanol–gasoline and iso-butanol–ethanol–gasoline blends: A comparative study", Engineering Science and Technology, an International Journal, 19, 2053-2059, 2016.

W.W. Pulkrabek, "Engineering fundamentals of the internal combustion engine", Pearson Prentice Hall, 2004.

R.J. Moffat, "Describing the uncertainties in experimental results", Experimental Thermal and Fluid Science, 1, 3-17, 1988.

J.A. Caton, "A Review of Investigations Using the Second Law of Thermodynamics to Study Internal-Combustion Engines", in, SAE International, 2000.

İ. Sezer, A. Bilgin, "Mathematical analysis of spark ignition engine operation via the combination of the first and second laws of thermodynamics", Proceedings of the Royal Society A: Mathematical, Physical and Engineering Science, 464, 3107-3128, 2008.

J.A. Caton, "An Introduction to Thermodynamic Cycle Simulations for Internal Combustion Engines", Wiley, 2015.

A. Çakmak, A. Bilgin, "Exergy and energy analysis with economic aspects of a diesel engine running on biodiesel-diesel fuel blends", Int. J. Exergy, 24, 151-172, 2017.




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ISSN: 2146-9067