Refrigeration on 12v? Beneteau 331 - SailNet Community
 
LinkBack Thread Tools
post #1 of 7 Old 05-11-2007 Thread Starter
Junior Member
 
Join Date: May 2007
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Refrigeration on 12v? Beneteau 331

Almost an new owner of a 2002 Beneteau 331. Should be done next week with the purchase.

The boat has a built in refrgerator (Alder Barbour??) and I was wondering which might be a dumb question, but is it possible to run off 12v batteries or is the power drain just too much?

We are on a mooring and do not have shore power.

Thanks,
Craig
HelixOne is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 7 Old 05-11-2007
moderate?
 
camaraderie's Avatar
 
Join Date: May 2002
Location: East Coast
Posts: 13,877
Thanks: 0
Thanked 3 Times in 3 Posts
Rep Power: 16
     
Adler Barbours are designed to run off 12V...they typically use 5-6 amps when running but once the box is cooled, they only run about 1/2 the time in temperate climates. So YES you can run them off of batteries. I would figure 100 amp/hours the first day of use since you have to cool down the fridge and then about 60 amp/hours for each additional day.
The next thing to worry about is DO I HAVE A BIG ENOUGH battery bank?
Aside from your starting battery you will need about 300 A/h's of batteries to run the fridge for a weekend since you should only use 1/2 available amps before you recharge your batteries. This is equal to about 3 group 31 batteries or 2 4D types.
Then...you need to figure how you are going to charge those batteries since you will need to replace 160 amp/hours every 2 days. You'll need a marine battery charger and a generator (like a Honda) OR some combination of solar/wind generation to achieve this OR you will need a decent sized (80 amp or so) alternator on your diesel and a smart 3 stage regulator...not recommended due to the engine wear running at Idle causes...but still used by many.
Hope that helps...as you can see...it is a bit more complicated than just hooking up a battery...but the ice cubes are worth it!!
camaraderie is offline  
Quote Quick Reply Share with Facebook
post #3 of 7 Old 05-12-2007 Thread Starter
Junior Member
 
Join Date: May 2007
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Thanks for the reply. I am afraid unless I switch to a slip ice will remain in my future. I did always want to get the little Honda generator so that might be a solution.

Regards,
Craig
HelixOne is offline  
Quote Quick Reply Share with Facebook
post #4 of 7 Old 09-18-2007
Junior Member
 
Join Date: Mar 2006
Location: New Jersey
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
House battery

I use two 6v deep cycle golf cart batteries in series as my house battery. it gives me about 260 amps which powers my OC 381 at anchor for about 18 hours or so after which a half hour run on the engine tops them off for another 12 hours or so.
eragbag is offline  
Quote Quick Reply Share with Facebook
post #5 of 7 Old 09-18-2007
Senior Member
 
Join Date: Jul 2001
Posts: 1,174
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 14
 
eragbag
You might want to clarify as this implies you have something other than the stock alternator capable of replacing 50+ amps in 30 minutes.
k1vsk is offline  
Quote Quick Reply Share with Facebook
post #6 of 7 Old 09-20-2007
Junior Member
 
Join Date: Mar 2006
Location: New Jersey
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
The alternator is the standard which came with the boat. The fridge will usually run for about 18hrs or so before the low voltage cutoff turns it off. An engine run of 30+/- minutes usually gets it running for another 12 hours or so. Frankly, I don't understand the mechanics of it all.
eragbag is offline  
Quote Quick Reply Share with Facebook
post #7 of 7 Old 09-20-2007
Senior Member
 
Join Date: Jul 2001
Posts: 1,174
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 14
 
in 18 hours, one should use approx 5 amps/hr (for the refrig) with a 50% duty cycle or a total of 45-50 amps. Out of a 200amp bank, thats obviously 25% of capacity which should not reduce the voltage enough to cause the shut-off to activate. You either have bad batteries or a bad connection someplace.
Regardless, the stock alternator will only produce 15-25 amps+/- IF THAT in a half hour period; certainly insufficient to recharge the batteries to any degree resulting in constant under-charge (presuming you do this often) and causing the batteries a premature death.
k1vsk is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

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
Racing a Beneteau 331 johns64 Racing 7 05-03-2010 10:45 PM
Beneteau Attitude Suck for You? gtsusa Boat Review and Purchase Forum 8 09-20-2007 11:35 AM
Beneteau 331 or 361 joelcop Boat Review and Purchase Forum 5 02-17-2003 11:39 AM
Installing 12-Volt Refrigeration Sue & Larry Gear and Maintenance Articles 0 06-18-2002 08:00 PM
Beneteau 331 wannasail Boat Review and Purchase Forum 3 09-01-2001 06:23 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

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