But if the AC unit is in the sub, then the heat it takes out of the cabin goes back into? the cabin. I presume they?d need a heat exchanger plumbed to the outside? I have no plan whatsoever to do this, it?s just idle curiosity.
Snoopy, the K-250 I bought off Dale Heinzig, came with a resistor heater which Dale presumably found necessary in the frozen temperatures they?ve got up there. I?m afraid I removed that particular item to re-use the electrical circuit for a different bit of
equipment.
Cheers,
Alec
-----Original Message-----
From: Akins [mailto:lakins1@tampabay.rr.com]
Sent: Friday, February 18, 2005 1:11 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Cabin heat (take 2)
Since tourist subs often have many passengers aboard they have air conditioning to compensate for all the body heat. Also they need an airflow of cool air to flow over each of the portholes the passengers look out of so those portholes will not fog up
from the passengers being close to them and breathing on the glass.
This wouldn't just be for the surface. How do they do it? Just like the a/c unit in your car. With a compressor and condensor and fan. I went down in a sub in the caymans recently and they had the a/c on and directed at the portholes.
My dad's old gato class fleet sub from WW2 had air conditioning too. You could probably rig up an a/c unit to work in a small dry psub if you wanted to and had enough battery power. Hope this helped.
----- Original Message -----
Sent: Friday, February 18, 2005 11:50 AM
Subject: RE: [PSUBS-MAILIST] Cabin heat (take 2)
Actually this reminded me of something I've been curious about for a
long time. With tourist subs, I often see they have "air conditioning".
I presume this is when they are surfaced? Even so, I wonder how they do
that?
-----Original Message-----
From: Nomdae Plume [mailto:nomdae@hotmail.com]
Sent: Friday, February 18, 2005 11:10 AM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Cabin heat (take 2)
Thanks Carsten & Dan.
I didn't know if the metal hull of a psub was enough (or too much) of a
heatsink to warrant additional hardware. I've seen many posts regarding
the
condensation issue, and made the assumption that it must get kinda warm
inside a small psub.
--
NP
>From: Carsten Standfuss <Merlinsub@t-online.de>
>Reply-To: personal_submersibles@psubs.org
>To: personal_submersibles@psubs.org
>Subject: Re: [PSUBS-MAILIST] Cabin heat (take 2)
>Date: Fri, 18 Feb 2005 14:49:28 +0100
>
>If the cabin is small you need no heather.
>Your body generate about 150 Watt..
>
>In Sgt.Peppers I build the original electric heather out - and dive the
>boat in coold waters in a t-shirt.
>
>In Deepflight - a pressure hull made from grp or ceramic - it was
>obviously a cooling problem.
>
>regards Carsten
>
>
>Dan H. schrieb:
> >
> > Nomdae,
> >
> > Power is a precious commodity in a small sub. There isn't much to
spare
>for
> >
resistance heat. Just dress for the occasion. Cooling shouldn't be
>much of
> > a problem, unless you visiting some kind of under sea volcano vent.
The
> > water temp isn't hot. What is annoying when in colder water is the
>humidity
> > and condensation that builds up in the sub.
> >
> > Dan H.
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