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Efficiency analysis of a diesel generator operating with blends of diesel and biodiesel

Grant number: 17/25885-6
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): May 01, 2018
Effective date (End): April 30, 2019
Field of knowledge:Engineering - Mechanical Engineering - Thermal Engineering
Principal researcher:Claudia Gonçalves de Azevedo
Grantee:Gabriel Baldin Nogueira
Home Institution: Universidade Estadual Paulista (UNESP). Campus de Rosana. Rosana , SP, Brazil

Abstract

Growing concerns about electric energy prices and the search for emergency solutions in eventual cases of power failure arouse the interest of the scientific and industrial community for the use of generators in various segments of society such as industries, hotels, gas stations and hospitals. From the burning of diesel oil in internal combustion engines, generators are able to produce electricity at competitive prices, producing, however, a high amount of pollutants emissions. The biodiesel usage has presented a promising potential as an additive to the diesel oil, both for its renewable characteristic and the considerable reduction both for its renewable characteristic and for the considerable reduction that it causes in the levels of pollutant emissions produced by the diesel cycle engines. Thus, the present work aims to determine the main physical chemical properties of diesel and biodiesel blends, to determine the droplet diameters and cone angle of the sprays produced by the mixtures injector, as well as to evaluate the performance of a generator without mechanical modification, using different concentrations of diesel (S500) and soybean and bovine tallow biodiesel blends. Fuel consumption, specific fuel consumption, energy efficiency and sound intensity emitted by the Branco engine-generator will be determined for different resistive loads. (AU)

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