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No question that two cores plumbed in parallel is
more efficient in transferring heat due to the greater delta T. Also, With
less restriction, your flow through the cores would likely be greater (than two
in series) again aiding in the heat transfer from engine to air. The
possible down side is more complex plumbing and some folks have reported
problems with balancing the flow through two parallel radiators. Mine are
plumbed in series (mainly to simplify plumbing) and have worked
fine.
Ed A
----- Original Message -----
Sent: Monday, September 12, 2005 2:40
AM
Subject: [FlyRotary] Re: Optimal GPM
water pump flow.
Dave,
I don't know for sure myself but the so called
experts on another site recommend that 2 cooler should run in parallel -
FWIW.
George ( down under)
Al.
What I am after is trying to determine what the minimum required flow is for
the horsepower generated. More than anything else, I do not want to be
BELOW that amount, and consider it a minimum. Understandably, trying to
place twice or nearly 3 times the flow through the same circuit will result
in higher pressures and perhaps some pump cavitation. I will deal with that
as I have to.. more than anything else I want to make sure I am not starting
off with a DEFICIT of water flow ability.
I am considering 2
smaller radiators, and originally I intended to plumb them in series to get
the best cumulative Delta-T across them, but if I have "pressure" problems
due to the pump's flow, I may go to a parralel arrangement.
Feel free to critique, Al.. My cooling system is a work in
progress that is evolving. I live in a place that has 100 degree temps with
90% humidity at times, and given the other folks demonstrated problems with
inadequate cooling, I am very much in favor of designing in excess cooling
capacity, to the point I may even incur a slight weight or drag penalty,
such that I don't have to give constant attention to the risk of
overheating.
Dave
Al Gietzen wrote:
Subject:
[FlyRotary] Re: Optimal GPM water pump flow.
www.racemate.com They were unable to find the photo of the Mazda install but they say the did a few. I am going to take the plunge and get one..
Dave Just curious what you’re after with the racemate. You were asking about “optimal” flow – double the needed flow is not optimum; high pressure gradients around the loop, unnecessary pumping power. Al
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