Well finally as i didnt get any answers yesterday and i was very... excited with the experiment i did it anyways, i submerged the thermos in boiling water for a long time, i needed some pressure but it was a big failure, i didnt get any constant pressure, only intermittent and very low, while i needed a good constant flow of N2.
Im considering to buy one of those tanks, they are around $400, do you think they will provide a constant supply of N2 if i fill them with LN2?
Do i have to put pressure in them? I really dont know how this works at all...