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Energy conversion

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H

Howard

Lifer
What technologies are available to handle the conversion of energy on the order of 1.5 MJ from kinetic to potential back to kinetic, at a rate of at least 200 kW?

Arbitrary figures - this is not for homework, I assure you.

Also, I would not define thermal energy as potential energy.
 
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Millions of sufficiently sized capacitors/memory shape alloys/flywheels/air compressors/springs. Of course, none of them seem too practical...
 
What kind of potential? Chemical potential? You could just use huge batteries. Gravitational potential? Big hydraulic things or just pushing something huge up a hill. etc.
 
Any kind of potential, as long as it is returned to kinetic form. And, the smaller the volume requirements, the better.
 
Guess it comes down to time allowed to "charge" and time needed to convert it back.

ofcourse, how long is it to be held can play into it as well.

A large weight / hill is slow for both, and has zero losses.

Quick you are looking at things like springs/compressed air/spining weights ect, but losses occur the longer it is held.

if volume is the biggest issue, then spining weights is the best I would think, but charge times is a little inefficient (IIRC, they do better with a "slow" spin up and not instantainious).
 
Hydro power plant which instead of putting power out to a grid, puts power to massive cap. banks. But you said the smaller the better .. soo..guess that's out. Guess you could replace the moving water/turbine with a motor. And how is a kW a speed of any sort?
 
^ Okay just checking.

Yeah idk how many motors could produce 1.5MJ of power. Seeing as the railgun BAE just tested was 32MJ.. and that thing is batshit crazy. But do tell if their are motors than have that kind of output.
 
z1ggy said:
^ Okay just checking.

Yeah idk how many motors could produce 1.5MJ of power. Seeing as the railgun BAE just tested was 32MJ.. and that thing is batshit crazy. But do tell if their are motors than have that kind of output.
Click to expand...
MJ is a unit of energy.
 
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