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Old 11-03-20, 02:08 AM   #3
Apprentice EcoRenovator
Join Date: May 2011
Location: Tortosa, Spain
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I'm currently getting around 7C increase per panel. I can't increase the flow through the panels and the HX is quite small bore so there is a limit to what I can pass through it.

My thoughts are:
  • Add an extra panel in series so exit temperature is higher but flow rate is the same - would I get to 60C +?
  • Put 2 sets of 2 panels - flow rate through each panel is slower so exit temperature is higher - would I get 11C per panel increase?

Ultimately I will have a delta T of panel exit temperature - tank temperature, tank temperature is normally around 30C so the panel temperature is the important one.

Maybe, as the flow rate isn't going to change, it's pretty much the same one way or another.
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