Exploring Hydrocarbon Depletion
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Revi wrote:We use our small electric car every day. It cost around $5000, and it's made in the USA.
TheAntiDoomer wrote:New Energy-Dense Battery Could Enable Long-Distance Electric Cars
http://www.scientificamerican.com/artic ... ctric-carsNATIONAL HARBOR, Md.—A company founded in the Palo Alto public library has taken a dose of government money and technology and turned it into the most energy-dense battery ever. Envia System's new lithium-ion battery packs roughly twice as much energy per gram as present batteries, the company will announce here at the third annual summit of the Advanced Research Projects Agency—Energy (ARPA–e).
"We achieved 400 watt-hours per kilogram," explains materials scientist Sujeet Kumar, Envia co-founder and chief technology officer. "We have made a 40 ampere cell in a large format that automakers can recognize and use," and one that has been validated by independent energy density tests at the Naval Surface Warfare Center in Crane, Ind.
ian807 wrote:There's about 7 gallons worth in a cubic foot, or about 924 megajoules per cubic foot.
I think the car will change. Why drive a monster around when a small, lightweight car would do? Why own a car at all?
I can understand your frustration about reading about the latest and greatest research happening, but that should not detract from real advancements being made. Real progress takes time and takes place in stages. First you have basic research, where new ideas, ways of thinking, and a general increase in mankind's knowledge. It is not directly commercially applicable. Then comes applied research. This uses basic research to solve a practical problem. Then comes development. This uses applied research for the production of useful materials, devices, etc. Then comes engineering, which uses what you developed into marketable goods and services. You may be hearing about advances being made at many different points of this R&D spectrum. Some may be many years away from a commercial product. Some may be available next Christmas. And some may never see the light of day at all.SilentRunning wrote:Great. Let me know when the things are actually available for sale, as opposed to mere nice sounding claims. When they are, I'll be impressed. Until then, it won't actually propel a vehicle. Vehicles need BATTERIES, not PROMISES OF BATTERIES.
Types of ResearchObjectives and Types of R & D
The objective of academic and institutional R & D is to obtain new knowledge, which may or may not be applied to practical uses. In contrast, the objective of industrial R & D is to obtain new knowledge, applicable to the company's business needs, that eventually will result in new or improved products, processes, systems, or services that can increase the company's sales and profits.
The National Science Foundation (NSF) defines three types of R & D: basic research, applied research, and development. Basic research has as its objectives a fuller knowledge or understanding of the subject under study, rather than a practical application thereof. As applied to the industrial sector, basic research is defined as research that advances scientific knowledge but does not have specific commercial objectives, although such investigation may be in the fields of present or potential interest to the company.
Applied research is directed towards gaining knowledge or understanding necessary for determining the means by which a recognized and specific need may be met. In industry, applied research includes investigations directed to the discovery of new knowledge having specific commercial objectives with respect to products, processes, or services. Development is the systematic utilization of the knowledge or understanding gained from research toward the production of useful materials, devices, systems, or methods, including design and development of prototypes and processes.
At this point, it is important to differentiate development from engineering, which can be defined as utilization of state-of-the-art knowledge for the design and production of marketable goods and services. In other words, research creates knowledge and development designs, and builds prototypes and proves their feasibility. Engineering then converts these prototypes into products or services that can be offered to the marketplace or into processes that can be used to produce commercial products and services.
Revi wrote:I think the car will change. Why drive a monster around when a small, lightweight car would do?
I bet I can go faster and carry more on my vehicle, which doesn't need plugging in, runs on the same food I eat, keeps me fit and cost $600 15 years ago. They sell for around the same price today.
JohnRM wrote:Great, so we can run our cars on coal and Uranium, instead of oil.
this is where I agree with you and rockdoc. While EV (and NG vehicles) are theoretically possible, they do not meet the particular transportation needs of the real world where work is done.JRP3 wrote:Revi wrote:I think the car will change. Why drive a monster around when a small, lightweight car would do?
Until laws change it's not possible for many. I could use a NEV for most of my driving needs, but NEV's can't be used on roads with higher than 35mph speed limits, which means I can't leave my driveway. Also I'd need something that could deal with deep snow for some of the year, or at least I used to, since we've had almost none this winter.
ian807 wrote:Lessee, a gallon of gas contains about 132 megajoules. There's about 7 gallons worth in a cubic foot, or about 924 megajoules per cubic foot. Got a battery with that energy density? Get back to me on that one, eh?
pstarr wrote:[ this is where I agree with you and rockdoc. While EV (and NG vehicles) are theoretically possible, they do not meet the particular transportation needs of the real world where work is done.
EV's don't have to work for every situation to work well for many.
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