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Re: CO2 Powered siren
Posted: Mon May 01, 2017 6:19 am
by SoundOff
https://www.youtube.com/watch?v=_DQ74fkUZ5k
If you hear it sound, you have ~30 seconds to evacuate the room before the main discharge
Re: CO2 Powered siren
Posted: Mon May 01, 2017 7:52 pm
by Model L
why does it work better with c02 than with just air. Higher pressure?
Re: CO2 Powered siren
Posted: Mon May 01, 2017 8:17 pm
by Chem_Boffin_6589
Model L wrote: ↑Mon May 01, 2017 7:52 pm
why does it work better with c02 than with just air. Higher pressure?
Different chemical properties.
Re: CO2 Powered siren
Posted: Tue May 02, 2017 2:54 am
by Daniel
CO2 expands much faster than compressed air. That's why collectors often use it to blow steam whistles without a boiler.
Re: CO2 Powered siren
Posted: Sun Jun 11, 2017 1:09 am
by tony991
I have a couple of CO2 sirens. Completely made of brass! I attached a couple of photos of them.