You don’t need any of that chemical nonsense to just have fun, though, as this compressed air cannon from [OtisLiu153] demonstrates. The build uses PVC pipes for both the barrel and the air tank.

A study has shown how geothermal energy in abandoned oil and gas wells can boost the efficiency of CAES by 10 per cent ...

[Tom] likes to build little helicopters and decided to build one that runs on compressed air ... His schlieren photography setup was interesting, too, and provided some cool photos of the ...

Researchers have found a way to enhance compressed-air energy storage (CAES) by utilizing geothermal heat in abandoned oil ...