[Dsg-rich] flow capacity

[Amrit Yegneswaran]

george, 
it appears that for the forward carriage, we need 60,000 L/day of N2 (for LTCC and RICH [EC not included]). 
the pipe on the forward carriage is 500 ft long and 0.5" in diameter. 
at the input to the valve panel the pressure is 35 psi. 
the exit pressure is ~15 psi, i assume. 
the dewar is 1500 gallons ~5678 liquid liters ~ 4,000,000 gas liters. 
so, i reckon the dewar contains ~66 days worth of N2. 
how frequent is the N2 refills? 
i think we should top up the dewar when it is half full. 
amrit 

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