Quote:
Originally Posted by Uberlast
Ambitious plan !, sounds like the balancing between parallel rads will be tricky. I hope it works out as I want to redo the radiator setup in mine and will be following your build closely.
This is what I have now:
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That's a different setup, I've never seen one like that. I'd like to hear more.
Balancing is not that super hard, as the new 911 balances between three radiators without any control system. If the radiator passage size is equal, the flow more or less balances itself out.
If the passages are not equal, and in my case, the center radiator will produce more of a pressure drop than the size one, I'll have to fit a restrictor in the side one. Another option is to have a control system to dynamically adjust the flow.
Basically, in laminar pipe flow, all you need is a pair of pressure sensors to measure pressure drop, and you can estimate flow using the Darcy–Weisbach equation. I can code this into a microcontroller, and have this automatically adjust a diverter valve. The nice thing is pressure sensors are dirt cheap, like under $10 a piece, and Arduino microcontrollers are like $30.