Barra Box Results

 

Some plots from the loggers for the period when we were traveling -- 12/20/2009 through 1/1/2010

 

Sensors:

 

Sun sensor -- mounted perpendicular to glazing and half way up -- sees reflection from snow  -- watts/sq meter

 

Bottles Temp -- sensor taped to bottle in 2nd row (see earlier pics for placement)  -- F

 

Col Top Temp-- in outlet vent of collector -- F

 

Col In Temp -- in the inlet duct of the collector -- F

 

Rm Temp  -- temp in middle of the box about half way down from ceiling to floor -- F

 

Ambient Temp -- sensor mounted just off north side of box -- F

 

 

Room temperature averages a nice 75F on some days, but the 120F down to 30F range is a bit large for comfort :)

 

The full time period 12/20/09 through 01/01/10

 

 

Sunny day -- cloudy day -- sunny day

 

 

Two sunny days

 

 

Declining sun over 3 days