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Radiator flow - Page 2

post #11 of 12
Ah, you wanted parallel, now i see tongue.gif
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post #12 of 12
If I understand the system plan correctly there is really no reason it would not work.

Radiator water flow restriction is by far the result of inner tube diameter and the number of them flowing in each direction. As a result, rads of different thickness can be quite different in pressure drop characteristics, but rads of the same type but different lengths will be very close.

An ST30 and a UT60 run in parallel would result in the thicker rad getting most of the flow but two UT60's of different lengths should share it very closely.
Different widths, say a 120 and a 140 series would be a different story again.

So as long as the rads are joined correctly the flow to both of them should be really quite equal. The only problem is that each rad only gets half the total flow rate, and rad efficiency is affected by flow rate. Sufficient pump power can go some way to negating that.

The pressure drop of different length rads can be seen here, in 120, 240 and 360 lengths.
http://martinsliquidlab.petrastech.com/XSPC-RS120-Radiator-Review.html
http://martinsliquidlab.petrastech.com/XSPC-RS240-Radiator-Review.html
http://martinsliquidlab.petrastech.com/XSPC-RS360-Radiator-Review.html
Edited by Jakusonfire - 9/3/13 at 10:55am
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