Formulação de novos combustíveis base diesel: avaliação de desempenho e emissões
The industry, over the years, has been working to improve the efficiency of diesel engines. More recently, it was observed the need to reduce pollutant emissions to conform to the stringent environmental regulations. This has attached a great interest to develop researches in order to re...
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Diesel Biodiesel Emissões de poluentes Motor diesel Combustível alternativo Diesel microemulsionado Surfactant Biodiesel Pollutant emission Diesel engine Alternative fuel Diesel-based microemulsion CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
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Diesel Biodiesel Emissões de poluentes Motor diesel Combustível alternativo Diesel microemulsionado Surfactant Biodiesel Pollutant emission Diesel engine Alternative fuel Diesel-based microemulsion CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA Fernandes, Manoel Reginaldo Formulação de novos combustíveis base diesel: avaliação de desempenho e emissões |
| description |
The industry, over the years, has been working to improve the efficiency of
diesel engines. More recently, it was observed the need to reduce pollutant emissions to
conform to the stringent environmental regulations. This has attached a great interest to
develop researches in order to replace the petroleum-based fuels by several types of less
polluting fuels, such as blends of diesel oil with vegetable oil esters and diesel fuel with
vegetable oils and alcohol, emulsions, and also microemulsions. The main objective of this
work was the development of microemulsion systems using nonionic surfactants that belong
to the Nonylphenols ethoxylated group and Lauric ethoxylated alcohol group, ethanol/diesel
blends, and diesel/biodiesel blends for use in diesel engines. First, in order to select the
microemulsion systems, ternary phase diagrams of the used blends were obtained. The
systems were composed by: nonionic surfactants, water as polar phase, and diesel fuel or
diesel/biodiesel blends as apolar phase. The microemulsion systems and blends, which
represent the studied fuels, were characterized by density, viscosity, cetane number and flash
point. It was also evaluated the effect of temperature in the stability of microemulsion
systems, the performance of the engine, and the emissions of carbon monoxide, nitrogen
oxides, unburned hydrocarbons, and smoke for all studied blends. Tests of specific fuel
consumption as a function of engine power were accomplished in a cycle diesel engine on a
dynamometer bench and the emissions were evaluated using a GreenLine 8000 analyzer. The
obtained results showed a slight increase in fuel consumption when microemulsion systems
and diesel/biodiesel blends were burned, but it was observed a reduction in the emission of
nitrogen oxides, unburned hydrocarbons, smoke index and f sulfur oxides |
| author2 |
Dantas Neto, Afonso Avelino |
| author_facet |
Dantas Neto, Afonso Avelino Fernandes, Manoel Reginaldo |
| format |
doctoralThesis |
| author |
Fernandes, Manoel Reginaldo |
| author_sort |
Fernandes, Manoel Reginaldo |
| title |
Formulação de novos combustíveis base diesel: avaliação de desempenho e emissões |
| title_short |
Formulação de novos combustíveis base diesel: avaliação de desempenho e emissões |
| title_full |
Formulação de novos combustíveis base diesel: avaliação de desempenho e emissões |
| title_fullStr |
Formulação de novos combustíveis base diesel: avaliação de desempenho e emissões |
| title_full_unstemmed |
Formulação de novos combustíveis base diesel: avaliação de desempenho e emissões |
| title_sort |
formulação de novos combustíveis base diesel: avaliação de desempenho e emissões |
| publisher |
Universidade Federal do Rio Grande do Norte |
| publishDate |
2014 |
| url |
https://repositorio.ufrn.br/jspui/handle/123456789/15909 |
| work_keys_str_mv |
AT fernandesmanoelreginaldo formulacaodenovoscombustiveisbasedieselavaliacaodedesempenhoeemissoes AT fernandesmanoelreginaldo formulationofnewdieselbasedfuelsevaluationofperformanceandemissions |
| _version_ |
1773963174512427008 |
| spelling |
