The energy efficiencies of various fuel production pathways from well to pump. The efficiencies shown are defined as the energy in a given fuel (available at pumps in vehicle refueling stations) divided by total energy inputs during all Well-to-Pump activities, including the energy content of the fuel. One way to interpret the Well-to-Pump efficiencies in the figure is as the difference between 100% and the energy efficiencies, which roughly represent energy losses during Well-to-Pump stages for making a given fuel available at the pump. As stated in Section 3, Well-to-Pump activities include biomass feedstock production; feedstock transportation and storage; fuel production; and fuel transportation, storage, and distribution. (more…)
The combination of well-to-pump results and the energy use and emissions associated with vehicle operation (also called the pum ...
It shows Well-to-Wheels Greenhouse Gas emissions of the 23 vehicle/fuel systems. For each system, the bottom bar represents CO2 ...
Because different studies have different system boundaries and parametric assumptions, the studies described in Section 7 resulted ...
There are different types of vehicle propulsion systems and the transportation fuels that have been studied for their potential ...
At present, in the United States and worldwide, motor vehicles are fueled almost exclusively by petroleum based gasoline (or re ...
The energy that people use every day comes from many different sources. The resources are divided into two main groups: renewable energy and nonrenewable energy. Renewable energy sources are those that can be used again and again. Renewable energy resources have unlimited supply. (more…)
In Europe, modern renewable energy sources technologies were explored thoroughly for the first time after the oil embargo/ price cr ...
During the US Presidential Election 2008 Campaign, the renewable portfolio standard was one of the main agendas for Presidentia ...
The broad range of home solar energy systems are mostly known as Photovoltaic Systems (PV) or Thin Film Solar Technology. The s ...
The hydrogen can come from various sources including fossil fuels, wind, solar, biomass, nuclear, solar thermo-chemical reactio ...
Renewable energy sources cannot run out and causes so little damage to the environment that its use does not need to be restric ...
As a reaction to these historical perspectives, the building industry has witnessed a certain rise in design responses to regional climatic conditions, as part of a powerful efficiency and energy conservation push since the 1970s. More recently, the zero green house gas emsission and office building has become a design concept as part of strategies to introduce urban renewable energy as an increasing contributor to managing urban energy supplies. (more…)
Hydrogen has many applications when it comes to fuel. It can be used both in internal combustion engines and hydrogen fuel cells. ...
The age of industrialization came into full force through the modern exploration and use of fossil fuels. As one of its most striki ...
The commercialization prospects for fuel cell vehicles depend not only on their performance and cost, but also on how well th ...
All of today’s hydrogen conversion products, demonstration models, and prototypes possess some deficiencies; they cannot yet pr ...
The Solar City approach originally emerged from a new generation of International Energy Agency (IEA) energy research and developme ...
Nuclear energy has some distinct advantages in strengthening the external dimension of energy supply security. These include:
• Nuclear power plants produce electricity domestically. Their capital and labor inputs are also provided domestically. With more than 90% of its inputs in terms of value sourced domestically, it can be considered a largely domestic source of energy and electricity.
• Of course, a majority of OECD countries import part or all of their requirements of uranium plutonium. (more…)
Nuclear fission and fusion Research and Development continues to account for nearly half of the total spending by IEA countries, al ...
The continuous availability and affordability of energy and, in particular, electricity supply is an indispensable condition fo ...
Geopolitical risk refers almost always to primary energy carriers (oil, gas, coal, uranium or renewable energy) since their loc ...
Within the coming years, fossil fuel will be failed back its main role as the ultimate main energy sources. Fossil fuels has kn ...
Following the recent completion of three nuclear power plants, there is now some 9.6 GW of nuclear capacity in the United Kingd ...
Geopolitical risk refers almost always to primary energy carriers (oil, gas, coal, uranium or renewable energy) since their location depends on the vagaries of geology and climate. Production and energy consumption are thus often physically far apart and take place in countries and regions with different histories, cultures and values. Apart from oil & gas exploration and production, all other steps of the energy chain such as refinement or enrichment, energy conversion and distribution can be moved physically closer to the final customer or are, like consumption, directly under the latter’s control. (more…)
Nuclear energy has some distinct advantages in strengthening the external dimension of energy supply security. These include: ...
