Greenhouse Temperatures 100 deg!

I tried to cover all the bases :wink:
I even added a recirculation feature so i have the option of forcing a variable percentage of the air to do several circuits underground before being released back into the greenhouse. To be honest, i might not need to use it, considering with the final test at 677cfm, the air temperature dropped 23.4F in 0.66 seconds as it travelled through the tube :wink:

John, I try not to buy anything commercial (aka silly price) so the collector will be another homebrew. My fence faces 30 degrees off to the west of true south which is quite handy and the collector will be a fair size to compensate.

I always try to do the homework before building something so here`s a pic of the fence taken on 18th january at 10.25am. As the sun lights up the fence quite well i`m reasonably confident it`ll work :wink:

 

In case anyone else is planning on a Dome I came across a couple of dome calculators on my travels:

http://www.desertdomes.com/dome2calc.html

http://www.simplydifferently.org/Geodesic_Dome_Notes?page=3

 

I couldn't understand why the strut triangles were isosceles, rather than equilateral. So that's game over for me too!

 

The frame is the easy part of the job :wink: