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Old 17-10-2012, 13:05   #1
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Hole size between freezer and refrigerator?

Freezer about 35 liter
Refrigerator about 100 liter
Evaporator in freezer

How big hole between these compartments?
Will 1-1.5 inch be good? Just spoke to one person and he told me 2 holes about 2.5 inch each
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Old 17-10-2012, 13:20   #2
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Re: Hole size between freezer and refrigerator?

Two holes of 2.5 inches each is what`s in my Adler Barbour set-up. One hole in the middle and the other lower.
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Old 19-10-2012, 07:17   #3
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Re: Hole size between freezer and refrigerator?

One high and one low is a good idea.
Make them adjustable with a cover that can regulate the air transfer.

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Old 23-10-2012, 14:56   #4
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Re: Hole size between freezer and refrigerator?

We recently built and commissioned a fridge and freezer on our boat, with just 1 cold plate, in the freezer. Ours is about 80 litres freezer and 160 litres fridge.

We put a 25mm insulation panel in between the fridge and freezer (glassed on both sides, coved into place. We put 2 holes between, and installed plugs (actually large dinghy bungs). We put a small computer type fan in the freezer that runs whent he compressor runs.

So far this seems to work well. If we find we aren't able to keep the fridge cool enough, we will put another hole and plug in.
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Old 23-10-2012, 14:59   #5
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Re: Hole size between freezer and refrigerator?

You could rig a small 12v spillover fan to a thermostat, in which case the hole should be the size of the fan. (These are sometimes called "muffin fans" in computer applications.)
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Old 23-10-2012, 15:34   #6
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Re: Hole size between freezer and refrigerator?

Probably depends on what the divider is made out of, but ours was 12 mil plywood and 2 holes at 2.5 inches worked well. Start with small holes and keep the drill handy.
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Old 23-10-2012, 15:40   #7
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Re: Hole size between freezer and refrigerator?

Quote:
Originally Posted by Bash View Post
You could rig a small 12v spillover fan to a thermostat, in which case the hole should be the size of the fan. (These are sometimes called "muffin fans" in computer applications.)
Mine is like that and both the fan and the "hole" are at abut 2/3 the way up the divider. The fan blows into the freezer aganist the evaporator and cold air comes into the frig from the freezer..

Have no problems with maintaining the frig side at 25-30 degrees in the middle with it colder in the bottom.
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