Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 28-08-2011, 19:52   #16
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,150
Re: Is a Fridge Colder on AC or DC ?

Agreed, refrigerators are as cold as where you set the thermostat.

Are you meaning to ask if AC or DC motors are more efficient or if AC or DC power is more efficient?
__________________

__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 28-08-2011, 20:02   #17
Registered User
 
Jentine's Avatar

Join Date: May 2004
Location: Cruising on the hook
Boat: Beneteau 393, "Blackthorn"
Posts: 744
Images: 5
Re: Is a Fridge Colder on AC or DC ?

I have a Waeco portable refrigerator/freezer and it is considerably colder on AC than on DC. The normal setting when used on DC is 4. When plugged directly into AC it freezes the contents. The temperature drop has been measured at 38 degrees F on DC and 32 degrees on AC. The thermostat setting has nothing to do with the power change.
__________________

__________________
Jim

We are what we repeatedly do.
Excellence, therefore, is not an act but a habit."
--Aristotle
Jentine is offline   Reply With Quote
Old 13-09-2011, 16:42   #18
Senior Cruiser
 
44'cruisingcat's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Posts: 7,454
Images: 69
Re: Is a Fridge Colder on AC or DC ?

Quote:
Originally Posted by Jentine View Post
I have a Waeco portable refrigerator/freezer and it is considerably colder on AC than on DC. The normal setting when used on DC is 4. When plugged directly into AC it freezes the contents. The temperature drop has been measured at 38 degrees F on DC and 32 degrees on AC. The thermostat setting has nothing to do with the power change.
Strange. I have an old Engel which works exactly the same on either AC or DC. In fact I believe that it has a transformer/rectifier built in, so in reality it is always running on DC regardless of where it's plugged in.
__________________
44'cruisingcat is offline   Reply With Quote
Old 13-09-2011, 17:25   #19
Registered User
 
familycruisers's Avatar

Join Date: Aug 2011
Location: On the boat
Boat: Westerly Centaur. 26'
Posts: 500
Send a message via Skype™ to familycruisers
Re: Is a Fridge Colder on AC or DC ?

Other way around, but precisely.
__________________

__________________
familycruisers is offline   Reply With Quote
Reply

Tags
refrigerator

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
DC Generator - The Smart Way to Go typhoon Electrical: Batteries, Generators & Solar 96 22-03-2014 09:50
Save the Anchorage In Washington, DC ANCHOR DC Cruising News & Events 129 01-08-2012 09:00
Separate Fridge and Freezer - Thoughts ? SV Demeter Plumbing Systems and Fixtures 22 14-07-2012 05:31
Wiring Small Inverter into AC Panel janders Electrical: Batteries, Generators & Solar 3 25-07-2011 17:42



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 22:27.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.