Posted by Graham Parkinson on October 14, 2004, 4:55 am
Hmm good points. On the other hand due to the larger area two plate
collectors can be made of something with much less thermal conductivity than
conventional fins and tubes.
As Gary says they might be good drainback units.
Posted by nicksanspam on October 14, 2004, 11:37 am
Sure, if the heat only needs to flow trough a thin layer, vs sideways.
Flat poly films come to mind. On top of PVs? With a reflector above.