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larry

wrote:
Uncle Monster wrote:

... The heat is just enough to trick the thermostat, not to warm the
refrigerator compartment.
How would that accomplish the goal?

The slight heat produced by the heater is enough to raise the temperature
around the thermostat to trick it into running the compressor for a longer
period of time. It's not necessary to increase the temperature of the whole
refrigerated box, just the temperature around the thermostat.

That doesn't make sense to me...

Nick

It's like the timer with a 10K resistor clipped under a
regular wall thermostat to do an over-night "setback".
Thermostat thinks it's getting warmer and turns off the
furnace when the room isn't warmer.

Frig controls are wacky these days, you chill the freezer,
themostat the coldbox, and use a fan and vent to regulate
the freezer temp.

If the differential is that small, why not use a few "frig"
chips (Peltier devices) to do the job in place of the
compressor? A single one sq inch chip will cool your six
pack in your 12v car cooler in the summer. Or an old Bernz
with the Ammonia absorption cooler. I have a 1950's
12v/110v portable that will still develop a 60 degree
differential and bust 2 six packs of soda in the basement
during the winter ;-)

-- larry / dallas