The continuous availability and affordability of energy and, in particular, electricity supply is an indispensable condition fo ...
For years it was out of desperation that observers have advised and viewed of American energy policy and geopolitical risks regardi ...
The entire concept of energy independence revolves around using the resources within a country. Simply put, it's "Stay within ...
Following the recent completion of three nuclear power plants, there is now some 9.6 GW of nuclear capacity in the United Kingd ...
The future development of energy crops, to the level at which they would replace residues as the major bioenergy fuel source, will be largely dependent on regional factors such as climate change and local energy requirements and emission factors, which will determine their environmental and financial viability. (more…)
Estimation of the future technical potential of biomass as an energy source is dependent on assumptions with respect to land av ...
Bioenergy produced from biomass is sometimes called a carbon-neutral energy source, because the same quantity of carbon released wh ...
Advances in biomass feedstock production are extremely important. These advances have the potential for reducing the final cost ...
Over the last decade, the number of countries researching the potential of biomass and bioenergy for energy services rose rapid ...
The accumulation of carbon within a forest growth cycle can be considered in four stages. The initial establishment stage involves ...
Estimation of the future technical potential of biomass as an energy source is dependent on assumptions with respect to land availability and productivity as well as conversion technologies. With the emergence of energy crops as the major source of biomass fuel, land use conflicts, especially in relation to food production, may arise. However, with efficient agricultural practices, plantations and crops could supply a large proportion of energy needs, with residues playing a smaller role without compromising food production or further intensifying agricultural practices. (more…)
The future development of energy crops, to the level at which they would replace residues as the major bioenergy fuel source, will ...
Bioenergy produced from biomass is sometimes called a carbon-neutral energy source, because the same quantity of carbon released wh ...
The quantification of the actual reduction in green house gases sourcess emissions resulting from the substitution of fossil fu ...
To date, most discussion and research relating to the various of biomass role in mitigating CO2 emissions has been focused around i ...
Over the last decade, the number of countries researching the potential of biomass and bioenergy for energy services rose rapid ...
In recent years, there has been a greater understanding of the role of automotive emissions as environmental pollutants. Sulfur dioxide, nitrogen oxides, and carbon monoxide degrade the earth’s atmosphere and are health hazards. Carbon dioxide adds to the atmospheric buildup of greenhouse gases and in turn accelerates the process of global warming. (more…)
Most alternative fuel vehicles on the road today were originally designed for gasoline, but converted for use with an alternative f ...
The development and blending of gasoline additives and petroleum additivies are undertaken for the most part by the petroleum r ...
Almost all fossil fuels use is by burning them to create energy. Burning process then produces waste products due to impurities in ...
At present, in the United States and worldwide, motor vehicles are fueled almost exclusively by petroleum based gasoline (or re ...
A combination of legislation and technology has helped clean up many of the world’s coal-burning plants. Both developed and develop ...
The most widespread and practical process for capture solar radiation as organic fuels is the growth of virgin biomass. Extremely large quantities of carbon are fixed each year in the form of terrestrial and aquatic biomass. (more…)
Another large source of renewable carbon supplies is waste biomass. It consists of a wide range of materials and includes munic ...
Another large source of renewable carbon supplies is waste biomass. It consists of a wide range of materials and includes munic ...
The future development of energy crops, to the level at which they would replace residues as the major bioenergy fuel source, will ...
The hydrogen can come from various sources including fossil fuels, wind, solar, biomass, nuclear, solar thermo-chemical reactio ...
The accumulation of carbon within a forest growth cycle can be considered in four stages. The initial establishment stage involves ...
The hydrogen can come from various sources including fossil fuels, wind, solar, biomass, nuclear, solar thermo-chemical reactions, and solar photolysis. (more…)
Researchers at the Institute of Chemical Technology have developed a new catalyst that allows to obtain, from bioethanol, hydrogen ...
Hydrogen has many applications when it comes to fuel. It can be used both in internal combustion engines and hydrogen fuel cells. ...
The issues of hydrogen storage run through the hydrogen production, hydrogen transport, supply and demand for end use of hydrog ...
Most production systems try to become first full-scale production begins as small toys and devices of concept. The Horizon hydr ...
With ethanol’s future uncertain, many commentators see the transportation debate evolving into a war between two other technologies ...