On Mon, 19 Oct 2009 08:21:04 -0700 (PDT), Bret Cahill
Imagine the added distraction of drivers worrying about that, too.
Imagine the electrical efficiency while you're at it.
The gasoline-powered IC engine is a technological wonder. It starts
instantly, has lots of power, is reliable, and can go most anywhere,
300 miles at at time between 5-minute refuels.
Smart steering and braking would make driving much safer and easier w/
or w/o without electrification.
The only hope is to go to higher and higher technology.
That's the argument for trolley rail or wire.
Maybe the Japanese have less potholes as well as less petroleum than
the US which may be why they are considering it first.
Best of all ICE only costs 2 cents/watt -- the cheapest prime mover
If they can get rid of the rare earth metals in performance electric
motors and if the price of copper doesn't soar too much then EV and
hybrid drive trains might eventually be only a few cents/watt too.
Renewables like food aren't included, or they are only included as far
as the energy required to grow and transport the food.
Some algae can grow in petroleum. If that were used as food then
(356 days/year)(8,000 BTU/day)/(16,000 BTU/lb) = 178 lbs carbon/year
= 650 lbs CO2/year.
On Tue, 20 Oct 2009 09:23:56 -0700 (PDT), Bret Cahill
There was an ecoloonie on NPR the other day, analysing the carbon
footprint of browsing the Internet. He's concerned that clicking on a
site may move disk heads somewhere halfway around the world and cause
some power station to make more CO2. He figured that intensive web
browsing generates about 1.5x the CO2 of the person sitting there
clicking his mouse and breathing.
Think of how much more CO2 that person would generate if they got up
and walked around or (gasp) ran or (even worse) cooked dinner.
They tout all these low power consumption circuits, sleep mode etc.,
as though that's a drop in the bucket.
Maybe high efficiency is good for battery powered devices but if they
think that'll save our fannies from peak oil they are bat crap crazy.
On Tue, 20 Oct 2009 19:56:25 -0700 (PDT), Bret Cahill
Peak oil seems to always be off in the future. Recent discoveries in
recovering oil and gas from shale have hugely multiplied likely
reserves. And new drilling keeps finding more oil.
Good; I just bought a 3.3 liter V6.
Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here.
All logos and trade names are the property of their respective owners.