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1 December, 2003
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Research and Current Activities |
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One of the major opportunities to reduce emissions from energy end-use and reverse America's growing dependence on foreign oil is to transform our Nation's fossil fuel dependent economy to a clean hydrogen economy. In a significant step toward this goal, President Bush established the FreedomCAR partnership with major U.S. automakers and the Hydrogen Fuel Initiative to help facilitate the commercialization of hydrogen-powered fuel cell vehicles by 2015. Other opportunities to reduce emissions exist in almost every segment of the economy where there are vast technical possibilities to improve energy end-use efficiency. For example, "superconducting" materials can almost eliminate the loss of electricity flowing through typical transmission lines. Also, energy storage technologies such as batteries, flywheel storage, superconducting magnetic storage, supercapacitors, and others, can improve the efficiency and reliability of the electric utility system by reducing the requirements for spinning reserves to meet peak power demand. Therefore, we achieve better use of baseload generation and enable greater use of intermittent renewable energy technologies.
With an expanding global economy, accompanied by advancing technology, the next couple of decades will likely see significant efficiency gains in most industrialized countries and potentially greater improvements in transition economies. Improving energy end-use will reduce energy consumption and associated emissions and reduce vulnerability to supply disruptions, price spikes and threats to electricity infrastructure. Technology innovation in transmission and distribution, including such areas as high-temperature superconductivity, has the potential to help alleviate these problems. It can create a more reliable, robust electric grid with greater efficiency, relibility and security. FreedomCAR
The C-A-R in FreedomCAR stands for Cooperative Automotive Research. DOE is leading this ambitious, cost-shared, government-industry R&D partnership with the U.S. Council of Automotive Research, a cooperative research organization formed by Ford Motor Company, General Motors Corporation, and the DaimlerChrysler Corporation. FreedomCAR's goal is the development of cars and trucks that are:
Emissions from transportation will decline significantly as such cars and trucks replace those in today's fleet. DOE and its partners are pursuing R&D in fuel cells, hydrogen production and storage, and safety.
Fuel cell vehicles represent a radical departure from vehicles with conventional internal combustion engines. Automobiles powered by pure hydrogen fuel cells emit no pollution and no CO2. The only exhaust is pure water. Fuel cell vehicles can be fueled with pure hydrogen gas stored onboard in high-pressure tanks or other storage systems. They also can be fueled with hydrogen-rich fuels-such as methanol, natural gas, or even gasoline- that are converted into hydrogen gas by an onboard device called a "reformer." Before fuel cell vehicles make it to local auto dealerships, significant R&D is required to reduce cost and improve performance. Furthermore, effective ways must be found to produce and store hydrogen and other fuels. In addition to the President's FreedomCAR Initiative, a number of other promising climate change technologies are being pursued, including advanced heavy-duty vehicle technologies, zero energy homes and commercial buildings, solid-state lighting, and superconductivity. Advanced Heavy-Duty Vehicle TechnologiesThe Department of Transportation (DOT) supports heavy-duty vehicle technology R&D ranging from locomotives to large trucks to inter-city buses. Some of the most exciting work involves fuel cell transit buses, which run on set routes, refuel at a limited number of locations, and are maintained by expert technicians, making them ideal for testing new technology.
A recent DOT and DOE collaboration proved the concept of a viable fuel cell bus. DOT has extended its efforts and plans to have 13 buses in demonstration projects nationwide by the end of 2004. These efforts are helping to lay the foundation for the commercial viability of heavy-duty vehicle fuel cells and their supporting infrastructure. Zero Energy Homes & Commercial Buildings
DOE's Zero Energy Homes (ZEH) concept is bringing a new approach to U.S. homebuilders. ZEH combines revolutionary, energy-efficient construction techniques and appliances with commercially available renewable energy technologies such as solar-water heating and solar electricity. The current goal is to enable new homes to perform at least 50 percent more efficiently than homes built to current minimum efficiency standards, but the longer-term goal is to construct net "zero-energy" building systems. Solid-State Lighting
DOE's solid state lighting research may produce dramatic changes in lighting technology that will fundamentally alter the way we view artificial light. Lighting currently accounts for about 20 percent of U.S. electricity consumption. The most widely used sources of artificial light are incandescent and fluorescent lamps. Solid-state lighting is a new technology that has the potential to be 10 times more energy efficient than incandescent lighting. Accordingly, this technology could revolutionize the illumination of homes, offices, and public spaces. SuperconductivitySuperconductivity has the potential to revolutionize our electric transmission systems in the same way fiber optics revolutionized the communications industry. Unlike conventional wires made of materials such as copper, superconducting wires made of advanced materials have the ability to carry large electrical current without resistance losses. High Temperature Superconductors (HTS) conduct electricity with extremely high efficiency. When an electrical conductor is cooled sufficiently, electrical resistance disappears, which allows a very large electrical current to flow through it.
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