----- Original Message -----
Sent: Monday, February 08, 2010 5:57 AM
Subject: Re: [PSUBS-MAILIST] Condensation in a psub
In a message dated 2/7/2010 7:12:22 A.M. Pacific Standard Time, jonw@psubs.org writes:
Condensation is an issue as well but hopefully we can find
solutions to
counter it.
This brings up a point that has sparked my interest on several
occasions.
We've heard mention of condensation on windows, bilge areas, and
general corrosion issues inside our subs.
Good paint, diligent maintenance, and the use of stainless and
epoxy potting where possible are methods to help keep the damage to a minimum.
I have tried to keep my various fabrications and overall design geared toward
maintainability as much as possible, knowing that I'll need to grind out and
re-paint on a regular basis. No computers on-board but some
electronics are necessary. ( my Margarita blender has a hand crank )
Preventing and managing condensation could be a large part of a
good maintenance program.
The air circulatory system in our little boats seems like the logical
place to attack the problem of excess condensation.
With or without a CO2 scrubber system, it could be beneficial to
have a water scrubber in a psub.
I wonder how a canister of desiccant could be incorporated
into the duct system, or how effective it would be at removing moisture from
the cabin air.
Some of our northern members like Dean have expressed interest in
a heater for the sub. Others have mentioned the increased moisture when
operating in tropical waters.
Can a canister of desiccant be dried out and re-used ?
How much electrical energy would be used to drive such a system ?
How much air volume would need to be processed per person ?
Can a "water trap" be made with a reservoir that can be
dumped after each dive ?
How much water actually collects in a sub ?
Does a bilge need a pump or would a sponge be enough to evacuate
the water ?
Anybody got any ideas on this ?