Quote:
Originally Posted by ELGo
You are right with large numbers to focus on the exponents, but consider e.g. a rectangle that is elongated in height by 50%:
The surface area increases from
2xy + 2xh + 2yh to
2xy + 3xh + 3yh
While the volume increases from xyh to 1.5xyh.
Not that far off from linear in this range.
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If the size of the refrigerators was determined by a chainsaw, this would be correct, but smaller refrigerators tend to become narrower, and sometimes shallower, too.
Quote:
Originally Posted by ELGo
...By the way, what is the temperature gradient in your fridge from bottom to top ? I'm wondering if extra external insulation on the top of the fridge would have much of an effect.
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Yes, it would have a very significant effect.
My Freezerator, as most of the currently produced units, have the integral coils, and the outside surfaces become the heat radiating surface... the top, the two sides, and the back, all have integral coils. So to insulate would have a negative impact on efficiency.
Personally, I think that the integral coils feature costs the planet a huge amount of CO2. Only reason for it that I can imagine is that the coils are much less likely to be damaged during shipping. After shipping, it's down hill.
-AC