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The appliance shown on the right was set up for testing. It was filled with water and monitored daily over the winter in Wisconsin USA.
Notes:
- The table below shows actual recorded temperatures.
- Although Lower Temperatures may have been achieved elsewhere either they have not been recorded or the author is not aware that such information exists.
| Temperature Measurements |
Date
Recorded |
Outside Ambient |
Wind Chill |
Inside Microsolar Tank |
| F |
C |
F |
C |
F |
C |
| 6 Jan 2004 |
-10 |
-23.3 |
-25 |
-31.7 |
60 to 70 |
15.5 to 21.1 |
| 7 Jan 2004 |
10 |
-12 |
-10 to -15 |
-23.3 to -26.1 |
|
|
| 28 Jan 2004 |
0 to -10 |
-17.8 to -23.3 |
No Wind |
80 |
26.7 |
| 2 Feb 2004 |
30 Overcast |
-1.1 |
No Wind |
110 |
43.3 |
Obviously there is no usable benefit to be gained from operating a solar hot water system under these conditions but it adequately demonstrates that the integrity of the unit remains sound, under extreme cold conditions.
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