Another Parallel vs Serial Rads

chiyau · Nov 2, 2003

this is my thinking..

with rads in parallel, if one rad cools the water to 29C and the other rad cools it to 27C, when the water rejoin back together the water would be about 28C, so not much improvement from just having 1 rad??

but when the rads are in serial the water gets cooled by the 1st rad (say to 27C) and then gets cooled even more by the 2nd (say 25C) thus the resulting in better temps?

this to me makes sense but is it true??

ILikeMy240sx · Nov 2, 2003

Nope aaccording to the equation Q=MCdeltaT you would get more cooling if the temperature difference is greater. If hot water is on both rads then cooling done by rads are greater than if you cooled your coolant to some degree then try to cool it again. In the second rad(in series) the value of deltaT would me smaller than the first rad.

I.M.O.G. · Nov 2, 2003

Welcome to the forums!

The logic in the thread starting post isn't correct.

Parrallel and series have different advantages and disadvantages. Here are a couple off the top of my head:

Parrallel rads have the advantage of a higher deltaT.

Serial rads have the benefit of higher flow velocity.

chiyau: YGPM. Check my sig.

ILikeMy240sx · Nov 2, 2003

Even with higher flow velocity when using series rads, Running rads in parallel usually gives you better temp.

Except for single pass heater cores (running them in series will give better temp than running them in parallel)

I.M.O.G. · Nov 2, 2003

Do you have any linkage to reviews on this? Or is this personal experience talking?

I don't have any great linkage on parrallel vs. series, and I could use some for my collection if you got some.

chiyau · Nov 2, 2003

thanx for clearing it up for me, i guess i'll set mine up in parallel and see how it goes.

ILikeMy240sx · Nov 2, 2003

It's from reading one of the threads here long time ago about single-pass heater cores. Ill find it and post it up

chiyau · Nov 2, 2003

is the Bix a single or dual pass rad?

LtBlue14 · Nov 2, 2003

BIX = two pass heatercore

Another Parallel vs Serial Rads

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