Thursday, May 2, 2013

Energy usage


MexicolderTM

TROPICAL YACHT REFRIGERATION

mexicolder@hotmail.com

Mexicolder Usage Aboard CEILIDH

Measurements
Local
time On Off % on
2100 167 283 37% Thermostat set at 4-3/4
Freezer temperature 23-24 °F
Main box temperature 35 - 38
degrees °F
Vegetable box temperature 55 +/- °F
s/v ceilidh, Catalina 42, April 2004
166 285 37%
0700 149 356 30%
151 362 29%
1115 177 341 34%
175 338 34%
1630 186 285 39%
196 302 39%
2015 184 320 37%
185 332 36%
0820 170 369 32%
168 375 31%
1300 207 326 39%
1800 210 309 40%
2030 195 336 37%
0815 189 379 33%
0730 204 487 30%
Average 181 340 35%
Mexicolder
averaged daily load
40.0 Amp-hr / day
(4.8 amp draw 35% of the time)
 Original Alder-Barbour
averaged daily load
70 Amp-hr / day
(6.0+ amp draw 50% of the time)
Measurement Notes: Box insulation improved to Mexicolder standards, freezer box 2-1/2
size. Ambient daily temperature cycle 70-88 degrees F. Hull side of box in sun from sunrise
to noon. Evaporator (freezer) box and main box kept 1/2 to 3/4 full. Measurements in
seconds & made with stopwatch over several days. System includes 2-inch PVC tubing runs
with a circulation fan to a forward, larger, unimproved box used as vegetable cooler.
Original Alder-Barbour Notes: Old system started up at 7.0 amps for a few minutes then
came down to around 6.1 amps for duration of cycle. Original Catalina box insulation. 65-75
Amp-hr/day agrees with daily observations on a Link 1000 battery monitoring system made
in SF Bay California during summer and cruising Mexico in winter. System 5 years old and
checked to specs in SF Bay by licensed technician before leaving for Mexico. Compressor
seized in Zihuatenajo in December 2003.

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