Saturday, February 12, 2011

Temperature samples sunny spring day

12 Feb '11: Although the weather forecast said cloudy, we had the pleasant surprise of a bit of sun on Saturday morning. I took pictures of the thermostat and recorded the sun and temperature patterns from our weather station on the roof.
  • External air temperature 10º
  • PV panel surface temperature 19º
  • Air temp in Surya Sunbox 30.0º
  • Pumping glycol into borehole at 15.3º
We hope to see more days like this as the Spring continues.
An hour after that photo was taken, outdoor temp was the same, but the sunbox temp was over 35º and pumping glycol down at 19º!

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