Concentrated solar energy is most commonly used for electrical power generation. However, a Colorado company, Sundrop Fuels, has a unique approach to the production of biofuel by that marries the mirrors and tower of concentrated solar power with their process for the production of bio-based fuels.
Instead of burning biomass for the energy needed to create biofuel, Sundrop uses concentrated solar as their energy source to gasify a range of feedstocks including agricultural waste, energy crops, and wood waste. The Sundrop process can produce a range of fuels including gasoline, diesel, and aviation fuel. Many other biofuel processes produce ethanol which has a lower energy density than other fuels, meaning that more of it must be used for an equal amount of work. (Flex-fuel cars get fewer miles per gallon from ethanol than from gasoline, but the ethanol fuel costs less per gallon, and the ethanol is not derived from petroleum.)
Sundrop uses the high temperatures from the concentrated solar array to vaporize the biomass feedstock and form syngas, a mixture of carbon monoxide and hydrogen. As with other biofuel processess, the syngas is the basic building block which is turned into useful fuel.
Sundrop's process has other efficiencies that provide additional benefits. By using solar energy, the process yields 100 to 125 gallons of fuel per ton of biomass, which is more than twice what other biofuel producers obtain. The process also requires far less water, needing only a half gallon of water per gallon of fuel produced, versus 6 or 7 gallons required in other systems. The process also creates electrical power from the waste heat generated in the reaction tower.
One of the only significant drawbacks that the Sundrop process faces is the distance between areas with excellent solar access (and few cloudy days) and ready sources of biomass.
The Sundrop process is expected to be able to create gasoline, without subsidies, for less than $2 per gallon. The company is constructing a pilot plant and aims to have a full, commercial-scale plant with a capacity of 100 million gallons by 2015.
via: Portfolio.com
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written by acuvue oasys, July 26, 2010
written by Slush17, July 27, 2010
It's my understanding that widespread development and implementation of alternative energy and fuels in the U.S. are hindered by an overall corporate fear of failing due to lack of consumer support. Historically, there is enough consumer support for cleaner energy ventures when the price of oil is up; without a government-mandated floor on the lowest price of oil, there is no guarantee (for companies who want to develop alternative fuels/energy) that consumer demand will not disappear once the price of oil goes back down. I'm reading "Hot, Flat, and Crowded" by Thomas L. Friedman. He explains this in detail in chapter 13.
It seems the technology and innovation are available; the only thing lacking right now is consumer demand.
written by Mark Lang, July 28, 2010
written by dude, August 08, 2010
written by Jason Y, September 15, 2010
written by Uncle B, September 21, 2010
China has, up and running, nuclear/electric supplied electric bullet train networks and the associated infrastructures. They produce,as we speak, and oil free, goods, for the world and American markets. Folks within these structures eat primarily veggies and rice!
America has to compete with these Chinese and their tremendous advantages! First the Nuclear factor - almost free energy! Then the social factor! Folks who do not require McMansions, Suburbs or SUV's! Third: These are light bodied folk, living on the least expensive most sustainable foods on earth! Cheaper by far than American fair!
All the synthetic gasoline in the world will not overcome this Asian miracle of efficiency! Face Facts: The American version of a gasoline guzzling car with internal spark ignition engine is the least efficient of all means of transportation! Steel wheel to steel rail transport is a full 400% more fuel efficient, add in the Nuclear/electric energy source and we have a system that beats the American foreign oil in rubber wheeled gasoline engined paradigm by a considerable reach!
Asian pressure on America will not go away! This recession's end marks the beginning of flat out competition for survival with Asian forces! Nuclear development is an absolute factor - Asians build reactors at a rate of ten a year for China alone! We in America simply cannot generate enough bio-mass to equal this force! Grow Hemp, exploit Algae, bio-gas all the sewage you can find! Still, not enough to compete with even one year's energy production in Asian reactors - and they use that power to steal our manufacturing jobs - the very life-source of our nation!
Gasoline production, synthysization, acquisition, is energy folly! America has Solar, Wave, Wind, Hydro, Tidal, Geothermal and Nuclear electricity sources domestically. We must convert from a foreign oil energy based economy to a domestic electric economy , and we must develop all the domestic electricity sources to their fullest.
Some small quantities of domestic oil will always be needed. This is the gap filled by bio-mass/solar fuel production.
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