[Greenbuilding] Solar air heater efficiency vs absorber area and airflow

[nick pine]

Clarke Olsen 

>... built an air-cooled wall collector where the incoming air went  
> up between the absorber panel and the glazing, over the top and down
 the back, for a double wash of the absorber...

>    Would collection be improved by making the spacing asymmetrical;  
> that is, making the air go faster on one side (glass side?) of the plate?

Efficiency would improve with slower air near the glass.

Nick


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