Don't I need to know the velocity of the gas inside the two tubes in order to do the calculation? All I know is 150 SCCM of N2 are being fed into the 1/4" tube
Hi all,
I have a vacuum chamber which is consistently pumped out by a mechanical pump at the downstream end and is fed nitrogen at the upstream end. The path of the nitrogen is as follows: A mass flow controller regulates 150 SCCM flowing at all times. The N2 flows through several feet of 1/4...