Compressed Natural Gas
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Life cycle analysis of HCNG light-duty vehicle demonstration project
ABSTRACT The demonstration is an effective initiative to bridge the gap between a premature technology and its large-scale commercialization. A systematic method of LCA was used to perform the well-to-wheel analysis of a CNG light-duty truck operated with 0%, 15%, and 30% blends of hydrogen with compressed natural gas fuel under the system boundary of “per
Matéria (Rio J.). Publicado em: 10/06/2019
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2. Armazenamento de metano à pressão reduzida em carvão ativado sob diferentes condições de temperatura e vazão de carga
RESUMO O armazenamento de metano na forma adsorvida em carvão ativado (ANG - Adsorbed Natural Gas) tem despertado interesse nos últimos anos por empregar baixas pressões quando comparado ao gás natural comprimido (CNG - Compressed Natural Gas) e temperatura ambiente, e ainda por configurar uma alternativa importante à utilização de biometano oriundo d
Matéria (Rio J.). Publicado em: 08/01/2018
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3. Determination of CO2, CH4 and N2O: a Case Study for the City of Rio de Janeiro Using a New Sampling Method
A new sampling method using polypropylene syringes and chemical analysis by gas chromatography was proposed and applied to determine CO2, CH4 and N2O. The samples' stability was evaluated and compared with the stability of the samples in stainless steel canisters and Tedlar® bags. This methodology was applied to a case study in the urban area of the city of
J. Braz. Chem. Soc.. Publicado em: 2016-04
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4. Processing of a LLDPE/HDPE pressure vessel liner by rotomolding
Biaxial rotational molding is a low-pressure process that uses a polymer powder to produce large and/or complex-shaped hollow thermoplastic goods using low cost molds, being very suitable for prototype production. In the present work, liner prototypes (F 78 × 280 mm) made of linear low density (LLDPE) and high density polyethylene (HDPE) blends were produce
Mat. Res.. Publicado em: 08/11/2013
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5. Effects of gas types and models on optimized gas fuelling station reservoir's pressure
There are similar algorithms and infrastructure for storing gas fuels at CNG (Compressed Natural Gas) and CHG (Compressed Hydrogen Gas) fuelling stations. In these stations, the fuels are usually stored in the cascade storage system to utilize the stations more efficiently. The cascade storage system generally divides into three reservoirs, commonly termed l
Braz. J. Chem. Eng.. Publicado em: 2013-06
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6. Introdução de misturas de GNV e hidrogênio (Hidrano) em veículos convencionais no Brasil e seus impactos econômicos, ambientais e energéticos / Introduction of CNG and hydrogen (HCNG) for conventional vehicles and its economic, environmental and energy impacts
Several strategies have been proposed to introduce hydrogen in the economy specifically in the transport sector in order to reduce environmental impacts of conventional fuels. One of the strategies implies in adding hydrogen to compressed natural gas (HCNG), making use of the existing refueling stations and natural gas fleet. Thus the costs and time for the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/07/2012
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7. Studying transmission of fuel storage bank to NGV cylinder in CNG fast filling station
The exact modeling of the fast-fill process of Compressed Natural Gas (CNG) fueled storage bank occurring to Compressed Natural Gas Vehicle (NGV) cylinders is an unintelligible process, and should be thoroughly studied. In this paper, a theoretical model based on mass balance and thermodynamic laws has been developed to study dynamic fast filling process of
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012-12
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8. Estudos em adsorÃÃo de gÃs natural: armazenamento, transporte e purificaÃÃo / Studies of Natural Gas Adsorption: Storage, Transport and Purification
The use of vessels filled with activated carbon to store and transport natural gas (NG) at moderate pressures (about 3.5 MPa) and ambient temperature (about 298 K) has been studied as a potential alternative to compressed natural gas storage at high pressures (ca. 20 MPa). The present study provides an experimental investigation of charge and discharge cycle
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/02/2011
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9. USE OF EXPANDERS FOR GENERATING ELECTRICAL ENERGY IN NATURAL GAS PRESSURE REDUCTION STATIONS / USO DE EXPANSORES PARA GERAÇÃO DE ENERGIA ELÉTRICA EM ESTAÇÕES DE REDUÇÃO DE PRESSÃO DE GÁS NATURAL
The natural gas is compressed to high pressures in order to be transported in the gas pipeline and delivered to the clients at lower pressures, using pressure reduction control valves in an adiabatic process. It can be shown that the same natural gas thermodynamic output state is achieved if the control valves can be substituted by expanders, producing work
Publicado em: 2009
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10. Análise estatística das emissões de CO e HC produzidas por gases da exaustão veicular oriundos de gasolina, GNV e mistura álcool/gasolina
Os veículos automotores são as principais fontes móveis de Monóxido de Carbono (CO) e Hidrocarbonetos não queimados (HC) lançados na atmosfera. Nos últimos anos o acréscimo da frota de veículos no município de Natal-RN vem contribuindo para o aumento das emissões desses gases poluentes. O estudo consistiu de uma análise estatística das emissões
Publicado em: 2009
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11. Estudo das emissões de fontes móveis na região metropolitana de Porto Alegre, Rio Grande do Sul
The present study aims at assessing the influence of pollution from mobile sources on air quality in the Metropolitan Area of Porto Alegre by means of an inventory based on methods applied specifically to vehicular emissions. The study uses the method described by CETESB, based on inventories on vehicular emissions, according to USEPA methodology. Following
Química Nova. Publicado em: 2008
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12. O mercado de gás natural veicular em Curitiba : visão dos taxistas
O tema do presente estudo consiste na análise da demanda do mercado de taxistas de Curitiba frente à possibilidade de utilização de um combustível alternativo menos oneroso e poluente: o Gás Natural Veicular – GNV. O objetivo principal deste trabalho foi de analisar o mercado atual do GNV entre os taxistas de Curitiba, verificando a possibilidade de
Publicado em: 2007