I Pneumatic/hydraulic energy storage

[physea]

Hello! Are there any systems that you can store rotational energy into pneumatic or hydraulic energy? Let's say we have a rotational shaft. How can I take energy from it and store it as pneumatic or hydraulic energy? And then re-use it?

 

[Drakkith]

I suppose you could run a compressor from your shaft that will compress air into a tank. Then you can use the compressed air however you want.

 

[Bystander]

Tesla "turbine?"

 

[physea]

I suppose you could run a compressor from your shaft that will compress air into a tank. Then you can use the compressed air however you want.

Would that work with liquids? Any hydraulic system to have a look?

 

[davenn]

Would that work with liquids? Any hydraulic system to have a look?

of course ... in use every day on heavy construction industry machines ... dozers, grader, excavators etc

 

[Drakkith]

Would that work with liquids?

You won't be able to compress a liquid very effectively, so that part won't work.

Any hydraulic system to have a look?

I know you could run a hydraulic system off of your shaft, but I don't know how you would store energy in a hydraulic system. Hydraulics are usually used to transfer the power from a power source, such as an engine or motor, to a location where that power is needed to do work, without needing mechanical linkages. However, if you're designing a system that can stored energy from a shaft, then you could incorporate hydraulics to get the energy back out of wherever you stored it.

 

[CWatters]

You could pump the liquid uphill and store energy in GPE.

 

[jrmichler]

Google hydraulic hybrid truck for applications of energy storage in hydraulic systems. The energy is stored in an accumulator, search term is hydraulic accumulator.