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Eco-Celeb: Daryl Hannah

by TreeHugger on 03.21.05
Culture & Celebrity

daryl_hannah_teepee.JPGIn an interview with Off-Grid, Daryl Hannh takes us inside her home, a former stagecoach stop in the Rockies that she’s converted to solar power. Backup power generation is handled by biodiesel, which she’s currently promoting. A large, mossy stone from the property has become her sofa (which needs to be watered to keep the moss alive). We can’t vouch for how comfy that’d be, but it must look great. Read more about her holistic approach to environmental activism at ::Off-Grid [by KK]

Comments (2)

This is what he should be building right now. In my opinion Ford and GM will go bankrupt before they even begin to catch on.

For about the past year I have offered anyone who would listen the following info: None of the American automobile companies have even responded. I have had some positive response from several educational institutions but - as far as I know - none have done any experimental work to verify my claims.

Here is what I have been proposing:

Fuel cells or Hydrogen will never become a significant power source for automotive power. Anyone who has taken a careful look at it knows this.

If we could find someone in our auto industry with just a tiny bit of imagination, who knows what we could do? In one scale or another everyone of these systems have been proven.

Like to produce a vehicle that can burn rubber on takeoff on all four wheels and get 90+ mpg?

What I would like to see the automakers working on would have:

A turbocharged, two cylinder opposed, 2-cycle, air-cooled diesel directly
driving a generator. (It would not be running most of the time.) A 111 volt Lithium-Ion Polymer battery pack. Nothing but wires going from the
controller to every wheel, except for the necessary additional friction
brakes (of course). An added advantage of this would be the ability to recharge from the electrical grid while at home, saving even more on fuel.

Each wheel, depending on the feedback to the controller from wheel speed sensors would drive with just the right power depending on the accelerator position. You would get recharging from deceleration just as you do in today's hybrids. You would also use this feedback to stop the wheel from skidding.

Each wheel would have a stationary stator and a series of fixed magnets
closely adjacent all around the inside of the wheel. In a sense it would
operate each wheel in a very similar fashion that the mag-lev trains use,
except the motion would be circular, of course. Something very different
about this type of motor is that the stators are fixed to the axles and the
magnets are driven around them. This gives a significant increase in
mechanical advantage. That's like turning an ordinary electric motor inside out.

There would be no need for ordinary electric motor brushes. In fact, many electric motors operating today are brushless.

Such motors already exist in the model airplane field and their efficiently
is amazing - approaching 90%. I've got a couple and doubt that I would ever buy any other type.

It's possible to hang the model on the prop right out in front of you and
accelerate straight up, like a rocket, with this type motor

In the vehicle the motor/generator would not turn on to recharge the
batteries until they needed it. There are already experimental Lithium-Ion
driven cars that can get in excess of 200 miles before they have to be
recharged by plugging them in. You would top off you batteries overnight by plugging them in. Some cutting edge research by Toshiba - employing nano-technology - indicates that recharging can be done so fast that you could top off while eating lunch.

Lithium -Ion battery technology is so new that I doubt that very many
automotive engineers have even heard of them, much less thought to use them in this manner. Their energy density exceeds that of any other form of rechargeable energy storage.

The Lithium Ion battery is the most efficient battery available right now. So is the outer rotor electric motor the most efficient motor.

Build an Automobile right and it will weight less and have simpler, easier to repair/replace modules.

Lets see what we can eliminate while improving performance and efficiency.

Transmission - None

Ignition system - None

Liquid cooling - None

Valves and valve train - None

Use bio-oil/fuels for both fuel and lubrication.

Feel free to pass this along to anyone you know in the Transportation business. I suffer from no delusion that any of them have the imagination to be able to see how something like this could jump them ahead of the competition.

I bought a Honda Civic Hybrid last summer. I enjoy it more than any vehicle I've ever owned. I will Never buy another vehicle that isn't a Hybrid and doesn't get at least 50 mpg.

As far as I can tell, Detroit isn't even thinking the same way I and the vast majority of it's potential customers are.

William Lucas Jones
490 Mauldin Rd.
Sautee, GA 30571-3159

(706) 219-3333

jump to top Lucas says:

You idea for a full diesel electric drive for a passenger car is a good one. Diesel electric drives have reliablilty and efficiency advantages proven by decades of use on trains. The all air-cooled system with wheelmotors is less practical though. Liquid cooling systems for the diesel and electric motors enable much higher power densities which means the same power can be achieved in a lighter and more efficient package. Also putting the motors in the wheels adds a lot of unsprung weight that is very detrimental to handling. Even trains now use fully suspended traction motors with driveshafts to the wheels. This way the unsprung weight is only 1/2 the weight of the driveshaft.
Having a reduction gear between the wheel and moter also offers a lighter and more efficent total package.
The current challenge going forward is engineering automotive systems cheap and reliable enough for the mass market and we are almost there. The US military is commited to switching to full diesel electric drives for land vehicles and the Oshkosh truck corporation has developed a diesel electric drivetrain for their military trucks.

jump to top Leonard Joosten says:
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