Experimental Analysis of a Small Generator set Operating on Dual Fuel Diesel-Ethanol

Authors

  • Marcel Alex Vailatti Universidade de Caxias do Sul
  • Carlos Roberto Altafini Universidade de Caxias do Sul http://orcid.org/0000-0003-2661-6842
  • Giovani Dambros Telli Área do Conhecimento de Ciências Exatas e Engenharia – Universidade de Caxias do Sul
  • Josimar Souza Rosa Programa de Pós-Graduação em Engenharia Mecânica – PROMEC - UFRGS

DOI:

https://doi.org/10.18226/23185279.v5iss1p1

Abstract

This work aims to analyze the operation of a generator set on single fuel mode with diesel oil, and on dual fuel mode using diesel–ethanol blends. The engine used to realize the experimental analysis was a diesel cycle model, single cylinder, direct injection, air refrigerated and coupled to a three-phase electric generator, whose set capacity was 8.0 kVA. The generated electric energy was dissipated in electrical resistances inside a reservoir with running water. Fuels were blended in different volumetric ratios, using a small portion of vegetable castor oil to promote the homogenization. The percentages of substitutions of diesel oil were by 10% to 50%, increasing by 10% the replacement for each sample. Also, the engine was operated with 100% substitution of diesel oil, i.e., for this condition, the samples were composed of ethanol/castor oil 90/10 (volume/volume), 80/20 and 75/25. The blends of diesel and ethanol did not obtain good performance, mainly in taxes of substitution above 40%, causing combustion failures, operational instability, and increase of fuel consumption, although it has achieved a greatly reduction on opacity percentages. The blends with 100% of substitution of diesel oil obtained good performance except to blend with 90% ethanol, where occurred combustion failures, which caused operational instability. To these conditions, the results achieved are increase of consumption by 17%, decrease of opacity by 79%, decrease of exhaust gas temperature by 3.5% and increase of engine thermal efficiency by 1.3%. At the ethanol – castor oil blends there was a decrease in the percentage of opacity by 96%, decrease of exhaust gas temperature by 17.6%, with a minimum of operational irregularities, although fuel consumption has increased by 52.4% and the engine thermal efficiency has decreased almost 1.7%.

 

http://dx.doi.org/10.18226/23185279.v5iss1p1

Author Biography

Carlos Roberto Altafini, Universidade de Caxias do Sul

possui graduação em Engenharia Operacional Habilitação Máquinas pela Universidade de Caxias do Sul (1975), mestrado em Engenharia Mecânica - Termotécnica pela Universidade Federal de Santa Catarina (1980) e doutorado em Energética - Universita degli Studi di Padova (1998). Atualmente é professor titular da Universidade de Caxias do Sul. Tem experiência na área de Engenharia Mecânica, com ênfase em sistemas térmicos e energia, atuando principalmente nos seguintes temas: simulação de sistemas de conversão de energia, análise de processos de combustão e de gaseificação e aplicação de combustíveis fósseis e renováveis em equipamentos térmicos.

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Published

2017-08-10

How to Cite

Vailatti, M. A., Altafini, C. R., Telli, G. D., & Rosa, J. S. (2017). Experimental Analysis of a Small Generator set Operating on Dual Fuel Diesel-Ethanol. Scientia Cum Industria, 5(1), 1–9. https://doi.org/10.18226/23185279.v5iss1p1

Issue

Vol. 5 No. 1 (2017): Scientia cum Industria

Section

Science, Education and Engineering

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