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 ...
Global warming, CO2 emissions, deforestation and loss of biodiversity on the planet are just side effects of our carbon footprint. Like hundreds of organizations to develop initiatives to reduce the effects of human energy consumption, others have simply chosen to ignore the movement. If you want to help Mother Earth, there are ten top list ways to waste of energy that you can avoid: (more…)
Heating and Cooling systems can be a major contributor to a homes energy costs and associated greenhouse gas emissions. For som ...
Spring is here, which means that the summer heat is already here in Arizona. We all know how essential having an effective air ...
Nowadays, a lot more people are increasingly aware of the amount of energy they consumed everyday and what effect it was having ...
Ceiling fans are a popular room addition; comfort can be easily obtained with a flip of a switch. An immediate cooling breeze is cr ...
Don't sweat it out when you don't have to. Got your A/C running and still feel warm? Here are some tips that will help keep you ...
The tourism sector is taking an active role in environmental protection. They are becoming aware of the impact generated by the activity and recognizing that their actions affect the social, economic and environmental fate. Moreover, the culture of social responsibility, conducted increasingly by decision makers of different tourist areas, is becoming a new (more…)
As energy prices increase, industries are more and more aware that energy is an expensive commodity that has to be used effic ...
The pace of innovations in batteries has not matched the remarkably fast evolution in the development of portable electronic techno ...
Prior to the Clean Air Act of 1990, environmental issues regulations were aimed at reducing emissions as they left the exhaust ...
The convention aims not only at stabilizing CO2 emissions in developed countries but also at ultimately reducing man-made CO2 e ...
There are several options that, ultimately, must be integrated when attempting to realize a change in corporate culture: the legal ...
The wind power potentially could produce 40 times more electricity than worldwide energy consumption annually, according to research led by Professor of Planetary Sciences Department of Earth and Harvard University Michael B. McElroy. Only the U.S. has enough wind resources to cover wind technology with 16 times its electricity demand. (more…)
Designers in China have launched the first wind turbine levitating in the world of permanent magnetic levitation (Maglev) in the Wi ...
In 2001, there were 14,000 small wind turbines for home/domestic use in the United States. The market potential for national an ...
During the twentieth century, energy has become much more easily available. Most energy comes from burning fossil fuels (oil, gas, ...
Germany is considered a world leader in wind energy deployment, with electricity production from wind having gone up more than eigh ...
Canary wasted much of the wind power produced with wind farms, the current and anticipated, until they are built pumping stations c ...
Biomass has been a main energy sources in the world since the beginning of civilization. It has been important in development processes, including early stages of industrialization in several countries. In Sweden, for example, the first concerns about preservation date from the seventeenth and eighteenth centuries, resulting from the recognition of the central role played by forests in energy provision. Biomass was also essential in the initial development of the iron industry in Sweden and, later on, the same happened in Brazil, where charcoal is still largely utilized in iron reduction. Biomass remains a major source of energy in many countries. (more…)
Over the last decade, the number of countries researching the potential of biomass and bioenergy for energy services rose rapid ...
The convention aims not only at stabilizing CO2 emissions in developed countries but also at ultimately reducing man-made CO2 e ...
Indoor air quality (IAQ) research deals with the presence, levels, health effects, and control of physical, chemical, and biologica ...
The relationship of gross national product per capita to energy consumption per capita for most countries of the world correlat ...
Bioenergy produced from biomass is sometimes called a carbon-neutral energy source, because the same quantity of carbon released wh ...
Some of alternative fuel sources are by no means new. For centuries people have harnessed the power of running water for a variety of needs, particularly for agriculture or farming. Water wheels were constructed in the Middle East, Greece, and China thousands of years ago, and they were common fixtures on the farms of Europe by the Middle Ages. In the early 21st century hydroelectric dam, which generate electricity from the power of rivers, provide about 9 % of the electricity in the United States. Worldwide, there are about 40,000 such dams. (more…)
Some forms of alternative energy sources are really new; while most of the energy forms are really come form in development and ...
With ethanol’s future uncertain, many commentators see the transportation debate evolving into a war between two other technologies ...
The energy that people use every day comes from many different sources. The resources are divided into two main groups: renewa ...
The most commonly researched and most developed application of using hydrogen as a fuel source is in conjunction with a hydrogen fu ...
During the twentieth century, energy has become much more easily available. Most energy comes from burning fossil fuels (oil, gas, ...