<html><body><div style="color:#000; background-color:#fff; font-family:tahoma, new york, times, serif;font-size:12pt"><div style="RIGHT: auto"><SPAN style="RIGHT: auto">I suppose insulating the hull causes all sorts of other problems. I used to lower my red sub into the water off the barge and let it cool the interior of the sub cool down. If I did not cool it down, I had condensation problems. Cooling the sub to close the temperature gap<VAR id=yui-ie-cursor></VAR> helped a lot.</SPAN></div>
<div style="RIGHT: auto"><SPAN style="RIGHT: auto">Hank</SPAN></div>
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<DIV class=hr style="FONT-SIZE: 0px; BORDER-TOP: #ccc 1px solid; HEIGHT: 0px; BORDER-RIGHT: #ccc 1px solid; BORDER-BOTTOM: #ccc 1px solid; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 5px 0px; BORDER-LEFT: #ccc 1px solid; LINE-HEIGHT: 0; PADDING-RIGHT: 0px" readonly="true" contenteditable="false"></DIV><FONT size=2 face=Arial><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Alan <alanlindsayjames@yahoo.com><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Monday, October 7, 2013 5:25:26 AM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [PSUBS-MAILIST] Air conditioner<BR></FONT></DIV>
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<DIV>That's a great find Joe,</DIV>
<DIV style="RIGHT: auto">It's designed for the environment & gives us an idea of size & amp draw.</DIV>
<DIV style="RIGHT: auto">It would be ok for surface transit but would need a through hull valve where it pumped water in,</DIV>
<DIV style="RIGHT: auto">that you could close before diving. I doubt the heat exchanging unit & pump would take</DIV>
<DIV>the ambient water pressure at depth. As said, the Triton Heat exchanger is outside in the water</DIV>
<DIV>& would ( I'm guessing ) just have fresh water at ambient pressure running through it.</DIV>
<DIV> I like what Phil said they do, with the ice pads. There are all sorts of spaces you could pack</DIV>
<DIV>them in.</DIV>
<DIV>Alan</DIV>
<DIV><BR>Sent from my iPad</DIV>
<DIV><WBR>On 6/10/2013, at 11:08 PM, Joe Perkel <<A href="mailto:josephperkel@yahoo.com" rel=nofollow target=_blank ymailto="mailto:josephperkel@yahoo.com">josephperkel@yahoo.com</A>> wrote:<WBR><WBR></DIV>
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<TD vAlign=top>Here's a 12VDC unit<BR><BR><A href="http://www.tropicalmarineairconditioning.com/sheets/2425C.pdf" rel=nofollow target=_blank>http://www.tropicalmarineairconditioning.com/sheets/2425C.pdf</A><BR><BR>This one is dedicated DC, ..but I think running a similar sized AC unit off an inverter for dual power source options is worth considering. Powering the unit on the surface as I described in an earlier post. I don't propose diving with the unit running, but more so a pre and post mission environmental purge, particularly with the main goal of aggressively dehumidifying the cabin.<BR><BR>No space in these boats as you note, this requires upsizing accordingly, but carefully. I once calculated the volume of a sacrificed conning tower could be substituted for 48" and a shortened length for nearly the same weight, I forget the numbers for the moment.<BR><BR>These compact AC units can be plumbed as I described earlier, the heat exchanger would have
to be purposely designed. The outflow water of these units is pretty damn hot, much much hotter than the surrounding water.<BR><BR>I live through Vance's camel torture story for about five minutes every time I climb into my white SUV. <BR><BR>If I'm ever to build and have a practical Florida submersible, I've got to be cognizant of these issues and address then carefully. <BR><BR>Joe<BR><BR><BR><BR>Sent from Yahoo! Mail for iPad</TD></TR></TBODY></TABLE>
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<DIV class=hr style="FONT-SIZE: 0px; BORDER-TOP: #ccc 1px solid; HEIGHT: 0px; BORDER-RIGHT: #ccc 1px solid; BORDER-BOTTOM: #ccc 1px solid; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 5px 0px; BORDER-LEFT: #ccc 1px solid; LINE-HEIGHT: 0; PADDING-RIGHT: 0px" readonly="true" contenteditable="false"></DIV><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN> </B>Jon Wallace <<A href="mailto:jonw@psubs.org" rel=nofollow target=_blank ymailto="mailto:jonw@psubs.org">jonw@psubs.org</A>>; <WBR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN> </B>Personal Submersibles General Discussion <<A href="mailto:personal_submersibles@psubs.org" rel=nofollow target=_blank ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>>; <WBR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN> </B>Re: [PSUBS-MAILIST] Air conditioner <WBR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN> </B>Mon, Oct 7, 2013 2:32:22 AM
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<TD vAlign=top><BR>In the recreational, personal, sub-world you generally can't have your <BR>cake and eat it too. Put two adults in a small sub like the K250 and <BR>you sacrifice comfort for occupancy. Freon based AC units whether auto <BR>or household are not practical solutions for the traveling submariner, <BR>such as convention diving. There was zero space for such an AC unit on <BR>board the Boston Whaler used to tow SNOOPY out into the ocean, and the <BR>support boat was being tossed in 2-4 foot seas. It simply is not <BR>practical unless you are building a support boat specific for your sub <BR>diving and trailering it along with your submarine to the dive location.<BR><BR>The best solution for the average psubber is to use a small ice chest <BR>(six-pack size) stuffed with ice and then circulate cabin air over that <BR>ice. Use a small computer fan to force air over the ice if necessary. <BR>The first
refrigerators were nothing more than ice-chests, low-tech, <BR>easy maintenance, not super efficient but adequate to keep things <BR>relatively cool.<BR><BR>_______________________________________________<BR>Personal_Submersibles mailing list<BR><A href="" rel=nofollow>Personal_Submersibles@psubs.org</A><BR><A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel=nofollow target=_blank>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR></TD></TR></TBODY></TABLE></DIV></DIV></DIV></DIV></BLOCKQUOTE>
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