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Old 08-03-2016, 08:35 AM   #1
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Refrigerator efficiency

This is a new approach. I assume this is to improve the refrigerator efficiency? Maybe dust protection? I originally thought it was for the pilot light, but it's in full hookups so I assume it is on electric.
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Old 08-03-2016, 08:42 AM   #2
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FWIW I have seen a lot of strange things in life. Some still made sense after I learned what they were about. Maybe this one will. ;-)
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Old 08-03-2016, 09:04 AM   #3
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FWIW I have seen a lot of strange things in life. Some still made sense after I learned what they were about. Maybe this one will. ;-)
I've often seen something like this shading the refidgerator intake grill on RVs boondocinking on BLM land in the southwest.
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Old 08-03-2016, 10:15 AM   #4
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Just curious. Are they trying to block sun or wind?
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Old 08-03-2016, 10:43 AM   #5
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Just curious. Are they trying to block sun or wind?
I assume sun, (only because I've never seen them used on a RV when the fridge side is facing north).

BTW I've been using a fin fan like this in my Norcold 682 since 2012.
(It makes the fridge cool better...and helps prevent frost build up on the fins).


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Old 08-03-2016, 12:34 PM   #6
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I have installed the same kind of fan as Mel S except mine has (4) mini fans so that there is less build up on the outside ends of the fins..... notice the frosting in the far left and right of his picture above... I can't agree more with Mel... wow what a difference this little fan makes... easily a 10* drop of in box temperature...
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Old 08-03-2016, 01:53 PM   #7
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Vent the hot air
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Old 08-04-2016, 05:56 AM   #8
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Vent the hot air
dwhit
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What, (and why), is that thing on your upper refrigerator vent?
Wondering
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Old 08-04-2016, 10:06 AM   #9
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It is all about temperature difference between intake and exhaust vents. Greater differential means higher air velocity. When boondocking no need to run a 12 volt fan. And that is partly due to poor venting in a slide out.
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Old 08-04-2016, 10:14 AM   #10
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It is all about temperature difference between intake and exhaust vents. Greater differential means higher air velocity. When boondocking no need to run a 12 volt fan. And that is partly due to poor venting in a slide out.
Now that makes sense.

Luckily my 10 year old Dometic RM2652 still gets 10 below in the freezer and 34 in the frig without any add-ons.
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Old 08-04-2016, 10:18 AM   #11
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dwhit
??



What, (and why), is that thing on your upper refrigerator vent?
Wondering
Three pancake cooling fans under a floor vent deflector. Nice work. I bought a gang of four to mount internally in our DSDP but traded the rig off before I got around to it.
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Old 08-04-2016, 08:23 PM   #12
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???? on those awnings, etc.

I recently changed to a new refrigerator, and I was surprised to see how hot it gets in a kitchen slide above the fridge--really hot. My fifth wheel manufacturer didn't place emphasis on proper venting of the hot air.

Since I had the fridge removed, I went ahead and rebuilt the chimney woodwork that goes from the top of the fridge out to the top vent at a 45 degree angle approximately. I also added additional insulation on top of my fridge to keep the hot air out of the fridge cavity.

So far, my fridge temps have been just great. Someone that's having cooling problems could also add a $80 universal secondary exhaust fan above the OEM fan for additional heat and air removal.
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Old 08-05-2016, 06:41 AM   #13
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Three pancake cooling fans under a floor vent deflector.
I assume the same
But why on the outside of the grill?
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Old 08-06-2016, 02:23 PM   #14
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I cut a large opening in the oem vent to fit the fans. They're medium RPM...can't hear them run. No thermostat...they run alla time I'm on pedestal. Vents down so no rain gets in while camped nor travel. System works good. I get 32 degrees on my top shelf on medium setting gas or 110vac. I modify every ammonia fridge I've had using fans. If I was a patient man I'd do the physical work to make the designed draft air flow work properly...but I'm not a patient man. This fridge is in a slide-out. The two factory 12vdc fans still exist...they're on a thermostat. I've never heard 'em run although I shorted the relay and found they're noisy.

I had a class A before. I copied Dr. Film's idea and installed two hi-speed fans in the chimney. Worked fabulously.

I had a van-camper long time ago. I installed one 12vdc fan on a switch. For the first time I made ice in the little fridge.
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