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Old 12-26-19, 11:00 PM   #5
gadget
Helper EcoRenovator
 
Join Date: Dec 2019
Location: Northern Utah
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Quote:
Originally Posted by MN Renovator View Post
You should have more airflow and less temperature rise for best efficiency. 150f into 70f is an 80 degree temp rise. 2-4 cfm per square foot of solar footprint is the rule of thumb I've been told.
So you are talking about within the solar panels or the HX? Makes sense to keep the temps lower inside the panels for better heat transfer and less loss through the panels.

I have heard to tilt the screen so the top is to the glazing and the bottom is towards the back. This is so the incoming air hits the glazing and not the air warmed by the screen, that way there is less heat touching the glazing and leaving through the glass
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