keel cooling - Page 2 - SailNet Community
 10Likes
Reply
 
LinkBack Thread Tools
post #11 of 21 Old 08-01-2014
"Nubile Southern Sailor"
 
christian.hess's Avatar
 
Join Date: Sep 2013
Location: Columbus, Ga
Posts: 4,542
Thanks: 185
Thanked 184 Times in 180 Posts
Rep Power: 2
 
Re: keel cooling

you have a steel boat right? its pretty damn easy to rig on a steel boat, especially of you are in colder waters...

I like the idea if using the hollow skeg as the cooler too

pics?

Islander 36 now FOR SALE!
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
christian.hess is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #12 of 21 Old 08-02-2014
Wingnut
 
Join Date: Apr 2014
Location: Quadra Island
Posts: 70
Thanks: 1
Thanked 5 Times in 5 Posts
Rep Power: 2
 
Re: keel cooling

I almost have a steel boat.
Still sitting inn the yard.
So, yeah it is easy to do with steel, and evenn easier to do if you are building it yourself from scratch.
Maybe i will upload a bunch of pictures one day, but for now, I dont have time.
Dirtyfloats is offline  
Quote Quick Reply Share with Facebook
post #13 of 21 Old 08-02-2014
Senior Member
 
fallard's Avatar
 
Join Date: Nov 2009
Location: Mystic
Posts: 962
Thanks: 1
Thanked 13 Times in 12 Posts
Rep Power: 6
 
Re: keel cooling

Our Isotherm in-water heat exchanger is a coil inside the bronze thru-hull fitting for our galley sink drain. The coil is completely within the hull fitting. The fitting itself looks much like a conventional fitting, but a little wider and notable for the ring of 1/4" perforations, and protrudes perhaps 3/16" so as to produce little disruption in flow over the hull. The first year we used a special zinc, but it proved unnecessary and we haven't used it since (at least 10 years).

We see absolutely no fouling inside the hull fitting and the coil is perfectly clean. My understanding is that the darkness inside the fitting and the heat associated with its function are more than sufficient to eliminate growth.
Minnesail likes this.
fallard is offline  
Quote Quick Reply Share with Facebook
post #14 of 21 Old 08-03-2014
Senior Member
 
fallard's Avatar
 
Join Date: Nov 2009
Location: Mystic
Posts: 962
Thanks: 1
Thanked 13 Times in 12 Posts
Rep Power: 6
 
Re: keel cooling

Here's a picture of the isotherm thru hull. The center is carries the drain from the galley sink. The perforations allow water flow into the cooling coil area. Two of the perforations are threaded to accommodate a special zinc--if you need to use one. The marelon thru hull to the left accommodates a 5/8" raw water intake hose (for scale).

The photo was taken after installing the thru hull 11 years ago. The coil was virtually just as clean prior to launch this year and I have never had to touch it. It just wasn't as shiny as new.

fallard is offline  
Quote Quick Reply Share with Facebook
post #15 of 21 Old 08-04-2014 Thread Starter
Sea Sprite 23 #110 (20)
 
mad_machine's Avatar
 
Join Date: Dec 2012
Location: Atlantic City, NJ
Posts: 3,217
Thanks: 5
Thanked 69 Times in 60 Posts
Rep Power: 3
 
Re: keel cooling

that is pretty cool (sorry about the pun!) looking

Art Haberland
__________________

In the end all that matters is how fully you loved, how gently you lived, and how gracefully you let go of things that did not belong to you -Buddha

__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
mad_machine is offline  
Quote Quick Reply Share with Facebook
post #16 of 21 Old 08-04-2014
Senior Member
 
Join Date: Sep 2013
Location: nelson new zealand
Posts: 126
Thanks: 0
Thanked 3 Times in 3 Posts
Rep Power: 2
 
Re: keel cooling

My yacht has keel cooling no external pipes just a tank in the keel it works really well have had no issues.Never gotten hot when the boat has a furry bum.A lot less hassle than a heat exchanger
Brent Swain likes this.
harmonic is offline  
Quote Quick Reply Share with Facebook
post #17 of 21 Old 08-04-2014
Over Hill Sailing Club
 
smurphny's Avatar
 
Join Date: Feb 2009
Location: Adirondacks NY
Posts: 3,460
Thanks: 86
Thanked 99 Times in 96 Posts
Rep Power: 7
 
Re: keel cooling

Quote:
Originally Posted by fallard View Post
Here's a picture of the isotherm thru hull. The center is carries the drain from the galley sink. The perforations allow water flow into the cooling coil area. Two of the perforations are threaded to accommodate a special zinc--if you need to use one. The marelon thru hull to the left accommodates a 5/8" raw water intake hose (for scale).

The photo was taken after installing the thru hull 11 years ago. The coil was virtually just as clean prior to launch this year and I have never had to touch it. It just wasn't as shiny as new.

Ditto here. I have the same thru-hull and spent last winter in very warm, growth-prone water. The inside of the device remained clean.

Alberg 35: With a philosophical flourish Cato throws himself upon his sword; I quietly take to the ship.
smurphny is offline  
Quote Quick Reply Share with Facebook
post #18 of 21 Old 08-08-2014
1974 Cal 29
 
Join Date: Aug 2012
Location: Bradenton, FL
Posts: 30
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: keel cooling

In debating my diesel re-power, I've considered some air-cooled diesels. My plan was to cool the oil for the engine. I would use the existing through-hull to let sea-water into a tube, inside which a coil of copper tubing is wound for the oil to run through. A diaphragm pump would pull water out of the other end of the tube and pump it into the exhaust pipe. The only concern is that a broken oil cooler line would lead to seawater in the wrong part of the engine!
Seafarer is offline  
Quote Quick Reply Share with Facebook
post #19 of 21 Old 08-08-2014
Senior Member
 
Join Date: Oct 2011
Location: Nanaimo B.C.
Posts: 2,525
Thanks: 3
Thanked 56 Times in 56 Posts
Rep Power: 4
 
Re: keel cooling

Most transmissions are water cooled so there's no problem in cooling engine oil same way but why a 'diaphragm ' pump? go to all the trouble of bringing salt water in and cooling the exhaust and still have to deal with lots of hot air and noise. As for keel cooling, big difference between the needs of a little fridge and a 671 Jimmy.

Last edited by Capt Len; 08-10-2014 at 07:29 PM.
Capt Len is offline  
Quote Quick Reply Share with Facebook
post #20 of 21 Old 08-12-2014
1974 Cal 29
 
Join Date: Aug 2012
Location: Bradenton, FL
Posts: 30
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: keel cooling

It's a small electric 300GPH diaphragm pump. I already have it, and figured it would be the easiest way to rig a pump, as it's just a few hose-clamps to hook up to the heat exchanger.

I'm not really sure of any electric water pump that is rated to run for days at a time....
Seafarer is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Cooling problems - Help please tspooner General Discussion (sailing related) 14 08-05-2013 03:56 PM
Keel cooling Old dream General Discussion (sailing related) 7 07-23-2013 07:58 AM
Cooling system wonbae Diesel 3 11-25-2010 01:48 PM
Cooling Cabin wvnutt Gear & Maintenance 22 07-16-2007 09:54 PM
Cooling Systems hearts desire Gear & Maintenance 1 05-30-2003 05:31 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome