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RE: [PSUBS-MAILIST] OSS Scrubber Systems (fan)

To: <personal_submersibles@psubs.org>
Subject: RE: [PSUBS-MAILIST] OSS Scrubber Systems (fan)
From: "Roger June" <rjune@fuse.net>
Date: Mon, 3 Feb 2003 02:07:34 -0500
Importance: Normal
In-Reply-To: <F158JTeKLLAtWVvbPWa000106b2@hotmail.com>
hmm that's a good question.

I think I'd like a low decibel fan that runs all the time.  Not so loud as
to be annoying but if it stops or say the bearings start to go out maybe the
change in noise level would be noticed.

By the way as you all conceder what fan to use ...here is a thought ... The
fans that run on my computer are quiet and cheap (less than $5.00)  I had
one go bad after about 3 years of continual use (I never turn off the
computer).  I know that some might object to the voltage that they run on
but I would think that there would be other electronics that will require
the same voltage.

As to the second question, you will need a scrubber just to have any dive
time.  A person can easily survive on less oxygen in the air (think about
flying in a small plane at 12,000 feet or climbing a mountain - not
Everest-)

*** what a person can't live on is a small increase in the percentage of
carbon dioxide that we breath in.***

Air entering the lungs contains about 0.04% carbon dioxide.
Air leaving the lungs contains about 4.4% carbon dioxide.

Prolonged exposure to levels above 0.5% or 5000 ppm is regarded as
potentially dangerous to human health, especially if accompanied by reduced
oxygen levels.

At 1.5% or 15,000 ppm people can suffer symptoms within an hour or two.

At 30,000 ppm or 3% and up, people can suffer serious symptoms, including
nausea, dizziness, mental depression, shaking, visual disturbances and
vomiting. If exposure persists, people may pass out, and if levels continue
to increase, they may die.

If this sound scary ...it should.  I think that a scrubber is not only
required but should be designed with a back-up system of some kind

Roger June
REJ and Company
4307 Delridge Rd
Cincinnati, Ohio 45205
Phone and Fax 513-251-8880
rej.co@fuse.net


