Do electric fridges need vents to the outside? - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-24-2020, 03:33 PM   #1
Junior Member
 
Name: Sigurd
Trailer: Lander Graziella 340 Bora
MOS
Posts: 16
Do electric fridges need vents to the outside?

Hi everybody,

I have an old Electrolux gas/12v/230v fridge that I'm thinking about using only as a 230v fridge.

Since I hate all holes and filled up the old vent holes, since I'm relocating the fridge, I was wondering how important it is to have a vent to the outside if I'm only planning to use it as an electric fridge?

I live in Iceland so if the vent is mainly about getting leading heat to the outside, then that's probably not going to be a problem here since, well, it's cold as hell and I wouldn't mind it heating up the caravan.
__________________

sigurd is offline   Reply With Quote
Old 07-24-2020, 03:53 PM   #2
Senior Member
 
Name: Gordon
Trailer: 2015 Scamp (16 Std Layout 4) with '15 Toyota Sienna LE Tug
North Carolina
Posts: 4,168
As long as you can vent the heat so that it does not build up I see no reason you could not vent it into the camper as well as outside. Its just an electric heating element, in some ways similar to the "heat strip" added to roof air conditioners. But of course if the fridge is only vented into the trailer and it were then used on gas, then it could very well be deadly. The gas option would have to be safely and completely disabled.

The above is layman opinion only and not meant to be advice or suggestion. I take no responsibility for any modifications that you do.
__________________

gordon2 is online now   Reply With Quote
Old 07-24-2020, 05:27 PM   #3
Senior Member
 
Kenny Strong's Avatar
 
Name: kenny
Trailer: Bigfoot 13'
Utah
Posts: 341
the hot air ought to be removed from around the frig.
Kenny Strong is offline   Reply With Quote
Old 07-24-2020, 05:54 PM   #4
Senior Member
 
Name: Gordon
Trailer: 2015 Scamp (16 Std Layout 4) with '15 Toyota Sienna LE Tug
North Carolina
Posts: 4,168
Quote:
Originally Posted by Kenny Strong View Post
the hot air ought to be removed from around the frig.
Yes of course.. but the question was does it need to be vented to outside for safety (like exhaust gases) or can it be vented to the cabin.
gordon2 is online now   Reply With Quote
Old 07-24-2020, 06:44 PM   #5
Senior Member
 
Raspy's Avatar
 
Name: John
Trailer: Black Series HQ19
Smith Valley, Nevada
Posts: 2,130
The fridge only needs to vent combustion exhaust gasses outside, not heat. So while running on electric, and especially if you want the heat, vent it inside. Don't even hook propane up to it.
__________________
I only exaggerate enough to compensate for being taken with a grain of salt.
Raspy is offline   Reply With Quote
Old 07-25-2020, 01:47 AM   #6
Senior Member
 
Name: Elliott
Trailer: Bigfoot
Everywhere
Posts: 258
Venting the heat inside is OK in terms of safety, but you'll want to make sure that it actually does get vented. It'll be a decent amount, 200-400W or so depending, and it's fairly important that the heat be removed from the condenser coils. You might have to add a couple 12V fans to circulate enough air.
Defenestrator is offline   Reply With Quote
Old 07-25-2020, 04:09 AM   #7
Raz
Senior Member
 
Raz's Avatar
 
Name: Raz
Trailer: Trillium 2010
Vermont
Posts: 4,715
Most RV manufacturers seem to be installing compressor fridges because they are easy to install. And most seem to vent below the fridge if they vent at all. Since heat rises, venting out the bottom is probably as useless as no vent. Too much heat will result in inefficient fridge operation and premature failure of any electronics. If it were me, I would forget the absorbtion fridge in favor of a compressor type dorm fridge and vent to the outside or out the top inside. There fridges can be found used very cheap (< $100) and will work much better. I would vent outside since that will give best performance. Adding hot air into an already hot trailer is not something I want to do.
Raz is offline   Reply With Quote
Old 07-25-2020, 04:37 AM   #8
Junior Member
 
Name: DAN
Trailer: CASITA SPIRIT
California
Posts: 13
Basic Refridgeration...
All refrigerators reject more heat to the space than they create in cooling.
All refrigerators need ventilation to operate.
In most trailer situations you want to ventilate the refrigerator to the Outside.
Even compressor driven refrigerators require ventilation in tight quarters.
CHICO DAN is offline   Reply With Quote
Old 07-25-2020, 09:59 AM   #9
Junior Member
 
Name: Mark Bradley
Trailer: 1976 Boler B-1300 1980 Bigfoot B-17
Manitoba
Posts: 10
I second Chico Dan's reply.
Mark Bradley is offline   Reply With Quote
Old 07-25-2020, 11:20 AM   #10
Senior Member
 
