From: Bob Blick <bobblick@outlook.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
Sender: "piclist-bounces@mit.edu" <piclist-bounces@mit.edu>
Date: Wed, 25 Mar 2020 15:26:14 -0700
Subject: Re: [OT]:: some COVID19 science / tech questions
Thread-Topic: [OT]:: some COVID19 science / tech questions
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A couple of months ago you could get a used oxygen concentrator for $200-30=
0, but those are all gone from my local craigslist.

And a few of random thoughts.

Building an oxygen concentrator seems very challenging. I would worry first=
 about the quality of the air coming from a compressor. Even an oilless com=
pressor, unless it was for scuba use, would likely have some oil. I doubt t=
he compressor from an old CPAP machine would have enough pressure to work i=
n a concentrator.

Hose, piping, tanks and valves would need to be safe for breathable air. Re=
gular airtool hose would likely add a plastic or rubber component to the ai=
r. And how about impurities in the zeolite itself?

How much oxygen can you get from electrolysis? That might be an easier rout=
e. Although 2 to 5 liters per minute is a lot of oxygen.

Best regards, Bob

________________________________________
From: piclist-bounces@mit.edu <piclist-bounces@mit.edu> on behalf of David =
Van Horn
Sent: Wednesday, March 25, 2020 3:04 PM
To: Microcontroller discussion list - Public.
Subject: RE: [OT]:: some COVID19 science / tech questions

Used oxy concentrators are on craigslist for a couple hundred $.
A homebrew one sounds pretty dangerous if your life is going to be dependin=
g on it.
If I get that bad I'm going to ER.


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