|
|
re: portable solar power
29 aug 2005
vaughn wrote:
>your refrigerator probably takes an average of about 200watts.
rather high, compared to the 4 watt mt. best chest fridge conversion.
us freezers at tested at 0 f in a 90 f room, a hot room, to make up for
no door openings during the test. the yellow doe energy guide label on
whirlpool's eh151 14.8 ft^3 $369 chest freezer says it uses 354 kwh/year
that way, so it might use 354(70-36)/(90-0) = 134 at 36 f, ie 0.37 kwh
per day, or an average of 15.3 watts. the a419abc-1c digital thermostat
from johnson controls ($62 as part number l38716 from jonestone supply,
with a remote thermistor) uses 1.8 va max and might turn on the freezer
when the box temp rises to 36 f.
if this is like frigidaire's ffc1524 48"x29.5"x35" high chest freezer,
with cold coils inside the left 29.5"x35" side and hot coils under the
skin of the 48"x35" back, we might add a foamboard partition parallel
to the left side to make a small freezer compartment and more foamboard
over the top and around the 3 cold sides and let the new stat turn on
a small fan to circulate air between the freezer and fridge compartments
when the fridge temp rises to 36 f. we might somehow store ice in the
freezer compartment and use it (vs batteries) to keep the fridge cold
overnight. each pound of ice could keep it cold for about 3 hours.
nick
|
|
