Help Calculating time to recharge air tanks

[JamesCH95]

Originally Posted by Mike Bortfeldt

I think the error you are making is that the CFM compressor performance values you are using are at the inlet to the compressor, not the discharge. The compressor does not put out 0.53 cfm @ 60 psi, it compresses 0.53 cfm of atmospheric air (14 psia) when the discharge is @60 psi.

Mike

Using this tidbit (which makes sense, since it rates the compressor independent of ambient conditions and output temperature) methinks one can do a mass-conservation sort of calculation to take air at STP and a given flow rate and bring it to ST & raised pressure. Integrating the aforementioned flow-rate function (combined with another function or coefficient to account for mass conservation) is still the final way to solve this problem. I think.