Hello everyone,
I would like to modify my helium recovery system so that I can collect helium
during the filling procedure. Due to the relatively limited space, I have a
few questions about balloon size and compressor performance and I would be
very grateful for any experience from colleagues so that I can purchase the
right equipment.
- How much helium will be produced with a fill of 80-90 liters? I calculated
for 80 liters with a fill loss of 15% that max. 16 m³ will be released during
the fill (assuming the cold replaced gas will warm up from 4 K to 298 K). What
are the real numbers? Are there any empirical values?
- I probably only have space for a balloon of 10-12 m³. Do you have a setting
where the compressor starts during filling and compensates for a balloon that is
'too small'? A colleague told me, that it is possible, but I don't want to
miscalculate and it would be very helpful to hear about other cases. If you have
such a setting, what size balloon do you have? What is the compressor's flow rate?
At what percentage of the balloon volume does the compressor activate?
Best regards,
Sebastian
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Received on Tue Jul 29 2025 - 11:52:43 MST