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Forum: Plumbing Systems and Fixtures 11-04-2015, 08:42
Replies: 46
Views: 7,424
Posted By accomplice
Re: A/C refrigeration

21Ah, while more than 8Ah, is still excellent performance. My best day is still 2.5x that in energy consumption. You must have a very well insulated box.
Forum: Plumbing Systems and Fixtures 10-04-2015, 12:25
Replies: 46
Views: 7,424
Posted By accomplice
Re: A/C refrigeration

Yes. If you're able to keep your box cool wtih 4A for 2 hours a day (= 8 Ahr/day), that is remarkably good performance -- better than most by a factor of 10.
Forum: Plumbing Systems and Fixtures 10-04-2015, 11:29
Replies: 46
Views: 7,424
Posted By accomplice
Re: A/C refrigeration

My plates are mounted at a near vertical. When I first turn on the system, as the plates cool, I measure very large temperature differentials from the top to the bottom. With ambient 80 degrees F,...
Forum: Plumbing Systems and Fixtures 10-04-2015, 09:41
Replies: 46
Views: 7,424
Posted By accomplice
Re: A/C refrigeration

Is that plate in the fridge or the freezer? That's about the size of the plate in my fridge. In my freezer I have two, slightly larger plates. In total, the plates *easily* take up 1.3cf. I...
Forum: Plumbing Systems and Fixtures 10-04-2015, 08:36
Replies: 46
Views: 7,424
Posted By accomplice
Re: A/C refrigeration

I was speaking to the use of a BD50 with a holding plate system. I don't use a BD50 now, but rather a (much larger) Masterflux Sierra running R404a that has about a 6kBTU/hr rate.

When...
Forum: Plumbing Systems and Fixtures 10-04-2015, 08:23
Replies: 46
Views: 7,424
Posted By accomplice
Re: A/C refrigeration

My measurements are taken both from real-life observations and datasheets. In my experience, the two correlate fairly well for a system that is running well. BTW, if you're running 2 x12V systems...
Forum: Plumbing Systems and Fixtures 10-04-2015, 06:03
Replies: 46
Views: 7,424
Posted By accomplice
Re: A/C refrigeration

Mine isn't usually the most popular advice on refrig., but I'll offer it anyways.

Once at temperature, there's going to be some regular heat loss due to finite insulation and occasional door...
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