Method Exit Bag Suction Device

[awaitingdeath]

Pardon me if I sound stupid. I am thinking of a simple exit bag set up which consists of a big plastic bag tightly tied around the neck. One tube feeds inert gas and a suction device that promptly removes air from the bag. Instead of tying the Exit bag slightly loose we tie it pretty tight and bank on the suction device to remove the exhaled gas. Do you think this will work ?

 

[Kapsyl]

Sounds like you're describing a relief valve/exhale valve setup. There's no need to forcefully remove "air" from the bag unless your intentions are to purge the co2 and reuse the inert gas.

The elastic around the neck already functions like a relive valve with the overpressure pushing out the co2. If you would forcefully suck "air" from the bag it would require a huge flow of inert gas to compensate the loss of pressure. If the pressure is less than the suction of the hose it would form a vacuum which would stick the bag onto your face.

 

[limeoctave]

Pardon me if I sound stupid. I am thinking of a simple exit bag set up which consists of a big plastic bag tightly tied around the neck. One tube feeds inert gas and a suction device that promptly removes air from the bag. Instead of tying the Exit bag slightly loose we tie it pretty tight and bank on the suction device to remove the exhaled gas. Do you think this will work ?

i don't think so, you will likely just remove the inert gas that feeds into the bag