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Interesting,
I would of thought that making the water flow through the radiator three
time will actually reduce its heat transfer capability. REASON: The
amount of energy transfered is proportional to the the temperature
difference. Therefore as the difference increases the amount of energy
transfer also increases. This can be observed by plotting the temperature
of a jar of hot water as it cools. Initially it will cool quickly and then
as the temp difference decrease it cools slower and slower.
By cooling the water three times the amount of energy transfer on the second
pass will be less than the initial pass, and the third pass will be even
less.
Therefore a radiator of a given surface area will transfer more energy in a
single pass situation that a three pass flow pattern.
The best way of increasing the cooling effect would be to increase the
surface area by adding more cores, or increase the airflow over the
radiator.
Regards
Stuart
--=_ORCL_19138325_0r0
Date: 22 Jul 99 08:20:24
From:Jim Stuart <jimbb88@erols.com>
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Subject:overheating
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To those who asked, a triple, or triple flow radiator is one that has
internal baffles to force the incoming water to circulate through the
radiator 3 times before exiting to the engine. By spending more time in
the radiator, the water is able to transfer more heat & return to the
engine at a lower temp than a single or double pass radiator.
I think I am learning more about cooling than I want to know. Wish I
knew some thermal dynamics or fluid mechanics. Reading radiator adds is
a source of real frustration, as claims are not substantiated, apples
are compared to watermelons, etc.
As the weather has cooled somewhat, I was able to drive home with the
A/C this evening, water only got to 220` when stopped in traffic.
Jim Stuart
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