Dunebilly said:karl said:Dunebilly said:d.n.f. said:We had a half day workshop on vehicle extrication for hybrids. As a fire fighter they are a pain in the ass and can be extremely dangerous to emergency personal.
Don't gas tanks in cars explode?
NO! Gasoline tanks don't normally explode. Diesel tanks will explode. To have an explosion you need fuel vapors and oxygen. Fuel vapors alone won't burn or explode. Gasoline has a very low vapor pressure and when you put it in a tank, the fumes that come off of it quicky displace all of the oxygen. This is in a vented tank, which car tanks are vented through the carbon canister. Think of it this way. The gasoline evaporates a little bit and the fumes push all of the oxygen out of the tank, so nothing in there can explode. Diesel on the other hand has a higher vapor pressure and won't do this as readily. I'm guessing a gasoline tank at 40 below or something might explode, just as a diesel tank at 100 plus degrees might not, but you get my point.
The big thing no one has mentioned is the CO2 created to make these biofuels. We can't too much CO2 coming out of our car exhausts now, but we can create tons of it fermenting stuff to make the fuel. That's just stupid
Karl, thanks for responding. I couldn't agree with you more about biofuel. My first post outside the boiler room was on just that topic. Wish I had the ability to post a link to it, it was a firestorm that went on for many pages. In just a few short months, some of those posters have changed their tunes, which is good. Others just don't seem to come around too often, which is bad. If my opionated, passionate writing style drove them away, I am deeply sorry. It just seems to me that we are facing a crisis of epic proportion, of which many citizens of even our relatively educated country are in deep denial or complete ignorance thereof.
The bottom line is this though. The powers that be, so far, have done little to actualy end our dependence upon foriegn oil or decrease Greenhouse Gas emmisions, except in miniscule self defeating ways which only enrich themselves or their best contributers. Half measures such as hybrid cars, most of which actuly get LESS m.p.g. than a V.W. diesel, only delay the inevitable nesassary swicth to electric cars(and trucks-at least local delivery), charged by solar panels or other means which utilize NO fossil fuels, such as Hydro, Wind, Tidal current, Waste Vegatable Oil, Geothermal, and Solar Thermal. The undisputible truth is that anyone who lives in a house could charge their electric car from solar panels on the roof of their house. Worst case scenario, one who lives in a condo, or apartment and is one of the fifty percent of the country to still receive electricty from Coal fired plants, still is responsible for less CO2 output, than one driving a Hybrid
As usual, it will be individuals to show our leaders the way. Unfortunately, most renewable technology require high capital costs--I simply cannot afford most of the technology I would gladly use. This prevents me from charging my imaginary electric from solar panels I cannot afford. However, I am not resigned to defeat, I do what I can. But until this technology becomes affordable for the average citizen, then the transformation of our society will not be possible.
I believe renewable energy can do for power distribution what the internet did for computing. Imagine every household tied into the grid producing enough power where the need for centralized power generation as we know it is unnecessary. I would like local power cooperatives to spring up in the US and around the world in the way they work in Denmark.