Refrigeration Question - SailNet Community
 
LinkBack Thread Tools
post #1 of 4 Old 09-04-2013 Thread Starter
Junior member, rest old
 
msmith10's Avatar
 
Join Date: Feb 2009
Location: Columbus Ohio
Posts: 497
Thanks: 3
Thanked 0 Times in 0 Posts
Rep Power: 7
 
Refrigeration Question

OK, Donna and Schock, and any other refrig experts:
I need to replace a 20+ year old Adler Barbour Cold Machine. It has worked hard doing a pretty good job in a factory ice box, about 5-1/2 cu ft with only 1" of insulation.
I don't need all that refrig space and I can't access the outside of the box, so I added 2" foam on the inside-- bottom, top, and all sides. My new box is nice and tight. This should ease the work on the unit considerably. Of course, I cut my refrigerated space down quite a bit, also-- down to about 3 cu ft, but this is enough for me.
My question is, should I replace the no longer working Cold Machine with the same size unit, which is rated for 7+ cu ft, or install a smaller unit, rated at 3-4 cu ft?
Which is more efficient- to have a larger compressor/evaporator that doesn't have to work as hard, or a smaller unit that will draw fewer amps while cycling, but I assume will have to cycle longer?
Any other considerations in sizing?

Mark Smith
1977 C&C 30 Mk 1 hailing from Port Clinton, Ohio
msmith10 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 4 Old 09-05-2013
Glad I found Sailnet
 
Bene505's Avatar
 
Join Date: Jul 2008
Posts: 3,818
Thanks: 14
Thanked 51 Times in 50 Posts
Rep Power: 9
   
Re: Refrigeration Question

I'd call Seafrost and get a replacement Danfoss compressor, and the compression fittings to splice-in the new compressor after removing the old one.

Regards,
Brad

.
.
Great minds discuss ideas;
Average minds discuss events;
Small minds discuss people.
.
The best minds discuss sailing (and a little bit of politics). I don't know why. It's a mystery!
.
Bene505 is offline  
Quote Quick Reply Share with Facebook
post #3 of 4 Old 09-05-2013
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: Refrigeration Question

Is it still working? Refrigeration equipment doesn't work hard or harder or less in the sense most people think. It just runs longer or shorter cycles the energy draw is about the same. It was working fine all those years and you made the box smaller, I know why you did it. But it just seems like a bit over overkill with insulation. So save the $900+ if it's still working for now.

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 #4 of 4 Old 09-06-2013
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: Refrigeration Question

It's a hard call which would be more efficient. The smaller compressor may draw less but it will run longer. The larger unit will pull the box and it's contents down to temperature faster. The larger unit might short-cycle a bit but I don't think it would be a big issue on a small cap tube system like that. Perhaps the biggest consideration would be the size of the components. The larger unit will have a larger evaporator plate so you want to make sure it would fit in your newly downsized box. The condensing unit might also be bigger, although probably not by much.

If you want to make ice or hold ice cream you might want to go with the larger unit!

1979 Santana 30 Tall Rig
Hull#101
SchockT 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
refrigeration egregerson Ericson 5 02-28-2013 08:31 AM
Refrigeration Help SailingChance Electrical Systems 3 10-16-2012 10:16 AM
Refrigeration on a 34 johnharch Pacific Seacraft 9 02-01-2010 09:46 AM
Refrigeration recycle Gear & Maintenance 22 05-13-2008 10:09 PM
Another Refrigeration Question ianhlnd Gear & Maintenance 0 08-14-2007 11:22 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