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Figuring Out How to Absorb 36B Gallons of Biofuel
27 February 2008
The US Energy Independence and Security Act of 2007 (EISA) mandates, among its many components, an aggressive ramp-up in the use of renewable fuels, culminating in a 36 billion gallon renewable fuel standard (RFS) by 2022. Of that, corn ethanol production is capped at 15 billion gallons per year starting in 2015; the remainder is expected to be provided by “advanced biofuels”, the majority of which are cellulosic biofuels. (Earlier post.)
That much ethanol poses the challenge of how to use it. Accordingly, the Department of Energy Office of Energy Efficiency and Renewable Energy’s Office of Vehicle Technologies (OVT) has quickly ramped up its financial support for research to figure out the best solutions for absorbing that quantity of ethanol into the US market. The status of the various projects in this area were presented during this week’s Annual Merit Review. (Earlier post.)
In 2007, the US consumed about 144 billion gallons of motor gasoline. The DOE’s Energy Information Administration (EIA) projects in the early release version of its Annual Energy Outlook 2008 that motor gasoline consumption will increase to about 167 billion gallons in 2022. (This projection is being revised given the increase in CAFE mandated as another component of EISA.)
But even assuming a universal 10% ethanol blending in the fuel pool (E10)—which the entire gasoline-fueled fleet could handle with no impact on vehicle systems—that still leaves roughly 20-21 billion gallons to be used.
The 36 billion gallons of renewables by 2022 is a substantial challenge, when you look at absorption rates.
—Stephen Goguen, Supervisory Engineer, OVT
OVT is funding efforts on two paths to increase ethanol consumption:
Path A is to saturate the E10 markets and to significantly expand E85 markets at a greatly accelerated pace relative to today through the optimization of E85 use. The current E85 pathway won’t deliver the consumption result—there are too few vehicles, and not enough fueling stations.
Path B is to verify intermediate blends of gasoline to use up to 15% or 20% ethanol (E15, E20) and to let market forces drive supply distribution. Currently, the EPA does not register any ethanol fuel blend above E10 or below E85.
Optimizing Engines for E85. OVT has six E85 engine optimization projects underway, with an aggregate $2,275,283 in funding. The purpose of all the projects is to develop and to demonstrate an overall engine hardware and control system implementation that minimizes the fuel economy penalty of about 27% currently seen when bi-fueled ethanol gasoline engines are run on high percentage ethanol blends.
(Or, as one of the technical presenters at the Merit Review said, if you’re paying for your own gas, you’re not filling up with E85.)
One of the projects (the oldest of the group) is headed by Oak Ridge National Laboratory, the other five are led by automakers and suppliers: Delphi, General Motors, Bosch, Mahle and Ford. These later projects mostly began in October 2007, with one (Mahle) just starting up in January 2008. The basic approaches in five of the engine optimization projects are very similar, exploiting the properties of ethanol (higher octane, high latent heat of vaporization) through technologies such as a variable compression ratio, direct injection and turbocharging, while Ford is taking a different path by overlaying work with Ethanol Boosting Systems (earlier post), an MIT spin-off, in its project.
Delphi and partner Wayne State University are seeking to optimize an engine for E85 uses through boosting, spray optimized direct injection, a variable compression ratio and a variable valvetrain. Emissions are not to be affected negatively—the team is working to ULEV.
The work is based on a GM Ecotec 2.0L four-cylinder DI turbocharged production engine. Delphi is working on and optimizing:
The piston (as part of its work on the variable compression ratio).
A two-step cam device with high-lift long duration and low-lift shorter duration cams. The two-step allows switching between modes.
Cam phasing. This is a critical part of the project, as Delphi plans to deliver the variable compression ratio as an effective ratio with cam phasers and the two-step cam device. In other words, Delphi will increase the engine’s base compression ratio to higher ethanol-oriented levels and then avoid detrimental effects such as knock when the engine is burning gasoline by lowering the effective compression ratio using variable valve actuation.
Fuel injectors. Supporting a dynamic linear range is extremely important as is the spray characteristics.
