Possible AC/DC Fridge Replacement Fit - Page 2 - Escape Trailer Owners Community

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Old 07-19-2014, 05:08 PM   #11
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Yes, very similar to units I had, 2 side vents using 2" round vents, some have a small fan back there to move air. I do not believe o/s venting is needed with these.
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Old 07-19-2014, 05:32 PM   #12
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Yes, very similar to units I had, 2 side vents using 2" round vents, some have a small fan back there to move air. I do not believe o/s venting is needed with these.
Yeah I think that's right. As long as there is a lower intake and an upper exhaust of some kind, it could vent to the interior. Some of the smaller models are "self venting", i.e., they have their own enclosure for the ventilation built in to the fridge chassis.

The challenges I see, since I've been 'volunteered' to be a pioneer, are
1) getting ETI to agree to customize the cutout and install it
2) getting one to ETI
3) having enough solar to make it practical when there is no hookup

I have no doubt that if the above issues are worked out, these compressor fridges will blow away the absorption type in terms of performance - especially here in the heat of Texas.
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Old 07-19-2014, 05:39 PM   #13
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You know, a really enterprising person could go ahead and buy the fridge, two large 6-volt batteries like ETI installs, and a couple of portable solar panels and try this thing out before committing to modifying a new Escape in production. Just sayin'.......
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Old 07-19-2014, 05:44 PM   #14
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You know, a really enterprising person could go ahead and buy the fridge, two large 6-volt batteries like ETI installs, and a couple of portable solar panels and try this thing out before committing to modifying a new Escape in production. Just sayin'.......
Interesting. That same enterprising person could then haul the batts, panels and fridge to ETI when they drive up there for delivery, and have the even more enterprising folks there install them. That enterprising person better have a big truck to haul all that crap! Just sayin'....
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Old 07-19-2014, 05:53 PM   #15
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Maybe we just need some customer success stories from NovaKool showing and describing successful installations. Then we would know real life battery/solar system combinations that would work if we ever wanted to take the plunge...I contacted them and asked for this info. Maybe they will jump on this thread to answer questions.
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Old 07-19-2014, 06:02 PM   #16
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Just remember they are a little noisy, but being able to cool on a very hot day as well as operate while in transit are on the plus side. I would imagine the new ETI solar set up with dual sixes should handle the smaller unit.
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Old 07-19-2014, 08:10 PM   #17
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If the exterior vents are used there must be some way to seal the exterior side from the interior side for the sake of heating and cooling the trailer. Absorption refrigerator cabinets are designed to seal against the rear opening in the cabinet, but a compressor-based unit would not be.

If a compressor-based refrigerator is planned from before the trailer is built, it would be easy for ETI to just not cut the exterior vent openings, which would give a cleaner-looking exterior with two fewer areas to let water into the interior cabinetry.
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Old 07-19-2014, 09:14 PM   #18
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If the exterior vents are used there must be some way to seal the exterior side from the interior side for the sake of heating and cooling the trailer. Absorption refrigerator cabinets are designed to seal against the rear opening in the cabinet, but a compressor-based unit would not be.

If a compressor-based refrigerator is planned from before the trailer is built, it would be easy for ETI to just not cut the exterior vent openings, which would give a cleaner-looking exterior with two fewer areas to let water into the interior cabinetry.
Yeah, that's what I was thinking after Jim's comments. A cleaner look and fewer holes in the shell -- I'm all for that. Also, the fridge would probably not require as deep of a cabinet. If the cabinet were purpose built for the compressor fridge, it might give you a few more inches of interior space and not stick out as far.
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Old 07-19-2014, 11:04 PM   #19
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Some Power Estimates -- Escape 17B/dual 6 Volt Batteries/Compressor Fridge

An example: The 12 Volt fridge I’m considering has a draw of 4.4 Amps. This only happens of course when the compressor is running, and it doesn’t have to run all the time – just enough to maintain the temperature. But, for the sake of this example, if the fridge compressor ran for an entire hour, it would consume 4.4 Amp Hours (Ah). I know it won’t run continuously. Depending on the ambient temperature, and how many times I open and close the fridge, it might run on average about 40% of the time. So, again just for the example, I’ll say it has a 40% duty cycle. That means in one hour the fridge will use 1.76 Ah. In a 24 hour period, that means the fridge will use 42.24 Ah.

The dual 6 Volt batteries offered by Escape can provide an estimated 232 Ah of 12 Volt power. That means, theoretically, that if I were using them to provide power ONLY to the fridge and nothing else, and not recharging them by hooking up or by using solar, I could run the fridge for about 5 and a half DAYS. That’s not bad. But, I know that the fridge isn't the only thing I’ll be running off the batteries when I boondock. There are the lights and any other electrical accessory I might plug in, and any AC items I might be using if I have an inverter. Also, the inverter has an amperage draw that differs depending on how much wattage I am using. So, just for the example, let’s say that everything else besides the fridge uses about 40 Ah in the same 24 hour period. That means I could theoretically run the fridge and every other electrical item in the trailer for almost 3 days.

But, I haven’t taken into account that I will be charging the batteries, or at least offsetting their power drain, with solar panels. When I add that in, depending on how much power the solar system generates, I could boondock for an extended period of time with a regular compressor DC fridge.

Or am I missing something?
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Old 07-19-2014, 11:43 PM   #20
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Batteries should not be discharged below 50% - so you need to figure 116 amp-hours.
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