Sentences with phrase «fuel combustion in»

You will also find that «Electricity generators consumed 32 percent of total U.S. energy uses from fossil fuels and emitted 40 percent of the CO2 from fossil fuel combustion in 2012.»

The goal is to get people to think about these things, so that we have the time, the science and the technology to develop atmospheric drawdown and sequestration systems and indeed, the technology to eliminate fossil fuel combustion in the open atmosphere entirely.

TLE wrote: «the time, the science and the technology to develop atmospheric drawdown and sequestration systems and indeed, the technology to eliminate fossil fuel combustion in the open atmosphere entirely.»

In conclusion, we have identified strong ethical arguments that support the need to ramp up non-fossil fuel combustion in the United States and other developed countries while implicitly acknowledging that there could be some short - term benefit if coal combustion is replaced by natural gas, a conclusion that only can be reached with better understanding of the methane leakage issues.

Fuel combustion — fossil fuel combustion in high - income and middle - income countries» is a key driver of pollution and that «coal is the world's most polluting fossil fuel, and coal combustion is an important cause of both pollution and climate change.»

«The fundamental way to minimize the risk of Amazon dieback is to control greenhouse gas emissions globally, particularly from fossil fuel combustion in the developed world and Asia,» said Yadvinder Malhi, the lead author from Oxford University.

Let us assume that we commit initially to sequestering just 20 percent of all CO2emitted from fossil fuel combustion in 2010, or about a third of all releases from large stationary sources.

CO2 emissions from fossil fuel combustion in France and Belgium both declined at 3.7 % on average between 1978 - 1988 following the oil crisis of the 1970s: http://www.nature.com/nclimate/journal/v3/n1/full/nclimate1783.html#supplementary-information

The isotope signature of fossil fuel combustion in ambient air was first demonstrated by Hans Suess in 1955.

Inhofe Pulls Out: Senator James M. Inhofe, the Republican of Oklahoma who is the leading defender of unfettered fossil fuel combustion in the Senate, sent his regrets for having to skip giving the keynote talk at the sixth climate conference organized by the Heartland Institute.

What makes the climate predicament even tougher is the uneven nature of human development, and the reality that nearly all of the growth in emissions of greenhouse gases is coming from a near - inevitable burst of fossil fuel combustion in fast - growing developing countries.

Not exact matches

The swept volume of one combustion chamber is calculated («swept volume» being the space available for the fuel mixture before combustion; generally speaking, the more space, the more fuel and the more power produced), then multiplied by the number of cylinders in the engine.

When burned, that can improve combustion in bursts, therefore increasing performance whilst having no influence on the fuel flow limit.

In the other systems, when a rocket carries its own fuel, it also carries with it the oxygen needed for combustion in airless spacIn the other systems, when a rocket carries its own fuel, it also carries with it the oxygen needed for combustion in airless spacin airless space.

Second, analysis of isotopes, which can distinguish among sources of emissions, demonstrates that the majority of the increase in carbon dioxide comes from combustion of fossil fuels (coal, oil and natural gas).

A chemical reaction is initiated between the fuel and the oxidizer in the combustion chamber, and the resultant hot gases accelerate out of a nozzle (or nozzles) at the rearward - facing end of the rocket.

He expects researchers to use the FEL pulses to probe what happens during fuel combustion, how biomolecules behave in gases, and how reactions proceed at solid - gas interfaces.

Despite decades of research, hydrogen fuel cells have failed to replace combustion engines in cars, thanks in large part to the cost of their platinum catalysts, says Signe Kjelstrup at the Norwegian Academy of Science and Letters in Oslo.

In a modeling study of coal, oil, and natural gas, Zhang and Caldeira compared the warming caused by combustion to the warming caused by the carbon dioxide released by a single instance of burning, such as one lump of coal, and by a power plant that is continuously burning fuel.

Smouldering (or smoldering in American spelling) combustion is a flameless form of combustion, deriving its heat from oxidations occurring on the surface of a solid fuel.

Keeling has documented a decrease in oxygen levels that is due to fossil - fuel combustion, which uses up oxygen and releases CO2.

In addition, the ocean has absorbed 30 percent of the carbon dioxide associated with human activities, lessening the climate effects of fossil fuel combustion.

Ten years later, no one knows what was in the cloud of gases released by the combustion of all that jet fuel and building material but science has revealed what was in the dust — cement, steel, gypsum from drywall, building materials, cellulose from paper, synthetic molecules from rugs, glass fibers and human hair from the long decades of the two towers» use, among other items.

Gasoline is a petroleum - derived liquid mixture consisting primarily of hydrocarbons, used as fuel in internal combustion engines.

In addition, its «ecofining» process adds kinks in the chains to prevent them from easily stacking — or gelling — at cold temperatures, producing a diesellike fuel with as much as twice the combustion quality of the petroleum - derived varietIn addition, its «ecofining» process adds kinks in the chains to prevent them from easily stacking — or gelling — at cold temperatures, producing a diesellike fuel with as much as twice the combustion quality of the petroleum - derived varietin the chains to prevent them from easily stacking — or gelling — at cold temperatures, producing a diesellike fuel with as much as twice the combustion quality of the petroleum - derived variety.

