[MechEng]

Hi,
I'm a mechanical engineering student, so my knowledge of chemistry is a bit limited.
Therefore, I come to you for help.

I'm working on a project involving a miniature pneumatic engine (a pneumatic engine utilizes the energy of a high pressure gas, usually compressed air).
Since I need my engine to be as light as possible and it should work without fueling for about an hour, a compressed air tank will not provide enough energy.
One of the ideas that came up is to go in the direction of chemical reactions, for example, using a highly concentrated Hydrogen Peroxide (H₂O₂) and have it decompose to O₂ and H₂O.

The ideal solution for us will:

• React with gases carried in the air
• Not produce a lot of heat
• Be possible to start and stop easily

This energy source should provide about 60 Watts for 1 Hour (216 KJ).

I will appreciate any idea you might have, even exotic ideas utilizing dangerous materials or expensive ones.

Thanks.

[MechEng]

No ideas at all?

does anyone have an idea where I can look for these kind of ideas?

[Rabn]

Are you sure compressed gas will not work? Have you thought about argon or nitrogen as the gas?

W = -(volume of cylinder)(-initial pressure of the gas)

Have you determined what the output of your engine will be per cycle?