Fred - I too have a thermostatic controlled spillover fan, but that's a
different animal.
I have two of those circulation fans in pipes -- one in the fridge, one
in the freezer. It moves air around inside each box, pulling the cold
air from the bottom and shoving it out the top. It helps to keep the
entire box at a constant temperature. When my fan failed, I noticed
that the compressor was cycling much more often because the thermostat
was just sensing the temp in one spot. By circulating the air, the
compressor doesn't turn on until the entire box is warm, and doesn't
turn off until the entire box is cold. The compressor cycles less
often. I understand that the biggest power drain for a compressor is
when it turns on, and it's more efficient to run a compressor at low
RPMs for a long time, rather than at high RPMs and cycling constantly.
Speaking of which, another big power saver for me is the 'Smart Speed
Controller' that works with most Danfoss compressors. It automatically
adjusts compressor speed for maximum efficiency. Most of the time my
compressor runs at 2000 rpm (slowly) but if I load up the freezer with
unfrozen meats, or when the summer sun is blasting down on that side of
the hull, it will speed the compressor up. Again, it's more efficient
to run the compressor at slow speed for longer times than it is to cycle
it constantly at higher speeds.
See: <http://www.coastalcoolaids.com/allproducts/speedcontrollers.html>
Wal
Fred Hazzard wrote:
Wally:
Please write a little more about what I could gain by having a fan. I have
a thermostatically controlled set of louvered doors between the refer and
freezer. <snip>
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