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Old Jul 28, 2009, 05:30 PM
USA'd ex Brit
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Keel Cooling

Most modern harbor tug's i have seen have an enclosed cooling system and radiators / keel coolers under the hull and so not have to draw water from around them to cool on board equipment before pumping it overboard once it has done its cooling job.

Seeing as I'm building a modern style harbor tug with a heavy duty pair of Z Drives, i thought i would have an attempt at producing a pair of keel coolers to fit under the hull.
This tug will be doing some heavy pushing and shoving, so I'm going to do an enclosed cooling system with the ESC's cooled and the motor's cooled via these keel coolers and a pump.

Using some brass and copper tube, I've produced these...
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Old Jul 28, 2009, 05:34 PM
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OOOOO, copper cores!!!

NEAT!!!
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Old Jul 28, 2009, 05:50 PM
no wings any more, just dust!
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novel idea, complete with header tank as well?
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Old Jul 28, 2009, 05:52 PM
USA'd ex Brit
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Quote:
Originally Posted by Ghost 2501
novel idea, complete with header tank as well?
Yup Ghost, the smallest Nitro car tank i could find...
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Old Jul 28, 2009, 05:55 PM
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Are you threading your own end-caps or buying them ready made somewhere? (I have a displacement oiler and oil trap I need to make in the next week or two...
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Old Jul 28, 2009, 05:55 PM
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Very nice, you have been busy the last couple of months! It would be interesting to measure the temperature of the equipment with and without the cooling system to see how well it works compared to the normal "suck in in from the pond, and pump it out the side" approach. It will look impressive though, and that's what really counts .

Phillip
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Old Jul 28, 2009, 06:05 PM
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Quote:
Originally Posted by Aerominded
Are you threading your own end-caps or buying them ready made somewhere?
I made them this morning Mr Aero...
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Old Jul 28, 2009, 06:14 PM
no wings any more, just dust!
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whats driving the pump, seperate motor or is it PTO'd on the propshaft?
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Old Jul 28, 2009, 06:28 PM
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Hmmm - I seem to think that Toes showed us a nifty pump he had milled up a few months back..... I wonder....
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Old Jul 28, 2009, 07:21 PM
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Most keel pipe systems use a circulating pump, like an automotive water pump. No pressure as such created. I'm willing to bet that your pipes would woke fine by convection alone. Simplify the system, and if that is insufficient add a pump later.
Hats off to you for replicating the system.
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Old Jul 28, 2009, 07:53 PM
Grumpa Tom
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It looks really neat! But I am betting the usual 'suck and discharge' cooling would actually keep the components cooler than this enclosed system.
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Old Jul 28, 2009, 07:58 PM
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I have seen, and considered something similar, but as a between component cooler.
So that the water would come into the boat, cool a component, dissapate heat
through the "keel cooler, then run through the next component, then overboard...

It's neat to see someone setting one up in any configuration.
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Old Jul 28, 2009, 08:45 PM
USA'd ex Brit
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Quote:
Originally Posted by Ghost 2501
whats driving the pump, seperate motor or is it PTO'd on the propshaft?
Quote:
Originally Posted by Tugboat Andy
Hmmm - I seem to think that Toes showed us a nifty pump he had milled up a few months back..... I wonder....
Each system will have a separate pump / motor Ghost and in to a common header tank... though i do like your idea of PTO from the prop shafts...
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Old Jul 28, 2009, 09:44 PM
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Of course an open system would be "cooler" but it isn't as "cool"
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Old Jul 28, 2009, 09:59 PM
Taking care of the pond.
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That's Cool, Toes.
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