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> -----Original Message-----
> From: owner-personal_submersibles@psubs.org
> [mailto:owner-personal_submersibles@psubs.org]On Behalf Of Pierre Poulin
> Sent: Sunday, February 02, 2003 22:14
> To: personal_submersibles@psubs.org
> Subject: RE: [PSUBS-MAILIST] OSS Scrubber Systems (fan)
>
>
> Roger,
>
> What is best to your opinion: a scrubber fan that always run at
> pretty low
> db or one that you run 1 minute out of 7-8 that have a higher db rating?
>
> Also, do you keep scrubber just in emergency case or always to
> augment your
> dive time?
>
> Pierre
>
>
>
> >From: "Roger June" <rjune@fuse.net>
> >Reply-To: personal_submersibles@psubs.org
> >To: <personal_submersibles@psubs.org>
> >Subject: RE: [PSUBS-MAILIST] OSS Scrubber Systems (fan)
> >Date: Sat, 1 Feb 2003 12:36:31 -0500
> >
> >Just a side note about fans in subs.
> >
> >In the deep dark "silent" world below the surface a fan can become very
> >noisy.  Additionally that noise tends to be louder in a steel
> shelled room.
> >
> >Roger June
> >REJ and Company
> >4307 Delridge Rd
> >Cincinnati, Ohio 45205
> >Phone and Fax 513-251-8880
> >rej.co@fuse.net
> >
> >
> >CONFIDENTIALITY NOTICE: This message, including any attachments,
> is for the
> >sole use of the intended recipient(s) and may contain confidential and
> >privileged information.  Any unauthorized review, use, disclosure or
> >distribution is prohibited.  If you are not the intended
> recipient, please
> >contact the sender by reply e-mail and destroy all copies of the original
> >message.
> >
> >
> > > -----Original Message-----
> > > From: owner-personal_submersibles@psubs.org
> > > [mailto:owner-personal_submersibles@psubs.org]On Behalf Of
> Pierre Poulin
> > > Sent: Friday, January 31, 2003 23:57
> > > To: personal_submersibles@psubs.org
> > > Subject: RE: [PSUBS-MAILIST] OSS Scrubber Systems (fan)
> > >
> > >
> > > I find the fan on the Mc-Master site (www.mcmaster.com). The part
> > > number is
> > > 19665K11. There is also a 4" version for about the same price but
> > > with 240
> > > cfm...
> > >
> > > I like to go on the mc-master site. They have about everything.
> > >
> > > Now I'm looking for a recipient that can be easily attached
> to the fan
> >to
> > > hold the lime. Alec, what did you used in your design?
> > >
> > > Pierre
> > >
> > > P.S. the fan have 5 amp. Is that too much? I know nothing
> electrical...
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > >From: "Warrend Greenway" <dub@linuxmail.org>
> > > >Reply-To: personal_submersibles@psubs.org
> > > >To: personal_submersibles@psubs.org
> > > >Subject: RE: [PSUBS-MAILIST] OSS Scrubber Systems
> > > >Date: Sat, 01 Feb 2003 09:18:56 +0800
> > > >
> > > >Hey! That's a nice looking fan. Where did you find that baby?
> > > It's probably
> > > >better for the fan to be overkill, rather then under-kill,
> since we can
> > > >always
> > > >shut it on and off automatically, with a manual over-ride.
> > > >
> > > >Warren.
> > > >
> > > > > Alec,
> > > > >
> > > > > What do you think about that fan?
> > > > >
> > > > > Compact Direct-Drive DC Axial Duct Fan 12 VDC, 140 Cfm @ 0"
> > > SP, For 3"
> > > >Duct
> > > > > Diameter
> > > > > $ 40.27 Each
> > > > >
> > > > > Look at the attach picture! It has a nice mounting and
> easy pluging.
> > > > >
> > > > > Pierre
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > >From: "Alec Smyth" <Asmyth@Changepoint.com>
> > > > > >Reply-To: personal_submersibles@psubs.org
> > > > > >To: <personal_submersibles@psubs.org>
> > > > > >Subject: RE: [PSUBS-MAILIST] OSS Scrubber Systems
> > > > > >Date: Fri, 31 Jan 2003 16:08:39 -0500
> > > > > >
> > > > > >Thanks Pierre. One thing I'd point out is if I were to build
> > > it again I
> > > > > >would use stronger fans. There's a post someone made with a
> >specific
> > > >make
> > > > > >and model recommendation on a fan that several people are using
> > > > > >successfully.
> > > > > >
> > > > > >thanks,
> > > > > >
> > > > > >Alec
> > > > > >
> > > > > >-----Original Message-----
> > > > > >From:	Pierre Poulin [mailto:pipo305@hotmail.com]
> > > > > >Sent:	Fri 1/31/2003 12:52 PM
> > > > > >To:	personal_submersibles@psubs.org
> > > > > >Cc:
> > > > > >Subject:	Re: [PSUBS-MAILIST] OSS Scrubber Systems
> > > > > >
> > > > > >Warren,
> > > > > >
> > > > > >I can take the scrubber if you want. I kept all the mail that was
> > > >passing
> > > > > >conserning the scrubber. Specialy the Alec Smith edition
> > > wich is pretty
> > > > > >good
> > > > > >to my opinion.
> > > > > >
> > > > > >What about that?
> > > > > >
> > > > > >Pierre
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > >From: "Warrend Greenway" <dub@linuxmail.org>
> > > > > > >Reply-To: personal_submersibles@psubs.org
> > > > > > >To: personal_submersibles@psubs.org
> > > > > > >Subject: [PSUBS-MAILIST] OSS Scrubber Systems
> > > > > > >Date: Sat, 01 Feb 2003 01:11:38 +0800
> > > > > > >
> > > > > > >Hey, Mark and Pierre. There seems to be quite a bit of
> immediate
> > > > > > >interest in CO2 scrubbers. We will need to deal with scrubbers
> > > > > > >for the OSS sooner or later, so perhaps now is the time to
> > > > > > >coordinate the interest and effort available to consolidate all
> > > > > > >the information we will need. Takers?
> > > > > > >
> > > > > > >Warren.
> > > > > > >--
> > > > > > >______________________________________________
> > > > > > >http://www.linuxmail.org/
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> > > > > >
> > > > > >
> > > > > >
> > > > > ><< winmail.dat >>
> > > > >
> > > > >
> > > > > _________________________________________________________________
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> > > ><< fan.jpg >>
> > > >
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References:
- RE: [PSUBS-MAILIST] OSS Scrubber Systems (fan)
  - From: "Pierre Poulin" <pipo305@hotmail.com>
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