[PSUBS-MAILIST] pulled thread line - submarine AC and heat

Thu Apr 4 17:57:15 EDT 2019

Alan, that is not rated for a depth.  Kittredge already has a design.  Mine
is a variation of his but 2".  

There are no pressure ratings on the balls.  Hugh

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
On Behalf Of Alan via Personal_Submersibles
Sent: Thursday, 4 April 2019 8:42 PM
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] pulled thread line - submarine AC and heat

Ok, while you guys have been sleeping I have been googling for a 

suitable snorkel valve, & come up with this Wagner item below.

I searched under "inverted vent check valve". I am not sure of the price of

the below item. 

If anyone knows of a good option I would be interested.

Maybe there is a suitable valve that can be hacked! Ie. Use the valve seat

& buy a hollow stainless ball.

Alan

https://wagerusa.com/pages/marine/1700series.html

image1.PNG

On 4/04/2019, at 6:03 PM, Alan via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:

Am thinking about having 2 snorkel valves for cooling in transit. 
One for air in & one for air out, with a descent blower circulating the air.
Any thoughts on how effective it would be? 
Hugh Fulton had a snorkel valve design on his Q-sub site but can't find it.
Assume you would need a hollow ball that floats up & seals the inlet &
an additional valve inside the hull for redundancy, with a blower on the
designated
Inlet.
Alan

On 4/04/2019, at 5:42 PM, Alan via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:

Hello Marc,

haven't heard from you for a while.

What calculation was off?

Peltiers are 1/4 as efficient as conventional AC.

Average car AC system uses 4hp which is 2,980W.

4 X 2980 = 11,920.

Wish it was off as I have bought 20 so far & I am going to need a lot of

batteries to keep up with a cars AC system.

I am starting to talk myself out of relying on them solely & in to a good
snorkel 

system that I could suck air through while transiting on the surface.

Alan

On 4/04/2019, at 4:38 PM, Marc de Piolenc via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:

Pretty sure your calculations are off.

Did some work with Peltier effect coolers a few years back.

Search for information on this technology as applied in the military. There
are many applications for which vapor-compression refrigeration is not
possible or too dangerous.

Marc

On 03/04/2019 9:18 AM, Alan via Personal_Submersibles wrote:

I don't know how many peltiers. If you based your air conditioning system

on a car which uses 4 hp or 2,980 Watts & factored in that peltiers are 1/4

as efficient as conventional air conditioning then you would need 11,920 W

to get the equivalent cooling! And then it's an unknown as the peltiers are

more efficient when there is a larger temperature differential between
sides.

On 3/04/2019, at 12:15 AM, Brian Hughes via Personal_Submersibles
<personal_submersibles at psubs.org <mailto:personal_submersibles at psubs.org>>
wrote:

Alan,

How many peltier chips do you think you'll use? Or need? I was kinda
planning the same idea, but was trying Kydex. I made a cover with a thin
sheet of clear plastic, but I wondered about durability. Hadn't thought
fiberglass. Doh.  The real reason is I picked up for free a vacuum
thermomolding machine and needed an excuse to play.

As per attachment I was thinking magnets, the chrome covered ones you can
get a home depot. Attach where needed.  Spread heat transfer paste on the
surface, etc. How will you attach yours? Building in piping for condensation
runoff?

For heat I'm going with a cigarette lighter socket into which I can plug my
heated vest I use on cold days on the Harley. Keep the core warm, etc.

Get Outlook for Android <https://aka.ms/ghei36>

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