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[PSUBS-MAILIST] esmae update
I finally plastered my upper portion of the ferro cement structure and I'm
now keeping it wet with wet burlap. Unfortunately I was unable to keep the
tolerance for my pressure hull at 30" , so I will have to have it rolled at
29 1/2" in order for it to fit in there. That will mean that when I get the
30" end cap I'll have to cut it in a bit where the diameter begins to
decrease, I don't think it should be a problem though.
Also it looks like I will be using a 190DC OM621 Mercedes diesel as my
surface power plant. Those deliver about 55hp @ 4300 rpm, from what I've
read. I'm planning on sizing a dc generator to it and putting it in a
pressure vessel. The pressure vessel will not be able to be round however.
The width will accommodate a 26" half cylinder on the top and bottom but I
will have to add about 10" in the middle. I'm thinking some 3/4" thick wall
and if I can weld some extra supporting structure I will. For cooling I'm
looking a running the lines out to the ocean water and exchange the heat
directly through those lines. I just have to calculate the needed square ft
of transfer area. A keel cooler.
Brian
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