Pressure as a renewable source of energy

[abdo799]

I am designing a machine to produce electricity , using pressure as a source of energy.
So my question is simple, is there any machine or device that are used to produce electricity from pressure?

 

[mikeph]

Yes, google piezoelectrics.

 

[Vanadium 50]

Note that anything that leaves the pressure unchanged will not produce electricity.

 

[SteamKing]

Central station steam plants use lots of pressure to make electricity, though not directly of course.

 

[abdo799]

Yes, google piezoelectrics.

I know about piezoelectrics , they are not considered as power generators though, i am talking about a generator , to generate electricity on a bigger scale, like solar or wind

 

[abdo799]

Central station steam plants use lots of pressure to make electricity, though not directly of course.

doesn't a steam plant need a source of energy to produce steam ?

 

[SteamKing]

doesn't a steam plant need a source of energy to produce steam ?

They sure do. But pressure doesn't exist by itself, in a vacuum, so to speak.

 

[mrspeedybob]

Pressure by itself cannot be used to power anything. For that you need 2 regions of different pressure.

 

[russ_watters]

Hydroelectric dams (usually) also utilize the pressure energy of pressurized water to produce energy. Are we detecting a pattern yet?

 

[russ_watters]

Pressure by itself cannot be used to power anything. For that you need 2 regions of different pressure.

And something flowing between them.

 

[SteamKing]

It's like saying, I'm going to use me some high temperature to make an electric generator.

 

[abdo799]

Ok , thanks for your help