Initially, the researchers have focused on the combustion of liquid fuel sprays found in engines, where the extreme pressures and temperatures create an environment that is optically challenging.

They make good fuels because the energy stored in the bonds between carbon and hydrogen is abundant and easy to release in combustion with oxygen.

Envirofit's fix replaces the engine's carburetor, which mixes the air and fuel before they enter the combustion chamber, with a direct in - cylinder fuel - injection system.

The image shows a plug - in hybrid electric vehicle, which also has a fuel tank and a combustion engine, but the technology system works equally well with a purely electric vehicle.

When hydrocarbon - based fuels like methane are burned in normal air, nitrogen gets mixed in with the combustion product — flue gases from conventional gas power stations contain as little as 3 percent CO2 — which makes scrubbing carbon from power plant emissions difficult and expensive.

In the past, numerous studies have identified black carbon aerosols emitted from combustion of fossil fuels and residential biofuels as the dominant light - absorbing aerosol over South Asia.

«And if you can run with the ideal mix between fuel and air, you don't have regions in the combustion chamber that make soot.

«You can change the shape of the combustion chamber, the injection pressure, the number of pulses, how much fuel is in each pulse, the orientation of the injectors, and on and on.

Rocket engines, gas turbines and diesel engines experience conditions in their combustion chamber that exceed the critical conditions of their fuel, and supercritical finely atomized sprays are used to coat tablets in the production of medicines.

He adds: «In theory, you could have a plug - in hybrid with a renewable fuel powered [internal combustion engine] and eliminate the need for petroleum all together.&raquIn theory, you could have a plug - in hybrid with a renewable fuel powered [internal combustion engine] and eliminate the need for petroleum all together.&raquin hybrid with a renewable fuel powered [internal combustion engine] and eliminate the need for petroleum all together.»

NOx gases represent some of the most reactive gases produced from diesel combustion and other fossil fuels, but the emissions limits for nitrogen dioxide are regularly exceeded, especially in urban areas.

The use of alcohol as a fuel for internal combustion engines, either alone or in combination with other fuels, has been given much attention mostly because of its possible environmental and long - term economical advantages over fossil fuel.

«The lower operating temperatures during cold start are due to increasing fuel efficiency in advanced combustion engines, which leaves less energy in the tailpipe exhaust,» said Abhaya Datye, a distinguished professor at UNM's Department of Chemical and Biological Engineering and study co-author.

Other R&D efforts in alternative forms of power focus on developing fuel cells, alternative forms of combustion such as GDI and HCCI, and even the stored energy of compressed air.

Concerns about global warming and oil's imminent demise have caused scientists and policy - makers to look for solutions in both the future and the past: to new technologies such as nuclear fusion, multijunction photovoltaics, and fuel cells — and to traditional energy sources such as water power, wind power, and (sustainable) biomass cultivation (coupled with clean and energy - efficient combustion).

(Even in such a case, however, the Volt would consume some fuel; periodically the car's internal combustion engine automatically starts up and burns some gas in order to perform self - diagnostic tests and keep itself lubricated.)

Som's paper «Comparison of In - Nozzle Flow Characteristics of Naphtha and N - Dodecane Fuels» co-authored with Torelli, indicates, for example, that some fuels under investigation may cavitate or vaporize within the fuel injector before entering the combustion chaFuels» co-authored with Torelli, indicates, for example, that some fuels under investigation may cavitate or vaporize within the fuel injector before entering the combustion chafuels under investigation may cavitate or vaporize within the fuel injector before entering the combustion chamber.

Although fossil - fuel combustion has generated most of the buildup of climate - altering carbon dioxide (CO2) in the atmosphere, effective solutions will require more than just designing cleaner energy sources.

To reduce emissions, GE's Dry Low NOx combustion technology mixes fuel with air before burning it in the combustor.

In the other paper, Perera highlighted how fossil fuel combustion has direct health consequences for children.

«Most scenarios consistent with 2 °C used in the IPCC Fifth Assessment Report largely depend on carbon capture and storage (CCS), both from fossil - fuel combustion and, particularly, bioenergy,» said Andrew.

Global carbon dioxide emissions from fossil fuel combustion and cement production grew 2.3 per cent to a record high of 36.1 billion tonnes CO2 in 2013.

Conventional cars use an air - fuel mixture in which all the oxygen and fuel is burned during combustion.

In comparison, annual CO2 emissions from fossil fuel combustion are a tiny fraction of that, or about 5.7 gigatons.

The reason for this choice is that constant - speed races like the Indianapolis 500, which take place on oval tracks, are better for internal combustion engines because those are most efficient at constant speed, yet waste fuel and create extra pollution in stop - start driving.