ri-123456789-159092017-11-02T08:11:52Z Formulação de novos combustíveis base diesel: avaliação de desempenho e emissões Formulation of new diesel-based fuels: Evaluation of performance and emissions Fernandes, Manoel Reginaldo Dantas Neto, Afonso Avelino http://lattes.cnpq.br/4396362216028363 http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783215D9 Barros Neto, Eduardo Lins de http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4798645D3 Dantas, Tereza Neuma de Castro http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783139Z0&dataRevisao=null Grilo, Marcelo Bezerra http://lattes.cnpq.br/9758227561901031 Moura, Maria Carlenise Paiva de Alencar http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4702157Y9 Dantas, Michelle Sinara Gregório http://lattes.cnpq.br/3916745350968978 Diesel Biodiesel Emissões de poluentes Motor diesel Combustível alternativo Diesel microemulsionado Surfactant Biodiesel Pollutant emission Diesel engine Alternative fuel Diesel-based microemulsion CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA The industry, over the years, has been working to improve the efficiency of diesel engines. More recently, it was observed the need to reduce pollutant emissions to conform to the stringent environmental regulations. This has attached a great interest to develop researches in order to replace the petroleum-based fuels by several types of less polluting fuels, such as blends of diesel oil with vegetable oil esters and diesel fuel with vegetable oils and alcohol, emulsions, and also microemulsions. The main objective of this work was the development of microemulsion systems using nonionic surfactants that belong to the Nonylphenols ethoxylated group and Lauric ethoxylated alcohol group, ethanol/diesel blends, and diesel/biodiesel blends for use in diesel engines. First, in order to select the microemulsion systems, ternary phase diagrams of the used blends were obtained. The systems were composed by: nonionic surfactants, water as polar phase, and diesel fuel or diesel/biodiesel blends as apolar phase. The microemulsion systems and blends, which represent the studied fuels, were characterized by density, viscosity, cetane number and flash point. It was also evaluated the effect of temperature in the stability of microemulsion systems, the performance of the engine, and the emissions of carbon monoxide, nitrogen oxides, unburned hydrocarbons, and smoke for all studied blends. Tests of specific fuel consumption as a function of engine power were accomplished in a cycle diesel engine on a dynamometer bench and the emissions were evaluated using a GreenLine 8000 analyzer. The obtained results showed a slight increase in fuel consumption when microemulsion systems and diesel/biodiesel blends were burned, but it was observed a reduction in the emission of nitrogen oxides, unburned hydrocarbons, smoke index and f sulfur oxides A indústria, ao longo dos anos, vem trabalhando no sentido de melhorar a eficiência dos motores. Mais recentemente surgiu, também, a necessidade de reduzir as emissões de poluentes para se adequar às severas leis ambientais. Isto tem despertado o interesse de desenvolver pesquisas no sentido de substituir os combustíveis derivados do petróleo por diversos tipos de combustíveis menos poluentes, tais como: misturas de óleo diesel com ésteres de óleos vegetais e óleo diesel com óleos vegetais e álcool, emulsões e microemulsões. Este trabalho tem como objetivo desenvolver sistemas microemulsionados a partir de tensoativos não iônicos dos grupos nonilfenois etoxilados e álcoois láuricos etoxilados, misturas com etanol/diesel e misturas diesel/biodiesel para uso em motores diesel. Em uma primeira fase, visando selecionar os sistemas microemulsionados, foram obtidos diagramas ternários das misturas, sendo os sistemas compostos por: tensoativos não-iônicos, água como fase polar e como fase apolar o diesel e/ou misturas diesel/biodiesel. Os sistemas microemulsionados e as misturas, que representam os combustíveis estudados, foram caracterizados quanto à massa específica, a viscosidade, o índice de cetano e o ponto de fulgor. Também foram avaliados o efeito da temperatura nos sistemas microemulsionados, o desempenho do motor, e as emissões de monóxido de carbono, óxidos de nitrogênio, hidrocarbonetos não queimados e fumaça de todos os sistemas. Os ensaios de consumo específico e das emissões em função da potência foram realizados em um motor de ciclo diesel em uma bancada dinamométrica e o analisador de emissões GreenLine 8000. Os resultados mostraram um pequeno aumento no consumo específico para os combustíveis microemulsionados, nas misturas diesel/biodiesel em relação ao diesel puro, porém com uma redução nas emissões de óxidos de nitrogênio, hidrocarbonetos não queimados, índice de fumaça e óxidos de enxofre 2014-12-17T15:01:52Z 2012-01-25 2014-12-17T15:01:52Z 2011-05-16 doctoralThesis FERNANDES, Manoel Reginaldo. Formulation of new diesel-based fuels: Evaluation of performance and emissions. 2011. 310 f. Tese (Doutorado em Pesquisa e Desenvolvimento de Tecnologias Regionais) - Universidade Federal do Rio Grande do Norte, Natal, 2011. https://repositorio.ufrn.br/jspui/handle/123456789/15909 por Acesso Embargado application/pdf application/pdf application/pdf Universidade Federal do Rio Grande do Norte BR UFRN Programa de Pós-Graduação em Engenharia Química Pesquisa e Desenvolvimento de Tecnologias Regionais |