|
|
re: source for sunfrost refrigerator?
7 jan 1998
jerry chase wrote:
>dkulha@vom.com (don kulha) wrote:
>>...had cu given the box the 4-5 days it takes to cool down properly
>>their power consumption figures would have been vastly different.
that sounds like a long time...
>you are saying that the unit has to run for 4 or 5 days to give the
>mass inside the insulation time to cool down?
are sunfrosts made with a deliberately large thermal mass inside the
insulation? that would help keep food cold through power failures...
they do have some thermal mass attached to the external cooling coils,
as i recall, so they can work full time as the compressor works part
time, like 1930s refrigerators. more internal thermal mass would tend
to defeat that aim.
>what happens when you put a large warm pot of soup or something of
>that size in the unit? does the compressor pump the heat away
>quickly, or do other foodstuffs get warm, then cool down again?
this may be one time it pays to keep the fridge full. a 12 quart pot full
of 140 f soup needs to lose about 2400 btu to cool to 40 f. that might
come from temporarily melting 17 pounds of ice or raising the temperature
of 10 cubic feet of food with 50% moisture 7 degrees f, or putting the
soup pot in a sink full of cold water for a half hour.
nick
|
|
