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Solar Heat exchanger (3 screen method)

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Posted by ashleysweda on January 4, 2018, 3:50 am
I’m in NW Pennsylvania near Erie, Zone 5.

I want to build several solar heat exchangers so I can be comfortable to of
fer a workshop at our Permaculture Farm.

I’m planning on using the 3 screen method.


1)Would the exchanger be more efficient if the sides were made with 2x12?
?? boards? More volume for air?
Cost is not a factor since I have my own lumber on property.

2)Would larger hole (8” to 12”) on top where hot air enters
 room be more efficient to move air, even maybe without a fan?  If so what  
size should the bottom hole be?

3)I know it is impossible to measure the “average” heat gai
n due to sun, cold, climate and other factors but is there a general idea h
ow much gain happens.  Basically to prove to people it is worth the labor a
nd cost.

4)If you have any new developments regarding the solar heat exchangers, I w
ould like to know before I build them.

Thank you very much,


Posted by Morris Dovey on January 5, 2018, 4:14 am
On 1/3/18 9:50 PM, ashleysweda@hotmail.com wrote:

You might find this web page helpful:


Morris Dovey

Posted by Carpenter Family on February 14, 2021, 7:16 pm
 On Thursday, January 4, 2018 at 11:14:11 PM UTC-5, Morris Dovey wrote:



ters room be  

 gain due to  

Wow - Ty Morris ~ read your whole web page - top notch info !
Do you sell plans ?
   Kevin Carpenter

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