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One liter of nitrogen can be bought for six cents if by the truckload, or a dollar or two in exceptionally small quantities.
It's actually cheaper to produce than bottled water.
By Crisp 06-04-04, 05:02 AM
When we take 1 litre of Liquid nitrogen and place it in a pressure vessel made of steel and seal this vessel, so that the vessel contains just Liquid Nitrogen.
Not a good idea. See below.
Does the vessel feel cold on the outside?
Yes. Steel and iron are very good heat conductors (usually good electric conductors are also very good heat conductors). This means that the steel is very good at taking energy in the form of heat from the outside and porting it to the liquid nitrogen. When you touch the vessel with your hand, energy from your fingertips is dissipated (i.e. your fingertip is cooled) and it is this sensation that makes you feel "cold".
Does the liquid Nitrogen remain at it's quantity even though the vessel is cold?
No. The room (the environment) is at roomtemperature, let's say 20°C. This is quite a bit higher than the freezing temperature of nitrogen, which is at 77 K or -196°C. Heat from the room will dissipate through the (nicely conducting) steel to the nitrogen, heating it up and evaporating it. The result will be quite disasterous: if you sealed the steel box, it will explode after a while, because 1 liter of liquid nitrogen will expand to about 22 liters of nitrogen gas.
The total amount of nitrogen is conserved (gas + liquid).
1 US gallon = 3.78541178 liters
Auto manufacturers in the US tend to size the fuel tanks in their cars to achieve at least 300 miles per tank under normal city/highway driving conditions.
So depending on the average fuel economy (MPG), a smaller car may have a 12 gallon tank, whereas a mid-size car is likely 16, and a larger SUV might be 20+. On average, I would say 16 gallons.
I would like to hear some input. If the price surges uncontrolably what are you going to do about it. Will you cut back driving leaving only essentials, will you look for thriftier transportation, small car , bicycle , car pool. Would you look at an electric vehicle or even attempt a conversion to an existing one. Lots of ways to look at it. Maybe even a small community ran methane plant, or electric generation. Just looking for opinions not to start an argument. thanks
Can you believe it ! The price of regular gas has just gone up to $5.40 a gallon this morning because speculators think that there might be a shortage due to political instability in the middle Est !!! Traders and speculators are making a fortune based on lies and made up scenarios. As far as we know nothing has changed in the middle Est concerning the amount of crude oil being pumped and exported and if something was to change, it would be to the western world's advantage due to having better control of the distribution and exportation of the product because of assuming control over it.
We are being shafted .......
Originally posted by baddmove
Thought this was pretty cool...
from 2007..anyone own one yet?
and for all you go-cart enthusiasts..
and you have to have the cool looking taxi too..
edit on 25-2-2011 by baddmove because: (no reason given)