Hoar Frost [RE-wrenches]

[Kent Osterberg]

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Shorting a PV array will not cause the modules to dissipate any 
additional heat and will not help prevent or remove hoar frost.  When PV 
panels are left open circuit they reach their maximum temperature. 
Operating at maximum output power the temperature drops 1 or 2 degrees 
Celsius because part of the incident energy striking the module (only 10 
to 15%) is being moved to the load.  Except for the small amount of 
energy dissipated in the wires (where it won't help the hoar frost 
situation), essentially no energy is being moved in short circuit 
condition, a shorted module will behave almost exactly the same as an 
open circuit module.

Just be patient and old Sol will take care of the hoar frost.

Kent Osterberg
Blue Mountain Solar


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