Posted: Sat Jun 19, 2004 9:08 pm Post subject: THE Hybrid Transportation Thread (merged)
It looks like Toyota is already planning the next generation of Hybrid that are even more efficient. You plug it in at night and it runs on the battery MOST of the time.
link
It will do a lot of good as the natural gas crisis hits.
What are you talking about? We are not completely dependant upon natural gas for our electric power. A lot of areas of the US don't even use it at all. I think the number is something like 15% to 20% total. As natural gas supplies shrink, wind power can scale up.
Do you recognize the benefits of a PHEV? That has the potential to shift 80% of the energy for daily transportation to the electric grid. If done at night for charging, when the grid is under utilized, it would actually be an even more efficient use of our power plants.
This type of technology has to potential to shift the math away from oil energy significantly. And it is not much of a leap from the current generation of hybrids that are coming out.
Matt's point about natural gas is a good point, North America is in a severe natural gas crisis that is not about to go away. link, has lots of presentations over the years detailing the critical nature of oil and natural gas depletion.
Energy is a complex issue, but understandably given enough time for research. I have noticed that some who profess expertise in one area, can show their ignorance in another area. For instance I have read very good articles describing oil depletion and its seriousness, but in the same breath hydrogen will be offered as the solution to the problem. Joseph Romm's book, The Hype about Hydrogen, shows how the cost of hydrogen is $10-20/gallon. And there are many techical hurdles to overcome. 2 years ago when President Bush mentioned hydrogen in his State of the Union address I was impressed, until I investigated the facts.
Hybrids seem to be a great change, but they will only delay the inevitable of life without oil.
Hybrids seem to be a great change, but they will only delay the inevitable of life without oil.
I think both of you miss the entire point of the PHEV. A hybrid electric vehicle (HEV) is still just a gasoline combustion engine that gets all of its energy from oil. It just uses it more efficiently. It can get maybe 5-10 miles on pure battery.
A plug-in hybrid electric vehicle (PHEV) is the next logical step from and HEV. It has a more powerful battery that can get between 20 to 40 miles on pure battery. It only uses the gasoline/diesel engine when the battery gets too low. It is recharged at night. For most daily commuters, this vehicle would never even use gasoline. It would get its energy primarily from the electric grid (nuclear, coal, wind, hydro, natural gas).
The PHEV changes the math dramatically away from oil and more towards fuels that are more readily available or even renewable in the long run.
The future problems with natural gas are not a barrier to a PHEV. Natural gas is not a dominant source of electric energy for this country. Coal and Nuclear both provide more of our power than natural gas. Wind power generation can replace natural gas over the next 20 years as supplies shrink.
Personally, I am in favor of going full bore into breeder nuclear reactors and wind turbines. The nuclear waste issue is small compared to the wastes from coal. But that is just a personal opinion and it is another debate.
Here's some date on Wind Power, currently wind supplies .3% of the United States electrical needs. No more than 6% by 2020 according to the American Wind Energy Association. Houston Chronicle, Jeff Donn AP, 061904.
Here's some date on Wind Power, currently wind supplies .3% of the United States electrical needs. No more than 6% by 2020 according to the American Wind Energy Association. Houston Chronicle, Jeff Donn AP, 061904.
That is based on current projections. If there was a true need for more power via the electric grid, and that need could not be met from nuclear (political reasons/cost) or coal (environmental/political/cost) or natural gas (supply), then guess what would happen. There would be a mass building of wind power projects to help fill the gap.
Regardless, it is besides the point. Whether wind is 6% or 20% of our power is not an issue related to the benefits of a PHEV. That kind of shift of energy towards the electric grid would represent a significant shift in the math away from oil. That could greatly reduce the negative impact of post peak oil.
The market exists. There are large waiting lists for current generation hybrids. Do you think people would mind plugging in each night also if it meant avoiding $5 per gallon? Instead of filling up on gas every 10 days, you might do it once every 2 months with a PHEV. Or maybe even never fill up on gas if you are a true fanatic, like a lot of people are. Within 3 to 5 years these cars would enter the used car market and trickle down to lower income people.
