Dan,
As always, thank you for the real world assessment. This statement....
"When in the water, the cool hull condenses much of the humidity out of the air. What moisture that beads up on the hull from a day of diving never amounts to any actual water sloshing around. "
...is particularly helpful in visualizing what to expect.
I am going to guess that my living here in "muggyland" might give me a bit more water vapor in the cabin air at hatch closing than you in Penn but, the combination of a fan and Jay's simple "goober" can looks like the way to go.
I think I would keep the interior skin simply painted as you and Alec have for simplicity and maintenance unless I were to find the conditions here warrant otherwise.
Another "done deal" to be mentally filed away now for when the time comes.
Thanks to all who contributed to my initial insulation post.
Joe
From: "Dan H." <jmachine@adelphia.net>
Reply-To: personal_submersibles@psubs.org
To: <personal_submersibles@psubs.org>
Subject: Re: [PSUBS-MAILIST] More Dehumidifier
Date: Thu, 7 Sep 2006 22:13:06 -0400
I agree with Jay,I recently installed a 12 volt equipment fan in Persistence to make it more comfortable. I believe mine is rated at 100Cu.Ft./Min. A 70CFM fan would have been enough.High humidity makes it mighty uncomfortable but all it takes is some air movement and it feels much better. When in the water, the cool hull condenses much of the humidity out of the air. What moisture that beads up on the hull from a day of diving never amounts to any actual water sloshing around. After a day of diving I just leave the hatch open and it's all evaporated away the next day.I don't think there is much need for a dehumidifier in a P-sub. If the cost and power consumption were minimal and it took up little space, it might be nice but just moving the air around inside the hull makes a big difference.Just my opinion, Dan H.----- Original Message -----From: Jay K. JeffriesSent: Thursday, September 07, 2006 9:00 PMSubject: RE: [PSUBS-MAILIST] More DehumidifierPatrick,
Very informative article but almost all of it doesn't apply to PSUBS. While there is a small amount of moisture entrained in the atmosphere upon closing the hull up, the majority of moisture throughout a dive results from respiration and perspiration, (and God forbid if you should have a leak J). A submersible is cramped for space and constrained by available battery power.
R/Jay
Respectfully,
Jay K. Jeffries
Andros Is., Bahamas
Natura nihil fit in frustra
- Nature does nothing in vain
-----Original Message-----
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Patrick
Sent: Thursday, September 07, 2006 1:16 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] More Dehumidifier
Article on different types of dehumidifiers:
http://www.cmhc-schl.gc.ca/en/co/maho/yohoyohe/momo/momo_001.cfm
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