Wrenches,
Solyndra claims that their tube collectors "perform optimally when mounted
horizontally and packed closely together, thereby covering significantly
more of the available roof area and producing more electricity per rooftop
on an annual basis than a conventional panel installation." See
http://www.solyndra.com/Products/Greater-Rooftop-Coverage
It is my understanding that a solar thermal or PV tube or flat plate
collector's performance is based on the angle of incidence and that curved
collector performance decreases as the angle of incidence moves away from
perpendicular.
Does anyone have any field experience with solar thermal evacuated tube
collectors or Solyndra PV to show that tubes perform better than flat plate
collectors?
Joel Davidson
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