Comments on: Which road leads to energy independence?
Alternative fuels advocate Will Coleman says options are not pipedreams. But hard decisions must be made.
Alternative fuels advocate Will Coleman says options are not pipedreams. But hard decisions must be made.
December 7, 2009 5:40 PM PST
December 7, 2009 5:36 PM PST
December 7, 2009 5:00 PM PST
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your experiences:
http://autos.yahoo.com/newcars/
toyota_highlanderhybrid_2006/4356/model_user_reviews.html
Hybrids do, as a class, generally achieve higher EPA ratings than
their conventional counterparts, but this is in part do to the
outdated way that the EPA measures fuel economy with tail-pipe
emission analysis rather than genuine road tests.
Modern diesels and gasoline powered vehicles can meet and
sometimes exceed the efficiency of hybrids when given the full
treatment of computer controls and other technology which are
so lovingly bestowed upon hybrids. What they can not do is
score points with the greenies in Washington.
Environmentally friendly, hybrids are, when new, but the jury is
still out on long term reliability. My experience as an automobile
mechanic tells me that hybrids will be the first widely sold class
of truly disposable cars. Repair and replacement costs of many
of the high tech components of hybrids will make it cost
prohibitive to even consider them in the used car market (yes,
there are those of us who drive the cars which you discard after
a few short years of service). When you pay $3500 for a car, you
don't want to have to pay another $3500 for an axle/brake/
regenerator/sensor cluster the first time you hit a nasty pothole.
your experiences:
http://autos.yahoo.com/newcars/
toyota_highlanderhybrid_2006/4356/model_user_reviews.html
Hybrids do, as a class, generally achieve higher EPA ratings than
their conventional counterparts, but this is in part do to the
outdated way that the EPA measures fuel economy with tail-pipe
emission analysis rather than genuine road tests.
Modern diesel powered vehicles (eg: VW TDI) can meet and
sometimes exceed the efficiency of hybrids when given the full
treatment of computer controls and other technology which are
so lovingly bestowed upon hybrids. What they can not do is
score points with the greenies in Washington and local air nazis.
Environmentally friendly, hybrids are, when new, but the jury is
still out on long term reliability. My experience as an automobile
mechanic tells me that hybrids will be the first widely sold class
of truly disposable cars. Repair and replacement costs of many
of the high tech components of hybrids will make it cost
prohibitive to even consider them in the used car market (yes,
there are those of us who drive the cars which you discard after
a few short years of service). When you pay $3500 for a car, you
don't want to have to pay another $3500 for an axle/brake/
regenerator/sensor cluster the first time you hit a nasty pothole.
2. Ethanol is a terrible fuel. It gets terrible mileage. To be competitive, Ethanol needs to be priced at about two-thirds the cost of gasoline.
3. Biodiesel, on the other hand, is by nearly any measure superior to conventional diesel. The problem with biodiesel is that we just can't grow enough vegetable oil to produce enough of it. The gene splicers need to get into action and invent a really good fuel crop. The oil yield on soybeans is terrible. We use soybeans for oil becaues they're easy to grow and we don't know what else to do with them.
4. Hybrids are overrated. The mileage is good, but they have their own issues. As a consumer, my confidance in them is not that high. A diesel can get comparable mileage and diesels are known for their durability.
5. Flex fuel vehicles: see ethanol.
6. Plug in hybrids. These also have their issues. High quality batteries that can be recharged thousands of times aren't cheap. And don't forget the cost of generating electricity when computing that mileage.
Finally, don't over estimate the governments ability to bring about change. People drive the cars they do and use the fuels they do for their own reasons. About the only need for government intervention might be to provide funding for the development of fuel crops. And even that's debatable.
You are breaking down and damning each of today's emerging techs as if they were mature industries, which they clearly are not. I'd prefer to think of our path to a greener future as a series of baby steps that lead to adult strides. We need to take these first tentative steps before we can run.
Don H.
Fuel type BTU/US gal Octane(RON) % to Gasol.
Diesel 147,000 25(*) +17.6
Gasoline 125,000 91?98 0.0
Gasohol (E10) 120,900 93/94 -3.3
(E85) 90,400 -28.0
LPG 95,475 115 -23.6
Ethanol (E100) 84,400 129 -32.5
Methanol(M100) 62,800 123 -49.8
Methanol (M85) 72,130 -48.0
Two. Only Power from Solar, Wind, Water & Nuclear will outlast fossil fuels and none of them can be easily used in an automobile. Much of the world's attention has been directed toward hydrogen because it can be made from water and can be stored and shipped. However, both of these are very difficult. In a vehicle it can be directly converted to electricity using fuel cells.
Three. (Reference the recent book of Dr. Prof. Olah, et al at UCLA) But hydrogen can be combined with carbon monoxide to get CH3OH, methanol, which is easy to store and to burn. (It's good enough for the Indy race cars.) It can also be used in it's own fuel cell. It is currently the cheapest to make (from natural gas) but also can be sythesized from hydrogen and CO2.
?Limits to growth? (http://www.answers.com/the+club+of+rome?gwp=11&ver=2.0.0.453&method=3). If they were right, we would probably barely, even, live today!
Björn Lundahl
Göteborg Sweden
- Cellulosic Ethanol Has No Enemies
- by m_albertson October 19, 2006 7:44 PM PDT
- Well, maybe cellulosic ethanol does have one enemy...the oil industry. However, lately even the oil industry is getting in on the frenzy. Chevron, BP and others have been doing their own cellulosic ethanol research. It reminds me of when National Cash Register (NCR) began to research a new technology called computers. Don't we all wish we would have invested in computer stocks when they first launched? I've been trying to find investment opportunities in the emerging cellulosic ethanol industry. So far, this web site has provided the best info: www.InvestInCellulosicEthanol.com . I was surprised to read that even Alan Greenspan is a supporter/believer in cellulosic ethanol.
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