The ECU.
An ethanol sensor. Virtual sensing is not adequate to support the precision the team requires.
Even though the three-year research project just began in late 2007, Delphi believes this could be brought to production as soon as the 2011 model year.
GM is working with Ricardo, using turbocharging, direct injection and cam phasing (Ko-Jen Wu from GM Powertrain said that those two technologies are so synergistic with turbocharging that their recommendation to management is to introduce all three in one package from now on), and cooled EGR under heavy load conditions.
Overall, GM thinks it can deliver a 15% improvement in fuel efficiency over the FTP cycle.
Bosch is working with Ricardo and the University of Michigan. Bosch and Ricardo have already jointly developed an advanced turbo-charged, direct injection V-6 gasoline engine system—DI BOOST (earlier post)—and both saw potential in leveraging that work with flex fuels.
The E85 project uses the GM Ecotec 2.0L SIDI turbocharged engine with VVT and a high-pressure (200 bar) injection system, and delivers an optimized effective compression ratio using boost control and VVT. The partners are also altering the transmission shift pattern to optimize for ethanol content in the fuel.
Their target is similar fuel economy with either gasoline or E85, while delivering higher performance with E85.
Mahle, working with Visteon, Argonne National Laboratory, and Michigan State, only got started in January. This group intends to use boosting, direct injection, cooled EGR, closed loop combustion control and low pressure direction injection (the last two from Visteon) in its solution.
The team, although very early in the program, is estimating benefits of 25-30% improvement in thermal efficiency over existing baseline engines, thereby offsetting the E85 efficiency hit.
Ford is working with AVL and Ethanol Boosting Systems (EBS) on its optimized engine application. This engine is targeted at the Ford F-Series trucks and is intended to demonstrate an improvement of fuel efficiency of 15-20% for E85.
The approach is to use a downsized, turbocharged, relatively high compression ratio V-8 with high low-end and mid-range torque, combined with an optimized transmission to support engine down-speeding at lower vehicle speeds.
Atop this, the team will overlay the EBS system tank, which is based on the concept of having gasoline port fuel injection and E85 direct injection in the same engine. At cold starts and light loads, the system uses PFI; at higher loads, it injects E85 directly only as required to avoid knock.
According to Bob Stein from Ford, a target 5.0 liter engine in the F-series would consume 53 gallons of gasoline every 1,000 miles when running gasoline. As a conventional flex-fuel engine running E85, the 5.0L would consume 74 gallons every 1,000 miles. But with a 5.0L EBS engine, the system would require 50.4 gallons of gasoline, plus 0.5 gallon of E85. (Or, as Ford put it, the 0.5 gallon of E85 displaces 2.6 gallons of gasoline.
In addition to the technical challenges of the system, such a solution would also face the challenge of asking consumer to fill two tanks, Stein noted.
Oak Ridge National Laboratory. ORNL has two components to its program, one, a Cooperative Research and Development Agreement (CRADA) with Delphi working with variable compression ratios, cam phasing, boosting and direct injection; and the other, an open project using a Saab BioPower FFV with an initial focus on lean combustion with ann advanced Ag/Al2O3 lean NOx catalyst for aftertreatment.
Intermediate Ethanol Blends. The DOE began developing an intermediate ethanol blend test plan in March 2007, according to Wendy Clark of the DOE National Renewable Energy Laboratory (NREL). NREL began looking at non-flexible fuel vehicles last fall, and are expanding into small engine work as well.
There are seven active vehicle tests underway, and four small engine tests; the key questions being explored are the impacts of E15/E20 on legacy vehicles with respect to:
- Emissions;
- Catalyst durability;
- Drivability; and
- Materials compatibility;
NREL is planning to having 155 vehicles in fleet testing by May.
Very limited observations from ongoing tests with new vehicles confirms prior studies suggesting that drivers of new vehicles may not notice any immediate impact with E20, said Clark. That cannot be extrapolated to older vehicles, so the new test data is required. Additionally, longer-term performance effects on new vehicles are not known.
Resources
EIA Annual Energy Outlook 2008 (Early Release)
February 27, 2008 in Cellulosic ethanol, Ethanol | Permalink | Comments (24) | TrackBack (0)
Comments
Posted by: sjc | February 27, 2008 at 07:56 PM
Bio-fuels will have to stop, when even the middle class won't be able to afford food. Its tragic the poor can't get by NOW. But hungry middle class people will force the gov't to see the errors of their ways. The UK & France are already examining their bio-fuel policies.
A new U.S. administration is needed. Too long has President Bush been in lockstep with his own shadow & not paying attention to his policies' effects on people.
Posted by: litesong | February 27, 2008 at 09:21 PM
This policy seems profoundly idiotic. You suppose politics had anything to do with it?
Posted by: George | February 27, 2008 at 10:00 PM
Don't pin everything on Bush. There's a lot of farm state Democrats (including Obama) who loved this mandate, too.
It's going to take wheat shortages and $10 loaves of bread to whap them upside the head to get them to realize that corn ethanol is very much the wrong way to go.
Posted by: Cervus | February 28, 2008 at 12:35 AM
15 billion gallons of corn taken off the dinner table??? What is more important, people or the internal combustion engine? Ethanol, ethanol, ethanol, mostly taken from food products. Wheat just doubled in price, overnight. The price of corn, Mexico's biggest food staple, already has a strangle hold on the people. This is NOW, what about 15 years from NOW??? The goal should be to put all of the food back on the table, and ditch ethanol altogether. What planet are these guys living on? Certainly not this one. Their plans cannot, and will not be achieved. Believe, me the oil companies are betting on it!
Not mentioned are biofuels made from non food resources like, biodiesel algae, 33,000, carbon free, gallons to an acre. Not mentioned biofuels that don't affect agricultural land, and further clean up our planet, such as, agriculture, forest and plastic and human waste. Not mentioned is that corn only produces 18 gallons of ethanol per acre, and what each of those 18 gallons cost to produce and get to market. Think about it! 18 gallons of food ethanol vs. 33,000 gallons of non food, sustainable biofuel that loves to eat carbon for a living.
If your having trouble getting the picture, I recommend the following:
First Step: Take all of the paper that was produced in this idiotic plan and turn it in to biofuel.
Second Step: Replace yourselves with young educated people who would never, not for one instant, think of taking food off the table,of any kind, to produce even a cup of biofuel. And, or, take money from special interest groups and cow tow to polititions.
Third Step: Take some of that money that the oil lobbies have lined your pockets with and, go out and buy yourself an electric car.
You see, the future is an all electric everything. Biofuels produced from non food resources, will be used to generate electricity, and re-sequester carbon emissions back into producing more biofuel, to put power back into our electric grid, to power the nation along with our, wind, solar, geothermal, waves, and other great non polluting renewable technologies. Simple! What are you waiting for??? You are free to GO to Step One!
Posted by: solarnano | February 28, 2008 at 02:56 AM
re Ford's numbers: 74 gallons of E85 is only 11.1 gallons of gas. But 62.9 gallons of ethanol!
Posted by: JN2 | February 28, 2008 at 03:00 AM
There is no reason to assume that ethanol will still be the primary biofuel in the US 15 years from now. By then, biobutanol, biodiesel, BTL and biomethane could all win significant market share - as long as the market isn't explicitly rigged in favor of ethanol.
As Germany is discovering, increasing the biofuel fraction of E91 and E95 from E5 to E10 would force millions of legacy vehicle owners to switch to the more expensive E98 grade. Ergo, there is merit in defining high blend biofuel standards and forcing car manufacturers to certify that as of e.g. 2015, *none* of their models contain non-consumable components (seals, hoses, pumps etc.) that are incompatible with those standards. True FFV capability would not be strictly required, but government-mandated changes in fuel composition should require no more than reprogramming the ECU, draining the fuel system, replacing the fuel filter and an oil change.
On a side note: in terms of a holistic energy policy, it actually makes little sense to insist that all 36 billion gallons (equivalent) be used exclusively as on-road fuel. Any application that verifiably replaces crude oil with a sustainable biogenic feedstock should be eligible. Examples include non-road vehicles, electricity generation, space heating, bulk chemicals and specialty chemicals.
Posted by: Rafael Seidl | February 28, 2008 at 04:19 AM
Here is a plan for how to achieve energy independence and save money as well in the long-term. First a little background.
In Brazil ethanol has been historically cheaper than gasoline but gasoline was still the only fuel that you could get everywhere. For that reason most people in Brazil were still buying gasoline-only-cars some years ago. When the first flex fuel cars entered the Brazilian auto market I believe about in year 2000 that changed consumer behavior overnight. Suddenly you could gain the double benefit of being able to fuel everywhere and being able to buy cheaper E85 or other ethanol blended gas where that were available. It only took about three to four years from the first introduction of flex fuel capable gasoline vehicles to obtain almost 100% market penetration for all new gasoline vehicles sold. The rest of the world could watch and learn from the Brazilian experience.
What we need to do go to get nearly 100% flex fuel in 3 to 5 years on all new cars sold in the US is to make bio ethanol importantly cheaper than fossil gasoline. The US can do that by increasing the current subsidy of only $0.5 per gallon of ethanol to $2 per gallon. Why $2 a gallon? Because US taxpayers indirectly are subsidizing fossil gasoline with $2 per gallon. Of those 144 billion gallons a year currently consumed in the US the 100 billion is made from imported crude oil and currently the US Army spends about $200 billion a year to protect that import through its war efforts in the Middle East. This is exactly $2 per gallon of imported gasoline.
The point is that with a $2 direct subsidy on ethanol the E85 will be about $1.5 at the pump compared to $3 for pure gasoline. This is a very good reason for buying a flex fuel next time or alternatively pay at most $1000 to convert your existing non-flex fuel car into a flex fuel capable car. Furthermore, this subsidy would ensure that there would be good economic reasons to rapidly expand the current ethanol production. There is enough cellulosic biomass in the US right now to produce about 50 billion gallons of ethanol per year. The only thing that prevents the industry from doing it is that the capital cost with the current cellulosic ethanol processes is still too high to make it profitable when the subsidy is only $0.5. That will change overnight with $2 per gallon. Furthermore, the process technology for cellulosic ethanol is right now very immature and can in a decade or two be improved >a lot<. The capital cost could be reduced to a fraction of the current cost but it will take time (an 80% improvement is highly likely). The point is that the subsidy can be reduced as the ethanol industry succeeds in producing cellulosic ethanol at lower costs. By 2028 you can probable get completely rid of the subsidy and you could do all 100 billion gallon of otherwise imported fossil gasoline this way (100 billion gallons will require that a large part of US agriculture is doing cellulosic biomass production as well. However, the emergence of EVs and PHEVs will not make it necessary to produce all 100 billions to get rid of imported crude oil).
The benefit of this is that we could save money in the long run. Also there would be no more reasons to trade the lives of US soldiers for energy security and there would be no foreign countries that could blackmail the US on its stance on democratic rights such as free speech. The same thing applies for many other democratic countries. However, the US has an advantage in having so much land available for biomass production. Canada could also become a major exporter of cellulosic ethanol because they also have more than enough land available to supply their own biofuel.
*******
PS. Regarding the economics of biomass to liquids. One ton of biomass can be made for $50 delivered and can be converted to about 100 gallons of liquid fuel such as ethanol. The expensive step is capital cost. Alternatively, one ton of crude oil costs 100*6.25 = $625 (using $100 per barrel)! One ton of crude oil can be converted to about 250 gallons of liquid fuels such as gasoline. What makes gasoline expensive is the cost of crude oil not the cost of capital. Time is improving the business case for biomass to liquid fuel because the capital cost of BTL is dropping. The opposite is the case for crude oil to liquid fuels were the price of crude oil increases and so does refinery cost because the quality of crude oil is dropping as only the old oil fields are left (the average global crude oil is getting heavier).
****
@ litesong
For $55 USD you can get about 10 bushels which is more food than you can possible eat for a hole year. Millions are dying every month globally from overweight and obese only a few thousands die of hunger and it is not because they cannot afford the food it is because they cannot get the food because of some war going on where they live. Saying that the average American will starve to death because corn goes from $22 for a whole year’s consumption of corn to $55 is utterly ignorant.
Posted by: Henrik | February 28, 2008 at 04:39 AM
how about we skip the whole FFV and ethanol distribution problem and just make biobutanol instead?
it mixes with petrol, acts like petrol, and can be used in all cars as a direct replacement for petrol. most people wouldn't even notice that anything had changed.
of course, this does nothing to address to food crop competition issues if we just start making biobutanol out of corn instead of ethanol.
Posted by: vboring | February 28, 2008 at 07:54 AM
RUN YOUR CAR ON WATER
HYDROGEN FUEL WILL RUN BOTH GASOLINE AND DEISEL ENGINES. WATER DECOMPRESSES INTO HYDROGEN AND OXYGEN.
PUT A CONTAINER OF WATER UNDER THE HOOD, STICK ELECTRODES INTO THE WATER FOR ELECTROLISIS, RUN ONE LEAD TO THR IGNITION THE OTHER TO A GROUND. THAT WILL PRODUCE HYDROGEN. RUN THE HYDROGEN THRU A TUBE TO THE MOTOR. IT'S THAT SIMPLE TO RUN A CAR ON WATER
LEO WELLS
Posted by: Leo Wells | February 28, 2008 at 07:59 AM
Leo: I assume you have heard of this but do not operate your vehicle with water. If you have a car that will operate as you say,operating on water only. I can guarantee you a several million dollar profit from the sale of your invention. I'm afraid you have been dupped.
Posted by: JIMR | February 28, 2008 at 08:21 AM
Henrik:
Massive corn based ethanol production will (and is already) putting pressure on many more produces than corn. Wheat at about $12 a bushel will have major repercussions on world food price and availability. All meat products will double in price quickly enough. Milk + chesse price will follow etc.
As farmers switch from fruit + vegetable production to ethanol feedstocks, the effect will be on most edible food.
It is a simple question of supply & demand. One of the few countries that can afford to mass produce ethanol is Brazil with its huge sugar cane and vast good production land surpluses. Secondly, sugar cane is a much better feedstock than corn.
Cellulosic ethanol or butanol may be a more sustainable approach but it would be more appropriate to switch to non-liquid fuel cars and trucks. PHEVs and BEVs may make the difference.
Posted by: Harvey D | February 28, 2008 at 10:36 AM
Harvey D:
What makes you think Brazil has "vast good production land surpluses"? Or do you not care about how much rain forest they need to cut down to make this happen?
[q->t to email]
Posted by: Adam | February 28, 2008 at 12:27 PM
Henrik's absolute blindness to the starved of the world does not surprise me. So many with full bellies have their eyes completely closed to the wasted bodies of the world. That my name is attached to his blind words saying the starved of the world exist in small numbers appalls me.
His contention that children & people starve only because there is war in their vicinity shows his three dimensional blindness. Many are the reasons for starvation.
Putting words in my mouth that I did not say, will NOT decrease the wasted starving around the world.
Strong bio-fuel policies that will feed hungry engines in direct opposition to hungry people ARE devastating the poor. Such policies are so inclusive, the middle class is NOT to be thought immune!
It is stated by many relief agencies that small U.S. policy changes whiplash the poor around the world. U.S. bio-fuel policies whiplash the poor...to death.
Posted by: litesong | February 28, 2008 at 02:36 PM
litesong:
Henrik is right though. Look up any authoritative source on famines, and you'll see they're either caused by politics or by an economic spiral of hoarding and price increases. When transportation is available, the famine goes away. There is plenty of food to go around. The Malthusian hypothesis has been thoroughly discredited, and redirecting as much as 40% of the US corn crop to ethanol (for 15B gallons/year) won't change that.
