4 ms·
So how many joules can it contain? I mean, technically I can get a super cap the size of jam jar to kick out 1 kw, just not for very long. A watt is a unit of
by KaiserPro 12y ago
So how many joules can it contain?
I mean, technically I can get a super cap the size of jam jar to kick out 1 kw, just not for very long.
A watt is a unit of how much energy is expended in a second, not how much energy is stored. There is a reason why hydrostations in wales use lakes to store energy, because you need a lot of mass at great height to be of any use.
- bsilvereagle 12y agoWork = Force*distance, so theoretically the number of Joules would be mgh^2.
- schoen 12y agoYour units got messed up there -- it's just mgh. There's no reason to square the distance. $ units Currency exchange rates from 2013-07-11 2562 units, 85 prefixes, 66 nonlinear units You have: 1000 kg gravity 1 km You want: J * 9806650 / 1.0197162e-07
- bsilvereagle 12y agoThat's what I get for doing intermediate thermo & fluids all day and then trying to make a comment on basic dynamics. Thanks for the catch.
- schoen 12y agoSure. This is also neglecting the compressed air part of this technology (which thermodynamics might actually be quite appropriate for modelling!).