نتایج جستجو برای: fuel effect

تعداد نتایج: 1701913  

2007
Axel Dreher Tim Krieger

We empirically analyze convergence of European producer and consumer prices for diesel fuel and investigate the role of excise taxation. By comparing the speed of convergence of prices and taxes we find a surprisingly fast speed of convergence for consumer prices. While this can in part be explained by fuel tourism, the main driving force is producer price dynamics. Tax convergence contributes ...

2000
David Keith

Geoengineering is the intentional large-scale manipulation of the global environment. The term has usually been applied to proposals to manipulate the climate with the primary intention of reducing undesired climatic change caused by human influences. These geoengineering schemes seek to mitigate the effect of fossil-fuel combustion on the climate without abating fossil fuel use; for example, b...

D. Vashist, M. Ahmad,

Biofuels are playing important role in recent decades as substitutes for petro diesel. Biodiesel derived from vegetable oils are found to give comparable performance and emission characteristics. In this paper a comparative study has been done between two fuels combinations i.e. jatropha and castor. The biodiesel was prepared from neat oils and blends of biodiesel (up till 20%) were prepared...

The goal of this article is to present electrochemical and economic models for a tubular solid oxide fuel cell stack. To carry out this research, first, a complete electrochemical model has been employed for a single cell of the fuel cell stack, and then its activation, ohmic and concentration losses have been obtained. The results show that with the increase of the working temperature and pres...

Journal: :international journal of automotive engineering 0
elfasakhany

the effects of unleaded gasoline and unleaded gasoline–ethanol blends on engine performance and pollutant emissions were investigated experimentally in a single cylinder, four-stroke spark-ignition engine with variable engine speeds (2600–3500 rpm). four different blends on a volume basis were applied. these are e0 (0% ethanol + 100% unleaded gasoline), e3 (3% ethanol + 97% unleaded gasoline), ...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 2012

Mahdi Moghimi Zand Majid Baniassadi, Mehdi Tafazoli Mohammad Riazat Mohsen Mazrouie

In the present study, the effect of porosity on the cathode microstructure (50:50 wt. % LSM: YSZ) of a Solid Oxide Fuel Cell (SOFC) has been examined. A 3-D finite element method for Mixed Ionic and Electronic Conducting Cathodes (MIEC) is presented to study the effects of porosity on cell performance. Each microstructure was realized using the Monte Carlo approach with the isotropic type o...

2007
Rolf Jensen Neil Wu Jose L. Torero

An experimental study to define a practical methodology that will serve to assess the burning of crude oils on a water sub-layer by means of a bench scale procedure is presented. A modified ASTM-E1321 (LIFT) is combined with flash point measurements to extract fuel properties by means of an existing theoretical formulation. The fuel and water layers are treated as a thermally thick material wit...

Journal: :Environmental Management 2008
Johanna Kirkinen Taru Palosuo Kristina Holmgren Ilkka Savolainen

Extensive information on the greenhouse impacts of various human actions is important in developing effective climate change mitigation strategies. The greenhouse impacts of combustible fuels consist not only of combustion emissions but also of emissions from the fuel production chain and possible effects on the ecosystem carbon storages. It is important to be able to assess the combined, total...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید