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Old 10-04-12, 12:38 PM   #1
ecomodded
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Join Date: Sep 2012
Location: Vancouver Island,Canada.
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Default Ecomodded Fridge saves $$ (added foam insulation)

I have insulated my fridge by wrapping it with 4 layers of wood flooring insulation/acoustic barrier,called SolidBlack underlayment - SolidBlack MD and 1 layer of the blue vapor barrier over top of it.

I made a 4 layer sheet of the SolidBlack to stick to the bottom of the fridge,one piece from the kick panel to the back vent area, both inside lower sides are covered as well.
I used 3m Super77 spray adhesive to bond the layers together then to the fridge.
I staggered the seams while wrapping layers over the fridge, each layer covered the previous layers seam.
I am making a vent off the back of the fridge that goes directly to a hall closet, no more basking the fridge in warm air. I am designing the vent on a upward angle so the warm fridge condenser/compressor air will naturally rise and flow into the hallway coat closet, which by design has no door.
As for the improvements noted so far they are as follows - The fridge was running for 35 min. every 1 1/2 hr, now it runs for 26 min. every 2hrs
with a 22*c inside temperature
Before run time 29%
After run time 18%

A 38% improvement


Something interesting is after i added the insulation the freezer temperature dropped from -18.2 to -23.7
I turned the fridge down from 1/2 to about 1/5th to maintain a -18 freezer and a 2*C fridge.

Once my vent system is completed i am going to conduct test on the efficiency improvements from using sealed empty containers compared to water filled.for the added PCM's
The PCM averages are in, 2 hrs 17m off time
26.6 minute on time
A 14% percent longer off duration with the PCM's / water jugs
note: room temperature was 2 degrees cooler during pcm tests.

A new same brand energy star model uses 383 kwh annually
my 2007 model has achieved 255.5 kwh annually,
33% less electricity


Watt meter results are in
0.7 kwh used in 24hr
7 cents a day
$25.91 a year @ 0.102 cents a kwh

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Last edited by ecomodded; 10-27-12 at 04:11 PM..
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