CarlD's Avatar
 
Name: Carl
Trailer: LiL Hauley
Syracuse, NY
Posts: 367
One more thought. I have an electric only fridge vented to the inside. My fridge only dissipates 40 watts when it is running, your fridge will probably be considerably more. On warm days, and nights, I wish my fridge were vented to the outside. Since you are in essence creating a new installation, I suggest you look at some way you could install a mechanism you could adjust so the fridge can vent inside or outside.
__________________
Your heirs will inherit money and stuff when you are gone. You can only save or spend money, but you can do things with stuff, so they are going to inherit stuff!
CarlD is offline   Reply With Quote
Old 07-25-2020, 01:43 PM   #11
Senior Member
 
Name: Gordon
Trailer: 2015 Scamp (16 Std Layout 4) with '15 Toyota Sienna LE Tug
North Carolina
Posts: 4,168
Quote:
Originally Posted by Mark Bradley View Post
I second Chico Dan's reply.
The question was not IF venting is needed... the question was, can the venting be to the interior of the living space.

While OP did say that he would not mind the added heat to the living quarters, I also like having an option to vent to outside... but according to one source, the outside temperature average (in Reykjavk) in summer is +10C (50F) but the highs go up to 25C (77F). So I guess if the heat were always added to the living quarters it would not be a problem. What a different environment from mine! I wonder how often a fridge is even needed at all.
gordon2 is online now   Reply With Quote
Old 07-25-2020, 01:45 PM   #12
Senior Member
 
Jon Vermilye's Avatar
 
Name: Jon
Trailer: 2017 Escape 21
Oswego, NY
Posts: 2,035
Registry
Quote:
Originally Posted by CarlD View Post
One more thought. I have an electric only fridge vented to the inside. My fridge only dissipates 40 watts when it is running, your fridge will probably be considerably more. On warm days, and nights, I wish my fridge were vented to the outside. Since you are in essence creating a new installation, I suggest you look at some way you could install a mechanism you could adjust so the fridge can vent inside or outside.
2X.

Starting from scratch, I'd look a an upper outside vent with a baffle that could be flipped to an inside opening.
Jon Vermilye is online now   Reply With Quote
Old 07-25-2020, 01:56 PM   #13
Junior Member
 
Name: Arthur
Trailer: Between RV's But Shopping
Mississippi
Posts: 27
Personal Feeling ...

.


Since there are gases in the refrigeration system
even without propane, I would still vent to the
outside in case of a leak.


Just personal preference for safety.




.
Arthur II is offline   Reply With Quote
Old 07-26-2020, 08:15 AM   #14
Junior Member
 
Name: DAN
Trailer: CASITA SPIRIT
California
Posts: 13
A bee in everybodies bonnet !
I understand the move of modern RV manufacturers to 12V Compressor driven refrigeration. Just recently 12
CHICO DAN is offline   Reply With Quote
Old 07-26-2020, 08:30 AM   #15
Junior Member
 
Name: DAN
Trailer: CASITA SPIRIT
California
Posts: 13
A bee in everybodies bonnet !
I understand the move of modern RV manufacturers to 12V Compressor driven refrigeration with the improvements in efficient variable speed and motor technology.
Absorbtion cooling with propane is reliable good choice for boondocking.
Absorbtion cooling with a 12V heating coil just makes no sense to me.
Our RV battery systems do not have adequate storage for an almost constant 5amp draw from a resistance heater ?
Maybe as you are traveling in your vehicle....
Then you Stop for a dayhike....The alternator Stops charging...Your fridge runs on the House battery AND your vehicle Start battery....Runs them BOTH down..and you are STUCK !
CHICO DAN is offline   Reply With Quote
Old 07-26-2020, 08:41 AM   #16
Senior Member
 
Name: JD
Trailer: Scamp 16 Modified (BIGLY)
Florida
Posts: 1,899
Vent the electric compressor fridge to the inside of the camper. There will not be a problem in the warm weather as you will either run the A/C or vent with the windows open and the vent on the roof (maybe with a fan).
The added heat from the fridge will be insignificant.
Every vent to the outside creates another place for leaks and bug ingress.
All I have ever had in my Scamp has been electric compressor refrigerators and it has never been a problem with the added heat, Of course we generally are hooked up and we have solar power for off grid.
redbarron55 is online now   Reply With Quote
Old 07-26-2020, 08:54 AM   #17
Senior Member
 
Name: Gordon
Trailer: 2015 Scamp (16 Std Layout 4) with '15 Toyota Sienna LE Tug
North Carolina
Posts: 4,168
Quote:
Originally Posted by sigurd View Post
...
I have an old Electrolux gas/12v/230v fridge that I'm thinking about using only as a 230v fridge.
....
Quote:
Originally Posted by redbarron55 View Post
Vent the electric compressor fridge to the inside of the camper. ...
OP said that he has a fridge that runs on gas so it must be an absorption type and NOT a compressor type. If one has a electric compressor type then that is a totally different situation. A compressor fridge needs to have airflow around the unit but the issue of venting inside vs outside is moot.
gordon2 is online now   Reply With Quote
Old 08-01-2020, 11:43 AM   #18
Senior Member
 
