Dear all,
I have calculated the pressure drop along the 3.5 m capillary incl. 0.15 m with some extra pressure drop in the cartridge LHC style heater at 0.7 m distance around from the inlet.
Please see the attached excel and overview in powerpoint.
Two tested temperatures. 293 K start of the transfer (most critical for pressure drop) and 250 K to see how colder gas flow reduces the pressure drop. The excel spreadsheet only works with your own link to Hepak.
We should go for at least 7 mm inner diameter please! (Sorry for the inconvenience to change it). Laetitia was right!
Thanks Torsten