Pop Can / Downspout Solar Heater...
I have started construction of my Pop Can Solar Heater and have a question for you all.
I will duct my cold air in through the bottom and hot air out the top.
My question is; "Should the Hot Air Plenum be larger/smaller/same size, as the Cold Air Plenum?
I admit I know nothing about HVAC or Ducting air flows.
Any help would be greatly appreciated,
Tony
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