Trailer: 2011 KZ Sportsmen 242SB / 2004 Ram-Cummins 2500 2wd
British Columbia
Posts: 136
A few years back, we obtained (for our late grandson) an 'Alaskan' 10 foot camper (pump-up), that came stock with a 'Dometic' 3-way 'Cube' fridge. The fridge had an outside 'Intake' vent (uncovered when camper raised), but the 'Exhaust' vent was through the cabinet top (in front of the opening portion of the side window). We never operated the fridge on gas (all lines removed). It did work on shore power though, and heat build-up wasn't a terrible problem, if the window and roof vent were open. Note: It's 10:30AM, and current temp is 32C (90F)
Lloyd (aka Santa) Coltman is offline   Reply With Quote
Old 08-01-2020, 12:44 PM   #19
Junior Member
 
Name: DAN
Trailer: CASITA SPIRIT
California
Posts: 13
Refrigerator Vent Fan

My last RV had a Dometic 2way fridge with side inlet and roof exhaust.
The fridge would fail to above 40F inside as the outside temp in the Desert went above 90F.
OK for beer..bad for food spoilage.
The Casita Spirit has exterior wall the bottom side inlet and top side outlet.
I saw a real potential problem with adequate ventilation. And...Dometic recommends the installation of a vent fan in the back coil section.
The fan has an On/Off and limit switch which turns the fan On above 95F.
Works great and does the fridge ventilation job.
As I camp in the AZ desert for 6 months out of the year I was not looking forward to another fridge failure.
You can view the installation pics in my Casita Profects Post in the Modification Forum.
CHICO DAN is offline   Reply With Quote
Old 08-01-2020, 01:20 PM   #20
Senior Member
 
Civilguy's Avatar
 
Name: Mike
Trailer: Escape 21 & Jeep GC 5.7 (Previous 2012 Casita FD17 & 2010 Audi Q5)
Puget Sound, WA
Posts: 1,431
Registry
Quote:
Originally Posted by sigurd View Post
Hi everybody,

I have an old Electrolux gas/12v/230v fridge that I'm thinking about using only as a 230v fridge.

Since I hate all holes and filled up the old vent holes, since I'm relocating the fridge, I was wondering how important it is to have a vent to the outside if I'm only planning to use it as an electric fridge?

I live in Iceland so if the vent is mainly about getting leading heat to the outside, then that's probably not going to be a problem here since, well, it's cold as hell and I wouldn't mind it heating up the caravan.
I read your first thread; what a project!

First, absorption refrigerators typically have ammonia in them. You will need to look into the Electrolux to see what they use. You don't want to be in a confined space if ammonia ever leaks.

https://www.health.ny.gov/environmen...monia_tech.htm


Secondly, I found the lineage of the absorption process interesting as Electrolux apparently spun off Dometic.

Quote:
Commercial production began in 1923 by the newly formed company AB Arctic, which was bought by Electrolux in 1925. In the 1960s, absorption refrigeration saw a renaissance due to the substantial demand for refrigerators for caravans (travel trailers). AB Electrolux established a subsidiary in the United States, named Dometic Sales Corporation. The company marketed refrigerators for recreational vehicles (RVs) under the Dometic brand. In 2001, Electrolux sold most of its leisure products line to the venture-capital company EQT which created Dometic as a stand-alone company.
https://en.wikipedia.org/wiki/Absorption_refrigerator

Third, the absorption process requires adding heat in specific locations and, and then removing it from other locations in order to not defeat the intent of refrigeration; refer to the thermal image in the Wiki link above.

Casita's have notoriously poor installations which do not conform to the manufacturer's requirements and fail to properly baffle the airflow; this is why they often don't refrigerate properly. Casita then promotes the use of fans to compensate for their poor installations.

You might want to try mocking up your intended approach to see how it works.
__________________

__________________
~ Sometimes twenty years of experience turns out to be just one year of experience repeated twenty times. ~

Civilguy is offline   Reply With Quote
Reply

Tags
fridge


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
TRILL OUTSIDE METAL VENTS georgia g Problem Solving | Owners Helping Owners 2 03-04-2009 10:12 AM
12-volt marine fridges with the Danfoss compressor Loren G. Hedahl General Chat 13 04-05-2008 05:27 PM
propane fridges Michel pouliot Care and Feeding of Molded Fiberglass Trailers 27 07-25-2007 10:26 AM
Old fridges Peggy Care and Feeding of Molded Fiberglass Trailers 25 07-03-2007 11:13 PM
norcold fridges FYI General Chat 0 01-01-1970 12:00 AM

» Upcoming Events
No events scheduled in
the next 465 days.
» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 08:09 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
×