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<DIV>Joe,</DIV>
<DIV> </DIV>
<DIV>There have been several prior threads over the past few
years regarding non-compressor, onboard A-C systems such as modified ice
chests with computer fans. The cooling medium doesn't have to be
ice. It could even be steel bricks that have been cooled in a freezer or
in a container of dry ice if you're prepared to safely handle steel that's been
cooled to less that -109 F. Obviously the dry ice doesn't go into the
sub. You'll still get humidity reduction from the condensation on the
cooling medium.</DIV>
<DIV> </DIV>
<DIV>Triton, U-Boat Worx, and some others have onboard A-C systems that might
be compressor based. Maybe those who toured Triton can answer
that. I'd certainly like to see the specs on weight, capacity, battery
draw, etc. </DIV>
<DIV> </DIV>
<DIV>I don't plan on a mechanical system myself, but will depend on surface
cooling from a system on the tender. That's very similar to what Nuytco
uses. I'll use a small passive system onboard when necessary. </DIV>
<DIV> </DIV>
<DIV>Jim. </DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 4/13/2014 9:16:59 P.M. Central Daylight Time,
josephperkel@yahoo.com writes:</DIV>
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<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3 face=Calibri>Jon /Sean /
Jim,</FONT><o:p></o:p></DIV>
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<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3 face=Calibri>If I can simplify
the motor cooling with ambient water, all the better, I prefer the simplicity
of that method. But, I must, must, have air-conditioning! I must reduce cabin
humidity and temperature to comfortable levels, this is a manned steel drum in
the tropical sun! Plus, I want my electronics dry.</FONT><o:p></o:p></DIV>
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<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3 face=Calibri>My intent is to
isolate the machine space with a thermal bulkhead with the required lines and
piping routed through as appropriate. That machine space then force ventilated
to the outside in the sail for extended surface transits. I was figuring that
since I’m doing all this ventilating anyway that I would feed these outside
motor pods into this environment. But I do like the idea of keeping down the
number of thru hulls if I don’t need them and just use the passing
water.</FONT><o:p></o:p></DIV>
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<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3 face=Calibri>That bulkhead need
not be neither structural nor watertight, simply a thermal barrier with
manhole access to the goodies beyond. The space can be monitored with sensors
and video and a fire suppression system could be discharged without impacting
the occupants???</FONT><o:p></o:p></DIV>
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face=Calibri> </FONT></o:p></DIV>
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<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3
face=Calibri>Joe</FONT><o:p></o:p></DIV>
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<DIV dir=ltr><FONT size=2 face=Arial>On Sunday, April 13, 2014 10:11 PM, Jon
Wallace <jonw@psubs.org> wrote:<BR></FONT></DIV>
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<DIV>
<DIV class=yiv1355840777moz-cite-prefix><BR clear=none>A good part of the year
in your climate the outside air is likely to be hotter than the sea. I'm
not convinced there's a clear benefit outweighing the sea as a heat sink.<BR
clear=none><BR clear=none><BR clear=none>On 4/13/2014 8:45 PM, Joe Perkel
wrote:<BR clear=none></DIV>
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<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3 face=Calibri>I am considering
a scheme for dealing with electric motor cooling and would like input on the
viability of the idea and any pros or cons that I may be
missing.</FONT></DIV>
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<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3 face=Calibri>In looking at my
SeeHund replica, note that the torpedo/pod(s) length exceed needed battery
capacity. <SPAN> </SPAN>So the idea being that the aft ends of both
will house electric motors that are isolated from the battery
compartments.</FONT></DIV>
<DIV><FONT size=3 face="Times New Roman"></FONT></DIV>
<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3 face=Calibri>I’m thinking to
ventilate these aft motor units into the aft machinery space within the main
hull. Incidentally, the hull diameter will be 42” and the torpedoes #14
pipe. This will leave a significant airspace around these motor units
allowing me to use fan cooled motor cases.<SPAN> </SPAN>Each motor pod
could be connected with vent pipes for intake and output airflow, then the
machinery space itself force vented to the outside with
<SPAN> </SPAN>main induction and exhaust vents. <SPAN> </SPAN>All
this for continuous surface running of course. Submerged, the motor units
would be intermittent duty.</FONT></DIV>
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<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3 face=Calibri>The centerline
unit would be fully enclosed and not vented, therefore not as attractive for
continuous duty due to thermal constraints.</FONT></DIV>
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<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3
face=Calibri></FONT> </DIV>
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<DIV style="MARGIN: 0in 0in 10pt"><FONT size=3 face=Calibri>Joe</FONT></DIV>
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