[PSUBS-MAILIST] Manual Scrubber

[James Frankland via Personal_Submersibles]

Hi all.
Ive been experimenting with various manual "breath through" scrubbers for
use in an emergency, and i have finally come up with a solution that works
for me.

Ive been testing an anesthesia scrubber cartridge.  This has turned out
really well.

Previously I made breathing tubes and masks that utilized the main
scrubber, but the trouble is that they were all too difficult to breath
through.  I made one with a battery electric fan to assist in breathing and
even one with a CPR bulb in line to assist.  Nothing really worked, but
this new one is really good.

Its a cartridge for an anesthesia machine and has spherical balls on CO2
absorbent which makes it easy to breath through.  I used various different
masks until i got one that was easy enough to adapt to the hose and
comfortable.

I only did half an hour as it was so hot, but I got cabin CO2 from 5000ppm
to 600ppm I think.  The main scrubber was on, but obviously the manual one
was taking the most of it.

Anyway, I feel much more confident I can control CO2 in an emergency now.

If anyone is interested, i can send more details of the parts used and
modifications, which were super simple.

Pic attached and a video of me using it.  Skip to 7:35 for the manual
scrubber test.

Regards
James

https://www.youtube.com/watch?v=yyHlPgrN57Q


[image: 20210619_170803.jpg]
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20210620/6d9f013e/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 20210619_170803.jpg
Type: image/jpeg
Size: 187411 bytes
Desc: not available
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20210620/6d9f013e/attachment-0001.jpg>