Re: [PSUBS-MAILIST] radiator cooled ambient sub

Thanks N P,

Have a nephew with a garage that's picking me up a cheap radiator type oil cooler and fan.

So I'll try that first. If it doesn't work then it wouldn't be too much trouble to link this up to your system.

Have saved the link, its another trick up my sleeve. I'll test it out and post the results probably in a couple

of months time.

Regards Alan.

----- Original Message -----

From: Nomdae Plume

To: personal_submersibles@psubs.org

Sent: Sunday, March 15, 2009 6:00 AM

Subject: RE: [PSUBS-MAILIST] radiator cooled ambient sub

Hi Alan:

I belong to a number of small-car newsgroups, and the subject of cooling comes up frequently since many of the cars discussed have engines not designed to support A/C.

While you're idea has merit, and will work to some degree, I don't think you'll get the amount of cooling you'll require out of this system unless you're diving in some really cold water... and always moving forward.

One solution many people go with is using an ice-chest packed with ice & water and a pump to circulate the cold water through a small radiator. Take a look at the following link: http://www.instructables.com/id/Portable-12V-Air-Conditioner---Cheap-and-easy!/

In the confines of a small sub, this should cool you quickly. And once you're underwater, you should be able to either turn it off or run it occasionally.

Stay cool,
-- NP

From: alanjames@xtra.co.nz
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] radiator cooled ambient sub
Date: Thu, 12 Mar 2009 13:07:32 +1300

Hi Psubers,

While talking with a fellow member on Saturday, he informed me that it got hot really fast in his metal ambient sub. And that he had his air supply blowing round his head for cooling.

As I'm making a much smaller fiberglass ambient sub, I'm figuring I'll get even hotter.

What I'm considering is having a forward water intake on both sides of the hull to an aluminium radiator or transmission oil cooler, with the outlets placed near the thrusters to create water movement. There will be intake filters, taps and a thermostatically controlled fan in the system. I'll flush it out after each dive.

Does this idea have any merit?

Any experience, thoughts or adverse comments will be appreciated as it will be a lot of mucking about evaluating it outside the sub. And I can't put it in later.

I'm not sure of the size, it could be a 280mm x 180mm transmission cooler , a 280mm x 180mm radiator or anything in between. If anyone has thoughts on the

size that would be appreciated too.

Thanks,

Regards Alan

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