And high power or GHz+ transmitters and microwave ovens still use tubes.
There will always be conventional power trains, too, in trucks and
motorcycles. But just as most electronics applications today are solid state
it is a safe bet that passenger cars will be almost entirely hybridized (or
whatever comes next) in a handful of decades.
Change is something we either accept or not, but it occurs anyway because of
market forces or government fiat. I would not have predicted the complete
takeover of EFI in the US, but the requirements of emission control
outweighed the high cost and modest benefit. If CAFE comes back with a
vengeance the changeover to hybridization may be quicker than I expect. In
the end, the performance will be what the public will demand even if the
"... 'cause it's understood I got a fuel injected engine under my hood!
What, all of you too?" Apologies to the Beach Boys.
"modest benefit"??? gotta tell you dude, my injected civics are /way/
more reliable than any carburetted car i ever owned. that's no "modest
benefit". much easier to fix too. different, but definitely easier.
On 21 Mar 2007 15:16:32 -0700, firstname.lastname@example.org wrote:
This site is pretty silly, claiming that a Prius is more harmful to
the environment than a Hummer. There argument sums up to:
Zinc for the battery is mined and this one zinc mine was an
environmental disaster dating back more than 50 years. Response:
Environmental standards have improved a lot in the last 50 years. The
fact that the mine is in Canada assures me that it is no running in an
environmentally sound manner.
The battery has a limited life and must be disposed of. Response:
systems are well in place to recycle the materials which will reduce
the need to mine new ore.
The materials for the battery are moved around the world during
manufacturing. That wastes energy. Response: Silliest argument of
all. This is true of any vehicle and most any large or complex
manufactured item. How does the cost of moving those batteries
compare with the cost of moving the steel for the Hummer from Korea or
Japan or China to the US? How far did the coke and iron have to
travel to the steel mill?
The Hummer will last 300,000 miles and the Prius will only last
100,000. Response: Pure speculation. If gas goes to $5, I could see
the Hummer getting taken out of service immediately. Even at $3,
putting $2K into a 100,000 mile, 45 mpg Prius makes good economic
sense if you think it will go at least another 50,000. Most long-term
Toyota (and Honda) owners will think that is a pretty good bet.
Some conventional subcompacts can get almost 45 mpg. Response: Prius
isn't a subcompact and Hummers get about 12.
It's true that the realistic mpg of Prius is about 45 mpg, which is
only about 30% better than the 35 mpg I get from my gasoline Civic.
But I think most people neglect the emissions benefit of hybrids:
typically 90% less than gasoline cars. And probably way more than that
compared to a Hummer.
The one I was next to the other day in a parking lot DID have
the gasoline engine idling so I don't see where you pulled the
90% number out of. From the tesla marketing materials?
That one surely does not run the motor at idle.
On Mar 22, 8:43 am, email@example.com wrote:
man, you are skeptical. Tesla? that's an all-electric. which probably
produces more emissions than a hybrid because the electricity is
generated by burning coal, natural gas, and oil.
"Emissions - 89 percent fewer smog-forming emissions than the average
new car, exceeding the standards for a Super Ultra Low Emission
The reason why hybrids can have near zero emissions is because they
keep the engine running at peak efficiency as much as possible.
You are saying that the power plant that for example burns
diesel does so with more emissions than a diesel car does?
Nuclear plants produce relatively clean electricity
unless they blow up or the by products are disposed of improperly.
It's definitely easier to control the waste from immovable
plant than from hundreds of millions of cars (some of which
are even exempt from emissions testing in the US, and out
of USA I bet some countries don't even have a requirement to
test the cars as a part of an annual check).
On Mar 23, 5:27 pm, firstname.lastname@example.org wrote:
it's quite possible that the amount of emissions produced by the power
plant to produce the electricity to charge a Telsa car could be more
than the emissions than a gasoline car.
ok, but you cannot choose your power source when you use electricity.
The power sources all mixed in the electrical grid. And about 80% of
U.S. power comes from coal, oil, and natural gas.
car emissions consist of hydrocarbons, nox, carbon monoxide, and
carbon dioxide. A lot of the emissions occur when the engine is in a
transitional state or not running at optimal efficiency. With a
parallel battery power, hybrids can keep engines running at optimal
efficiency (or off). Hybrids produce less emissions than simply the
difference in mpg.
Its a similar situation with computer chips and solar cells
considering the nasty chemicals that go into manufacturing them.
There several toxic waste sites around Silicon Valley from
chemical leaks in older days when they were less careful.
Its improved now, or been offshored.
Or that Google is one of the largest consumers of electric
power in theworld because it has the worlds largest computer
system- 2 million CPUS spread over 60 data sites.
But to be fair, Google is also the most efficient computer
operator in the world per terabyte of storage because they
have paid both economic and ecological attention to
Being green isnt easy.
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