Posted: Sun Jun 20, 2004 8:01 am Post subject: EVs, PHEVs, Hybrids, and the Future of Driving
EVs, PHEVs, Hybrids, and the Future of Driving
California has abolished its requirement that automakers develop Zero Emission Vehicles, and that could mean the end of the electric car. But not everybody wants to drive a gas-guzzling SUV, as confirmed by the rapidly growing market for hybrids, and people who leased EV-1s from General Motors and Rav-4s from Toyota are up in arms because their non-polluting vehicles are being taken away, scrapped or recycled. Is hydrogen power in your future? What about a plug-in hybrid that gets 67 miles to the gallon and goes to the gas station three or four times a year? Warren Olney speaks with a mechanical engineer about what's next in engine design, and with an angry EV driver, whose car is being taken away. link
How would this technology, or similar methods, address industrial and military applications?
It's one thing to move an econobox 67 miles on a gallon of some exotic fuel, and quite another to move tons of goods.
Another point not spoken to is the safety factor. Ever seen one of these hybrids after a serious accident? A large portion of the economy of these vehicles is achieved through reductions in mass & aerodynamics. This mass reduction comes at the cost of overall structural integrity.
I have read that SUV's are the most deadly vehicle, per capita, on the road when involved in an accident... for the other driver. So how would millions of these lighter smaller cars fair, competing for road space with larger commercial vehicles?
What about the massive military use of oil? Are we going to ask our tank commanders to "plug in" their Tank at night to charge the battery? What about shipping? Or aviation? Or trains? Even assuming we can advance a combination of alternative technologies for some of these applications, what's the time table for accomplishing a significant portion of this task?
Timing is everything...
Rate World HC depletion + Rate World Growth - Rate Alternative Deployment = Human Misery Index _________________ "When you understand why you dismiss all the other possible gods, you will understand why I dismiss yours." - Stephen F Roberts.
How would this technology, or similar methods, address industrial and military applications?
That is not really the concern. This is not designed to replace everything or be a silver bullet for all things oil dependant. It is a mathematical fact that this technology could shift a huge amount of our daily commute energy needs away from gasoline/oil into the electric grid.
Aaron wrote:
It's one thing to move an econobox 67 miles on a gallon of some exotic fuel, and quite another to move tons of goods.
It is not an exotic fuel. It is the same conventional fuel used today. Or whatever conventional fuel is the fuel used in the future. It doesnt matter.
Aaron wrote:
Another point not spoken to is the safety factor. Ever seen one of these hybrids after a serious accident? A large portion of the economy of these vehicles is achieved through reductions in mass & aerodynamics. This mass reduction comes at the cost of overall structural integrity.
SUVs are the vehicle that is going to have to decline. We cannot all have tanks on the highway just for the sole reason that everyone else has one.
Aaron wrote:
What about the massive military use of oil? Are we going to ask our tank commanders to "plug in" their Tank at night to charge the battery? What about shipping? Or aviation? Or trains?
Once again, that is not really the concern. A given solution does not need to be perfect for everyone. I think you are trying to make more of this than it needs. This is a simple formula for car drivers. We drive about 20 to 40 miles per day. If we can get most of those miles from the electric grid each day and fewer from gasoline, that shifts a lot of our daily commute from declining oil to sources like nuclear, coal, hydro which are not as threatened. I really hope Wind becomes the next major source of electricity to add to the mix.
Aaron wrote:
Even assuming we can advance a combination of alternative technologies for some of these applications, what's the time table for accomplishing a significant portion of this task?
Timing is everything... Rate World HC depletion + Rate World Growth - Rate Alternative Deployment = Human Misery Inde
You can see the demand lines for hybrids already. They are all purchased for 1 year in advance with waiting lines. If gasoline goes to $3 per gallon or higher (which it will) that just makes that math for PHEVs and HEVs more powerful. It makes the math against SUVs even more powerful. They will be introduced as fast as car makers can make them.
We buy 17 million cars per year in the US. Add in whatever the rest of the world buys. I am sure the same math of gasoline vs electric works there. A commutes are typically shorter in other countries, so they likely would not even need the battery to go as far as the average American.