China's new appetite for meat is driving up prices much more than ethanol, and you can see that in the price increases which came years before US ethanol policy shifts.
[q->t to email]
Posted by: Adam | February 28, 2008 at 03:38 PM
Now we have 2 blind guides.
Sure it is politics & economics that starve people & keep food from circulating to the needful. Sure it is poverty, not lack of food, that causes starving. Pointing out the obvious doesn't give you the high ground to support political economic bio-fuel policies that further raise food prices.
The obvious error you set forth can be seen in people, not starving, but chronically underfed which don't stir world concern. The chronically underfed are that way because of high food prices, in short, poverty. When the drought strikes people begin to starve.
Whether the world responds to 'transport' food to 'stop' famines isn't the question here. The question is will the same political-economic conditions that set up famines by chronically underfeeding the poor be allowed to continue. In most cases those P-E conditions do continue to exist. Political support of bio-fuel policies, not only continue the roots of starvation themes, but immensely add leverage to starvation politics.
Posted by: litesong | February 28, 2008 at 09:02 PM
The bottom line is: There is absolutely no reason to make any kind of biofuel from food products and, no reason to use agricultural land for the same, period!!! Quit trying to justify! There is absolutely no justification, period!!!
There are a myriad of better alternatives, that will supply the worlds energy need, bring prosperity to all, end the wars and, clean up the air.
Produce all the worlds energy from non food source biofuels, algae, waste from agriculture, forests, animals and humans. Add to that, wind, solar, geothermal and new technologies. All converted directly to electricity directed into the grid, directed to all electric transportation, homes and industry. No fossil fuels, coal and nuclear plants and, NO BIOFUEL FROM FOOD PRODUCTS! A clean prosperous future for everyone with technology that is here today and, will improve tomorrow. Easy! Simple!! Let's do it!!!
Posted by: solarnano | February 29, 2008 at 03:16 AM
It is noble to have the food/fuel debate in favor of food. However, modern society needs to find its way and this is not done over night with good intentions alone.
We will get to a fair and just system of providing energy and food. No one wants to harm anyone, it is just a tough problem that needs to be worked through over time.
Posted by: sjc | February 29, 2008 at 05:17 AM
Change doesn't happen overnight??? "No one wants to harm anyone?" Biofuel entered, some of our vocabularies, practically yesterday. Today, wheat just doubled its price. Because a huge amount of corn is taken off the table has caused corn prices to go through the roof. Maybe you can pay the price, but there are many more than you that cannot. This is right now. "No harm to anyone?" In fifteen years, what?
Take a look at this article, from Europe, that keeps all of the fuel on the table:
http://biopact.com/2008/02/surging-interest-fischer-tropsch-fuels.html
Posted by: solarnano | February 29, 2008 at 05:43 AM
Its great to see more people aggreeing with me that gowing food for our fuel tanks, instead of our bellies, is wrong.
Also a couple of Henrik's assessments are wrong. He states "The rest of the world could watch and learn from the Brazilian experience" is almost funny, if it wasnt so serious. Previously someone mentioned the demise of Brazilian rain forests, creating temporary sugar cane fields. But Henrik does not expound on what happens to these sugar cane fields at harvest. THEY ARE BURNED to clear off the leaves, and drive the rodents and snakes out. What are the rest of the world learning when they watch this??? We here in Texas are occasionlly affected by haze and generally bad air conditions created by Mexican agriclutural practices where farmers there burn their fields.
Another of Henriks assessments is wrong. He is advocating increasing government subsidies on ethanol. Bad idea! His argument is that the government is subsidizing fossil gasoline. Well two wrongs do not make a right. Dont expect a subsidy just because the other side is getting one. Stand on your own feet. We should have been doing that a long time ago. Let the market forces work, how painful they are.
But he is right in saying that celluslosic ethanol is "immature". Ethanol is a short term solution, and should be funded accordingly. BEV and FCEV are our future. Ethanol is just a bandaid until that cure has developed.
