"I still think that the best way to store power is the form of compressed air, at least for cars"
Work on a gas is equal to volume of gas x change in pressure. Note that to do this you need to use consistant units. So under SI you;ll need m^3 and Pa
So a 40l tank with a 300 atm (0.04m^3 x 30397800Pa) gives 1215912J of energy.
1HP is 746 Js^-1.
A 100 HP motor will last roughly 16 seconds. BTW The filling (compressing) process will raise tank temperature quite a lot and coll down quite a lot on emptying (not sure if it's enough to form ice ).
It is true that rolling friction of a vehicle is substantially lower than the power needed to start and you may feel 40l is small for a tank. Run your own numbers and see if it still looks good to you.
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@Andrew Cupeck
"I still think that the best way to store power is the form of compressed air, at least for cars"
Work on a gas is equal to volume of gas x change in pressure. Note that to do this you need to use consistant units. So under SI you;ll need m^3 and Pa
So a 40l tank with a 300 atm (0.04m^3 x 30397800Pa) gives 1215912J of energy.
1HP is 746 Js^-1.
A 100 HP motor will last roughly 16 seconds. BTW The filling (compressing) process will raise tank temperature quite a lot and coll down quite a lot on emptying (not sure if it's enough to form ice ).
It is true that rolling friction of a vehicle is substantially lower than the power needed to start and you may feel 40l is small for a tank. Run your own numbers and see if it still looks good to you.
Mine's the one with the physics text book in it.