I have 200 SF (25' * 8') of pass through solar collector on my south facing wall. I've made some changes to my home and need to redo the ducting on the collector. Pass through collectors run the air through a felt absorber. There's a lot of head loss there, but there is also a lot of square feet.
Basic idea here:
I had this running with the plenum on the pressure (fan outlet) side. What I wish to do is rewire this so the plenum would be on the suction side. This way I can draw hot air from the collector and distribute it inside the house through some no longer used wall vents (once part of a converted gravity fed coal burning furnace).
So the question is where to put the fan. On the plenum and use it make the turn, or downstream? Upstream might be 20' of 14" flex Y'd into a couple of short 10" lines. The fan could be spliced anywhere in the 14" line.
Is all insulated flex of the same R value about the same quality? The big boxes carry Atco, Standex and Master Flow.
I'm obviously fishing for some ideas, and know that posting here with an oddball question can give varied responses. But such it is.
j