Marine Refrigeration Systems always 12 volts? - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 16 Old 01-24-2013 Thread Starter
Senior Member
 
Join Date: Sep 2011
Location: Massachusetts
Posts: 132
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 4
 
Marine Refrigeration Systems always 12 volts?

Looking to get some information on marine refrigeration systems... at the moment my boat does not have shore power or refrigeration. My original idea was to add shore power and add a 120V refrigeration system to my current ice box. After looking into systems available on defender among other sites it seems that they are all 12/24V systems. How are most systems set up, do they always draw power through batteries and the charger maintains them topped off? Or are their systems that use both AC and DC?

How does your system work, and what is the manufacturer.

If you could change something in your current setup what would it be?

Schock - New York 36
Portsmouth, RI
mm2187 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 16 Old 01-24-2013
Señor Member
 
PorFin's Avatar
 
Join Date: Sep 2007
Posts: 1,446
Thanks: 8
Thanked 20 Times in 20 Posts
Rep Power: 8
 
Re: Marine Refrigeration Systems always 12 volts?

The most common set up is a DC set up (either 12v or 24v.) Runs off the house battery bank. The benefits are that this can operate either at or away from the dock. It'll also operate under sail or when under power.

Another alternative is using an engine driven compressor, but it is less common and may not be the best alternative for a sailboat.

110v systems are also an alternative, and may or may not be an attractive alternative depending on how you use your boat. If you spend most of your time at the dock, and only go out for short day sails, it might be right. If you intend to do any cruising, then you may find it less of a deal.

We replaced our Adler Barbour ColdMachine a few years back with a Frigo-Boat Capri 35. It's been a good unit for us, and power consumption is reasonable.

I'd like to have more insulation around our box -- it's on the list for potential projects (although it's not near the top of the list.)


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
________
'85 BYB Vagabond 39
PorFin is offline  
Quote Quick Reply Share with Facebook
post #3 of 16 Old 01-24-2013
Senior Member
 
Join Date: Dec 2012
Posts: 844
Thanks: 2
Thanked 21 Times in 17 Posts
Rep Power: 3
 
Re: Marine Refrigeration Systems always 12 volts?

i have 2 adler/barbour 12v water cooled units for my boat that I'm going to replace (leaks) in the spring or summer of this year(20 yrs. old). Mine operates off the batteries which i keep charged via shore power or wind charger. Along with the compressor units and cold plates i have a water pump with a thru hull. It's a very standard set-up that they have used for the last 20 years.

I've been doing a lot of research as well. It looks pretty straight up to install or replace. The set up i have seems to be the standard for efficiency. They ain't cheap though! If i replace everything (separate fridge and freezer) i think my parts bill will be around 3.5k or more.
A lot of the suppliers actually give you step by step instructions to do the install. if you are fairly handy you should be able to do it.
I don't know the efficiency of keel cooled, air cooled and water cooled. I was told water cooled just make sense for the Caribbean. It makes sense to me.
benesailor is offline  
Quote Quick Reply Share with Facebook
post #4 of 16 Old 01-24-2013
me at 67!
 
deniseO30's Avatar
 
Join Date: Nov 2006
Location: Bristol pa
Posts: 6,970
Thanks: 55
Thanked 126 Times in 115 Posts
Rep Power: 10
   
Re: Marine Refrigeration Systems always 12 volts?

Most of Norcold units are 120 ac/24/12 Dc. but the 120 isn't really needed because yes most of the time they run off the battery bank which is being charged when at dock anyway.
Battery banks are the answer. More amp hours = longer run time on the refridge before recharge via engine, solar or shore power.

Denise, Bristol PA, Oday 30. On Tidal Delaware River, Anchor Yacht Club.
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.

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


My boat is sold!
deniseO30 is offline  
Quote Quick Reply Share with Facebook
post #5 of 16 Old 01-24-2013
Senior Member
 
SchockT's Avatar
 
Join Date: May 2012
Location: North Vancouver, BC
Posts: 1,440
Thanks: 1
Thanked 28 Times in 26 Posts
Rep Power: 4
 
Re: Marine Refrigeration Systems always 12 volts?

You can get AC/DC refrigeration systems from Norcold and Nova Kool, but if you have a built in battery charger for when you are on shore power you probably will be fine with a 12v unit. They draw very little power once they are down to temperature so even a small charger should be able to keep up.

1979 Santana 30 Tall Rig
Hull#101
SchockT is offline  
Quote Quick Reply Share with Facebook
post #6 of 16 Old 01-24-2013
Junior Member
 
Join Date: Jan 2012
Location: Morrison,IL
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: Marine Refrigeration Systems always 12 volts?

I installed a Frigoboat system in my boat. It is 12 volts but also has a small transformer on it that powers the refrigerator if it senses 110 volts. It is automatic and works great.
fousley is offline  
Quote Quick Reply Share with Facebook
post #7 of 16 Old 01-24-2013
Member
 
addict's Avatar
 
Join Date: Apr 2010
Location: Pitt Meadows
Posts: 45
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Send a message via MSN to addict
Marine Refrigeration Systems always 12 volts?

I did a nova kool kit last summer. Works great and very low power consumption.
addict is offline  
Quote Quick Reply Share with Facebook
post #8 of 16 Old 01-24-2013
Senior Member
 
Join Date: Dec 2012
Posts: 844
Thanks: 2
Thanked 21 Times in 17 Posts
Rep Power: 3
 
Re: Marine Refrigeration Systems always 12 volts?

addict,
how was the price on the nova kool? Can you break it down a little?
benesailor is offline  
Quote Quick Reply Share with Facebook
post #9 of 16 Old 01-24-2013
Senior Member
 
Familycruisers's Avatar
 
Join Date: Dec 2011
Posts: 137
Thanks: 4
Thanked 3 Times in 2 Posts
Rep Power: 4
 
Re: Marine Refrigeration Systems always 12 volts?

To answer your question , yes. Typically its either 12/24dc or engine driven.

S/V Never Land
Westerly Centaur
Familycruisers is offline  
Quote Quick Reply Share with Facebook
post #10 of 16 Old 01-25-2013
Sailor
 
Gladrags1's Avatar
 
Join Date: Apr 2003
Location: Rock Creek, Maryland
Posts: 673
Thanks: 10
Thanked 15 Times in 15 Posts
Rep Power: 13
 
Marine Refrigeration Systems always 12 volts?

I replaced my refrigeration last year with a new Adler-Barbour Cold Machine. While I was at it, I redesigned the ice box and put Reflectix space age bubble insulation on the walls for extra insulation. I did the project myself and felt it was very easy to do, particularly since I didn't have to drill holes in the box for the coolant lines since the holes were already there. The fridge units all come sealed with refrigerant loaded in both parts, install, connect together and you are done! All units, no matter what the manufacturer, use the Danfoss compressor which is industry standard. I would use the manufacturer's recommendation for size of box as you will find that an oversized unit for the box will be extremely inefficient because of the more frequent but shorter run cycles.

Tod

Mandolin
Bayfield 36
Sailing out of Rock Creek, Chesapeake Bay
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Gladrags1 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
Glacier Bay Refrigeration Systems voyagersail Gear & Maintenance 2 08-09-2011 05:31 AM
12 and 24 volts systems imsaint007 Electrical Systems 8 11-29-2008 06:40 PM

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