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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
ENERGY AND EXERGY ASSESSMENT ON A SMALL ENGINE DRIVEN GENERATOR SET FUELLED WITH DIESEL AND SOYBEAN METHYL ESTER BIODIESEL BLEND
Submission Author:
Ramon Eduardo Pereira Silva , MS , Brazil
Co-Authors:
Isabella Maria Ferreira de Oliveira, Rogerio da Silva Santos, Ramon Eduardo Pereira Silva
Presenter: Ramon Eduardo Pereira Silva
doi://10.26678/ABCM.ENCIT2020.CIT20-0248
Abstract
Energy demand has been for decades in the search of new alternative sources of fuels for the use in engines. Thus it was noticed that the biodiesel of soybean oil has similar properties to the diesel oil as well as it has the advantage of being vegetal origin, renewable, biodegradable and non-toxic. Therefore, this study brings the energy and exergetic analysis of a generator group operating with different fuels, among them the pure diesel (B0) and the methyl ester mixture transesterified of soybean oil and diesel (B25), both were submitted to different points of load. The tests were performed at steady state. Results were obtained regarding fuel energy, thermal efficiency, exhaust gas energy and heat transfer losses. Fuel exergies, exergetic efficiency, exhaust gas exergy, destroyed exergy and the exergy of heat transfer losses were also obtained. It was found that the addition of biodiesel in the mixture provided almost the same energy performance as the B0 and the exergetic performance was similar to the energy, thus accompanying the same performances. No significant variation of efficiencies was found with the increase of biodiesel (reduction of 0.2 to 3.2% in thermal efficiency and reduction of 2.7 to 5.6% in exergetic efficiency).
Keywords
Diesel, biodiesel, Energy Analysis, Exergetic Analysis, Generator set
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