by rose-colored-coolaid » Thu Jun 19, 2008 6:36 pm
Two thoughts. First off, thanks redmondjp for joining me on the "real pain" side of the fence. I mean, sure there's such a thing as relative standards for pain. But it's not like I defined pain based on the 1600's when real pain was starving to death or dying of flu at age 18. Shoot, I didn't even define real pain as sitting in a trench in WW I.
What I see, is people being forced to make the "hard" decisions like; should I combine all my shopping trips for the week/month into one trip to save on gas or can my child carpool to a sporting event rather than have me drive them in a SUV with just 2 passengers. That stuff is annoying, but little more.
I'll call it real pain when I see a measurable portion of the population is destitute or when a statistically significant portion of the population finds it difficult to purchase nutritious food.
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About hydrogen cars...there are a huge number of technological and business problems with hydrogen power for now.
1) It can't be transported easily. We use pipes for gasoline, which works great, but hydrogen leaks out and is highly corrosive. It tends to eat through pipes. When it does spring a leak, it's harder to find and fix than leaks in gas lines.
2) Hydrogen is not free to make. You have to free it from something (water would be ideal, but usually it's coal or natural gas as redmondjp's article pointed out). In other words, it doesn't actually free us from fossil fuels, but it does make them far less efficient.
3) It's difficult to store. The press tells you that you burn it, it combines with O, forms water, and drips out of your car (or steam goes into the air). But It takes complex, expensive, and heavy equipment to store a tank of it. They are looking at some other options of molecules which will hold hydrogen with a low energy threshold to release it, or using buckyballs to trap the hydrogen, but those options require energy to free the hydrogen as well as meaning you'll have waste material that needs to be disposed and recycled.
4) It's not that efficient. Eventually we need to free it from something cheap and available, like water, but that's a very lossy exchange (both in terms of energy and raw hydrogen).
5) Filling up is also complex. It's not a liquid, you can't just "top it off". This makes for far more expensive infrastructure.
6) It's truly explosive. Movies exaggerate how shooting a gas tank can make a car explode, but it's not true. Gasoline needs to be mixed to explode in an engine. Hydrogen on the other hand really is explosive. At least this would help Hollywood I guess.
Long story short, hydrogen is an expensive boondoggle, and is unlikely to replace fuel for automobiles (aircraft is another story). Plug-in hybrids are far more likely to succeed, and are a better use of our resources/infrastructure. Most people rarely drive more than 50 miles in a day anyways, so plug-in hybrids with a 30-50 mile range will generally use grid electricity, which is generally more efficient than gasoline or hydrogen power.