Joined: Jun 02, 2004 Posts: 1078 Location: Bristol, UK
Posted: Sun Jun 20, 2004 9:13 am Post subject:
Aaron wrote:
How would this technology, or similar methods, address industrial and military applications?
It's one thing to move an econobox 67 miles on a gallon of some exotic fuel, and quite another to move tons of goods.
Another point not spoken to is the safety factor. Ever seen one of these hybrids after a serious accident? A large portion of the economy of these vehicles is achieved through reductions in mass & aerodynamics. This mass reduction comes at the cost of overall structural integrity. ...
Well, the quick answer to the above is to move less. Don't ship tomatoes 1000 miles from farm to table, don't ship plastic crap from China, don't live 100 miles from work etc. It's clear that a leaner economy will involve less transport - possibly by several orders of magnitude.
As for safety, lighter cars are not necessarily less safe than larger heavier ones. I used to drive a Renault Clio, 980Kg yet it faired better in crash safety tests than many SUVs of twice the mass.
Excellent Points, I suppose the thrust of my post was to question just how "limited" of a solution we are looking at, and more important, how long? I would imagine it would be very difficult to accurately project a time line for replacing some percentage of personal transportation.
What about countries which lack the infrastructure to take advantage of these new solutions? Particularly countries which subsidize their fuel markets internally, like India for example. Do we expect new Chinese drivers to begin purchasing these new vehicles? These batteries are made from some pretty special materials. It's not like I can build one in my garage. Do we understand the material limitations of building MILLIONS of these?
I would also point out that my questions about the possible limits for supplying industrial & military needs are because if we are successful in reducing consumer demand through more efficient cars, won't the price of oil come down? And won't we therefore be making oil even more attractive for use in activities for which alternatives do not exist? Point being the more wee succeed in reducing our dependence on oil, the cheaper oil gets encouraging more use through expansion of activities which still rely on oil.
There is where timing comes in... Can we shift enough to alternatives quickly enough to prevent meltdowns in economies around the world? Switching from oil to alternates will be the first time we have gone from our current energy source, to a more expensive method. Every other switch has historically been because we discovered a cheaper way to do things.
Quote:
"There are over 600 million motor vehicles in the world today. If present trends continue, the number of cars on Earth will double in the next 30 years."
link
If we guess that the US has around 250 million cars today, then it would take 15 years to cycle through them all, at 16 million per year. This assumes of course that we can maintain buying expensive hybrids in those numbers. Remember many of the 16 million new per year are less expensive low-end cars. The majority I would think. _________________ "When you understand why you dismiss all the other possible gods, you will understand why I dismiss yours." - Stephen F Roberts.
Posted: Sun Jun 20, 2004 11:08 am Post subject: Patchwork of solutions
The oil supply won't go to zero even 100 years from now. So I think a patchwork solution where we shift away from oil use piece-by-piece is probably what's going to happen.
Personal cars are a luxury and responsible for 40% of oil use in the US, so they will be the first things to go. If you assume global oil production is shrinking at 3% per year, and you make autos take the entire hit, that's about 6 years to reduce driving distances by 50%, or to increase average mpg from 20 to 40 mpg, or both.
Air travel is also a luxury; it probably can't get more efficient so we'll do less of it. Use of electronic telepresence will rise. Increasingly, long distance travel will be by train.
Home heating in the northeast will have to switch to more use of gas or electric power. Also, people may start to move to warmer climates, accellerating population declines in the northeast.
Long-distance freight will move from trucks to trains (they still use oil, but they're more energy-efficient).
Eventually certain agricultural or industrial uses will begin using biodiesel, or liquid fuels derived from coal.
Electric power generation will drop gas in favor of wind, nuclear, and coal. Increased use of solar in homes for generating electric power (PV) and water heating, as well as improving efficiency of appliances, will start to cut electric demand as the price rises.
And so on and so on. In 50 years, at 3% decline per year, we'll have to run on 20% of today's oil production. What oil is still being produced will be going exclusively to essential needs, including the military.
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