Another NON-technical person that believes that pressurized air is free to the consumer.
However, what happens is that the air-tank is both pressurized and heated simultaneously. But as the heat leaves the tank (by internal radiation heat that leaves the tank) Once cooled, the compressed air delivers far LESS pressure because the heat is gone.
The bottom line? You won’t make a gain AT ALL. You can only hope that you could use-up the tank before it cools. But on the other hand, you should find another method to make energy.
When scuba tanks are filled they are immersed in a water tank to cool off the heat coming from the compression............