Search results for query: Boyle's law

The short story here is compression heats and expansion cools. So the gun tank gets warm and the scuba source tank cools adiabaticly. Once the rifle tank cools down to ambient, pressure drops a bit due to Boyles law.

...have smaller steel or aluminum tube tanks. The aluminum or steel acts as a heat sink during the filling process. The light weight CF tanks and the large volume of air means the heat can’t absorb fast enough, and then cools after filling resulting in a pressure drop." _1 Birdo Boyle's law Ron

...from a large storage tank and not using a compressor. When your newly filled tank cools down to room temp, the pressure drops (google Boyle's law for the physics). If possible, its best to leave a tank at the shop overnight, and have them top off the next day. You will still get a pressure...

...math was simply because the number of fills was eluding the poster in the first place. edit: OK, I see now. In a reply later the original poster asked for the math behind the calculators...got it. Sorry about that. I can't give you an answer, but I'm sure Boyle's Law factors into it...


Wondering, did you even read thru the replies? We have the answer....... http://airgunnation.dev/topic/please-help-me-do-the-math/#post-71450 but let's see what the physicist has to say......

...A gas is a gas. Heated, they expand. Cooled, they contract. Alternately, compress them they get hot, or evacuate them and they cool. Boyle's Law is pretty simple. Steam just provides a dramatic example because it contracts so very much when it is cooled that it actually creates a vacuum...