teacher said:
God, I can't believe I'm going to say this. Is not france 100% nuclear? It can be done safely. That is a thread on it's own. But a dead one from the get go..
Think they're 80% maybe...hell of a lot better off than we are...
teacher said:
Take a box fan, put it on your roof, hooked up to a car altenator that charges a 12 VDC (car battery), hook them up to 12 VDC LED's, wala, never pay for lights again. And that's off the shelf stuff.
said that a few times on this site. No reply. Shows me people would rather fight than find a solution.
No argument here...I think people are looking for a magic energy source that will replace oil.
Nothing will replace oil. I think we are going to have to use a variety of energy sources in the future.
teacher said:
Next step here girl. On your own now. How do we generate the power with out fossil fuels? Think BIG girl. Go.
Well, I already said it. Nuclear plants generate electricity. Of course, the catch-22 is that you need fossil fuels to build nuclear plants...and solar panels...and wind harvesters...which is why I say we need to start now before it is too late.
teacher said:
Decades. But that's not the point.
I have an issue with this claim. There are 1.27 trillion gallons of oil left in the world (according to 2004 estimates which I also have issues with because the group that reports the estimates uses professionals provided by oil companies and OPEC, which needless to say have a lot to gain by exagerating). Should last us roughly 45 more years. Of course, what so many people are ignoring is that it is not a) cost effective, or b) energy effective to drill
all the oil from a well. The exact amount of oil recoverable varies from well to well, but there is no well where 100% extraction is possible. And, as a well dries up, the amount of oil that can be pumped in a day also declines. All this spells big problems, not just at the end of our oil reserves, but decades before it.
teacher said:
Do you understand how nuclear power works? Not picking on you. That's a question to all. It is sweet. Critical mass is a beautiful and safely controllable thing. Why is it our Naval vessels have no problem with this? Inside a sealed tube no less. The questions you need to ask are out there people, you're just not asking, or apparently, thinking of them.
Not really. Too much physics. I was always more interested in chemistry. I've seen the numbers, nuclear power is clean, safe, and available now. That's all I really care about.
teacher said:
Move to the head of the class Kelzie. You're homework. Think I've already explained it on this site but......research Hydrogen gas.
Class dismissed.
Hydrogen fuel is a big fat joke. I'm going to list my problems with hydrogen:
1. Hydrogen is not naturally occurring in nature. It must be manufactured.
2. There are several methods of producing hydrogen. The most popular the electrolysis of water, which is basically running a current through water. The problem is a) that the vast majority of our electricity comes from fossil fuels, and b) this procedure uses just as much energy as it produces.
3. Another method is producing hydrogen from hydrocarbon fuel (such as natural gas or biomass waste), but it produces CO2, and is very costly.
4. Maybe,
maybe, we will find a way to produce hydrogen in a energy-efficient way. It would still be an incredible impractical source of fuel for several reasons.
5. The only way for hydrogen to be practically used to fuel a car is if it is in a liquid state. If it is in a gas state, it would take up a ridiculous amount of volume to make a car go any amount of distance.
7. Even in a liquid state, to get the same amount of energy out of your gas tank, a hydrogen tank would have to be 8 times the size of a normal tank.
8. No big deal right? We can deal with 8 times right? The warmest temp that hydrogen will be in a liquid form is -240 degrees C. No matter what pressure it's at. Of course, if it's not a pressurized tank, it will have to be much colder to keep hydrogen in a liquid form. But we will assume, for a minute, that the tanks are pressurized enough. Negative two hundred and forty degrees CELSIUS!!! We're talking some MAJOR technological break throughs before cars are able to lug around some sort of refridgeration system that can keep the tank that cold.
9. Last problem. Ruptures. I don't care if it's in the tank, in the pipes, whatever. Hydrogen gas is explosive with as little as 5% oxygen. And since it is so much more powerful that gasoline, a ruptured tank would mean a fireball capable of destroying anything within several hundred meters.
Enough homework for you?