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Old July 30, 2013, 06:18 PM
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Originally Posted by sswilson View Post
This isn't so much about order as it is with flow patterns. IMO order doesn't have much effect at all (maybe 1 - 2c max) but a parallel loop without matching restrictions could have a drastic effect if the majority of water flow ends up favoring one leg of the cct vrs another (path of least resistance). I wish I knew more about flow dynamics in a closed loop though, because I'm wondering if perhaps fast flow past the output of the slower loop portion doesn't create a vortex that acts as a vacuum to get flow through that "slower" portion.

Does that make any sense at all?

that vacuum you are describing is called the venturi effect. We used to use venturi TEEs to create the exact effect you are describing to pull hot water through a radiator. To transfer heat to a room.

Venturi effect - Wikipedia, the free encyclopedia

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Old July 30, 2013, 06:33 PM
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Heh... I was going to say venture, but didn't want to sound like a complete idiot if I was way out in left field. :)
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