Hello everyone! There's something I'm quite concerned about and prevented me from putting on my helmet for longer durations during last year's convention. Namely, it's the problem of fresh air. Just for clarification, I'm talking about the ODST helmet. I installed a 12v standard size pc fan on the top of my helmet, pictured here:
It runs great and blows quite a bit of air right on my face, There's no fogging either but I didn't really sweat so I guess I didn't stress test that factor enough. However, I'm concerned that the fan is recycling the air over and over again, especially since the only real way for new air to go in and old air to go out is the chin-area seen in the bottom of my picture. Furthermore, I wear a shemagh (a sort of scarf) around my neck further restricting airflow for that part. You can see it right here:
Is chocking or dying because of too little air a real concern? What can I reasonably do about it? I'm already working sketches for a better ventilation system where two rotary fans pull air from my neck to the forehead but with such long conduits, the air pressure and resistance will be so high that I'm afraid it won't make any difference anyway.
Furthermore, IF chocking is a concern, what are signs to look out for? I've done my own research on this part but surprisingly googling this brings up little to no information and whatever information I could find is either not trustworthy enough for me to let my life depend on it, or just contradictory with all the other information I could find.
AFAIK now you'll feel like you're being chocked, but other sources say it'll give you a euphoric sensation with loss of higher brain function quickly following behind.
Thanks in advice, you might just save a life
EDIT: Before you ask, drilling holes isn't really a possibility, sorry
It runs great and blows quite a bit of air right on my face, There's no fogging either but I didn't really sweat so I guess I didn't stress test that factor enough. However, I'm concerned that the fan is recycling the air over and over again, especially since the only real way for new air to go in and old air to go out is the chin-area seen in the bottom of my picture. Furthermore, I wear a shemagh (a sort of scarf) around my neck further restricting airflow for that part. You can see it right here:
Is chocking or dying because of too little air a real concern? What can I reasonably do about it? I'm already working sketches for a better ventilation system where two rotary fans pull air from my neck to the forehead but with such long conduits, the air pressure and resistance will be so high that I'm afraid it won't make any difference anyway.
Furthermore, IF chocking is a concern, what are signs to look out for? I've done my own research on this part but surprisingly googling this brings up little to no information and whatever information I could find is either not trustworthy enough for me to let my life depend on it, or just contradictory with all the other information I could find.
AFAIK now you'll feel like you're being chocked, but other sources say it'll give you a euphoric sensation with loss of higher brain function quickly following behind.
Thanks in advice, you might just save a life
EDIT: Before you ask, drilling holes isn't really a possibility, sorry