There are multiple in-game saves that demonstrate ACEL's purposes and uses. Its most prominent use is that in high speed lasers, which utilize its acceleration property's to exponentially increase the speed of the passing photon particles so as to create a high speed laser, capable of quickly cutting through destructible materials, If accompanied by a heating mechanism.

[ A heating mechanism consists of closely placed Life or cloned heating elements, which directly or indirectly heat the passing photons, so as the photons get heated, their impact with the target material allows the photons to transfer their heat into that target, causing the target to melt. ]

@pedroc1999 (View Post)
ACEL can only be used on energy type particals

Accelerate air..?

Use two pumps with a pressure difference. Then again, it depends on how fragile you want it to be.
and the occasion you want to use it on.

Pressure differentials work amazingly good too.