Again fuel for food is a bad idea any way you look at it.
Posted by: Mark A | February 29, 2008 at 07:23 AM
@ Mark and Solarnano,
as SJC has eruditely observed, we have a fleet of 140 million vehicles (with an average age of ~7 years) that need to run on something for another 5-15 years. If we replaced 8% of our petrol use, by widely distributing E10, that might just offset the growth in the number of drivers over the same time period.
Corn will not be the ultimate fuel input for the simple reason that something else will be much more profitable.
Posted by: Healthy Breaze | February 29, 2008 at 06:14 PM
Thank you, I like the word erudite...
I think we will find away through the maze of options. It will take time, but people just like their cars too much to give them up all together. This is a powerful motivator to find a good way to have cars and a clean sustainable world as well.
Posted by: sjc | February 29, 2008 at 08:23 PM
# solarnano,
I notice that you do not include any non-polluting renewables like hydro in your discussion of what we should do. Why is that?
I forgot Hydro damns up rivers and prevent certain migratory fish species from spawning in significant numbers. But the solution is ignored, like fish ladders.
But there are not many rivers yet undamnned.
I do note that "waste from agriculture" will no longer be available to replenish the soil. Why are you denying the worms and soil bacteria the right to eat?
Never thought of that did you?
Or that "algae" need food to live on, and you are diverting someone or somethings food supply, for your own selfish fuels sources, by feeding your fuel algae.
Never thought of that did you?
You do manage to include a rather uncommon source wind, but the warts on that are only now beginning to appear. It kills birds, and is "unsightly" to phony greens when visible from their mansions. The cost of maintenance is prohibitive when your power plant sits on a pole 20 stories in the air, too. So the wind farms are littered with dead wind-turbines; too costly to bother to fix. And its intermittent, too.
Solar really hasn't been tried to date, on a large scale, so you don't seem to even know that it is very inefficient (or it would be in use by now). Its impact on the environment is at least two orders of magnitude worse than adding marginal amounts of a minor trace gas to the atmosphere for a few more decades.
Solar's possibilities for anthropomorphic global warming are simply astounding. Or hasn't anybody actually bothered to tell you what happens when you alter the Albedo substantially, on a large scale? Solar's inefficiency requires enormous quantities of acreage to produce not very much power.
It may be renewable, but if you believe we can't bear the warming of a hundred years from trace CO2, than certainly, we can't bear ten years of fossil replacement with large scale "solar". Even then, that would be, in a mere decade, considerably worse. Hardly enough time to even get really started. Fortunately or unfortunately, depending on your point of view. And its intermittent, too.
Modern technological civilization depends of Energy. Without it, we can only regress to a lower technological level and all that entails.
The only sources that do not have dramatic wide spread effects are thermonuclear, nuclear, tidal, hydro, or geothermal in origin. And you didn't select any of them, except to eliminate some.
Of course we can do without, but I suggest you hold a lottery to determine which one out of every hundred humans, gets to avoid participating in the "Great Die Off".
Otherwise the Four Horsemen of the Apocalypse will do it in a very messy way. The Socialist "nomenklatura" have already selected, and it doe s NOT include them. They excel in equally sharing the misery for others, though.
Posted by: Stan Peterson | March 01, 2008 at 11:38 AM
HOW MANY COMBUSTION MOTORS ARE IN THE U.S.A.
THANKS FOR YOUR HELP.
Posted by: Francisco Ponce | March 14, 2008 at 03:40 PM
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They seem to be saying that by 2022 (14 years from now) there will be LOTS more FFVs and lots more E85 pumps across the U.S. If there are 140 million cars now and 5 million of them are FFVs and the rest can only use E10, then I do not think that the numbers add up.
You might need as many as 30 million or more FFVs on the road by 2022 all using E85 all the time to come close to using 36 billion gallons of ethanol per year. That would mean that more than 1 in 10 vehicles sold between now and 2022 is an FFV....they better start now if they hope to get that many on the road by then.