Refrigeration - SailNet Community
 
LinkBack Thread Tools
post #1 of 8 Old 08-11-2010 Thread Starter
Member
 
Dcneuro's Avatar
 
Join Date: Nov 2006
Location: Long Branch, NJ
Posts: 94
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
Refrigeration

I am, (and have been), thinking about adding refrigeration to my 32. I have been looking at the Sea Frost unit which is engine driven. If I understand correctly, this system only works off 110v, (shore power), and the engine. Sea Frost maintains that running the motor for thirty minutes will keep stuff cold most of the day? Anyone have any experience with these units? Anyone have any suggestions? Anyone with a 32 with refrigeration on board?

Dr. S.
"Eh Winds Up, Doc?"
Bristol 32
Dcneuro is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 8 Old 08-11-2010
Senior Member
 
remetau's Avatar
 
Join Date: Jan 2009
Location: Bradenton, FL
Posts: 780
Thanks: 0
Thanked 7 Times in 7 Posts
Rep Power: 7
 
We had friends that had an engine driven refrigeration. It did perform as suggested, but that was a problem when cruising. They had to be careful what they kept in the fridge since they could be gone more than 1 day while exploring a new port.

Don & Diana
sv Re Metau an HC33t

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
remetau is offline  
Quote Quick Reply Share with Facebook
post #3 of 8 Old 08-11-2010 Thread Starter
Member
 
Dcneuro's Avatar
 
Join Date: Nov 2006
Location: Long Branch, NJ
Posts: 94
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
By that I presume you mean that they were away from the boat by dingy and the fridge warmed up? If so, I don't think that would be any more of a problem than my ice having melted and needing to be replaced, (which is why I am entertaining this in the first place). I would imagine ice would still be needed with this system? I don't typically leave the boat for long, and I don't even own a dingy

Dr. S.
"Eh Winds Up, Doc?"
Bristol 32
Dcneuro is offline  
Quote Quick Reply Share with Facebook
post #4 of 8 Old 08-11-2010
Senior Member
 
Zanshin's Avatar
 
Join Date: Aug 2006
Location: Germany
Posts: 2,297
Thanks: 0
Thanked 29 Times in 27 Posts
Rep Power: 9
 
I had an engine-drive compressor on my last boat. The system worked very well, but 30 minutes isn't enough to get the eutectic solution down to the freezing point. 45-60 minutes would suffice and then I would get 2 days or more of very cold beverages from the fridge.
It boils down to how often you are willing to run your main engine at very low loads... but if moving around the engine time used to get into and out of anchorages/docks/harbours was more than enough to keep the reefer cold.
How powerful is your engine (the compressor takes a lot of HP from a small engine)?


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.
Zanshin is offline  
Quote Quick Reply Share with Facebook
post #5 of 8 Old 08-11-2010
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
It depends on how you are using the boat. For liveaboard or long term cruising, I would recommend getting a 12 VDC powered system, rather than a engine-powered system, since it won't require running the engine when you're at a dock with shore-power. Also, upgrading the electrical system's regeneration capability is not a bad idea in any case.

How large a refrigerator are you looking for? The Engel/Norcold portable units are pretty good choices if you need something that isn't too large. They have units as large as 60 quarts IIRC.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #6 of 8 Old 08-11-2010
Warm Weather Sailor
 
Vasco's Avatar
 
Join Date: Sep 2006
Location: Toronto
Posts: 1,007
Thanks: 0
Thanked 9 Times in 8 Posts
Rep Power: 9
 
Dr. S,

Whether you have an engine driven fridge or not depends on how you use your boat. If you intend to cruise I would say no to engine driven as you'd have to run the engine twice a day to keep the fridge up. A 12v system would be preferable but with 12v you'd have to look at your charging system and possibly have to go with more batteries, panels, wind and/or a Honda.

If you're tied up at the dock most of the time I would still go with the 12v system as shorepower and battery charger will keep it up and, with sufficient batteries, you might get away without more charging if you go out for a weekend.

12v is cheaper and easier to install.

Rick I
Toronto in summer, Bahamas in winter.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Vasco is offline  
Quote Quick Reply Share with Facebook
post #7 of 8 Old 08-11-2010
the pointy end is the bow
 
erps's Avatar
 
Join Date: Aug 2006
Location: La Conner, Washington
Posts: 6,260
Thanks: 2
Thanked 27 Times in 26 Posts
Rep Power: 10
   
We had an A/B Cold Machine in the previous boat and I installed one in our current boat after a massive failure with the Grunert system. We were averaging 40 to 50 amps a day with it. It would also allow you to use it over weekends without the extra support of alternate energy sources if you size your battery bank accordingly. Google Kohlhmann refrigeration (sp?) and you'll get a hit on a website with a good FAQ on boat refrigeration.

Ray
S.V. Nikko
1983 Fraser 41
La Conner, WA


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Boating for over 25 years, some of them successfully.
erps is offline  
Quote Quick Reply Share with Facebook
post #8 of 8 Old 08-13-2010 Thread Starter
Member
 
Dcneuro's Avatar
 
Join Date: Nov 2006
Location: Long Branch, NJ
Posts: 94
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
Thanks to all for responding. I have decided against the engine driven system, not only from reading these posts, but also, the engine driven system is like three times the cost of the 12v system. This makes the decision easy!

Dr. S.
Dcneuro 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



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