Limited cooling space

[Greg Hermann]

>The way I see it, the coolant now "sees" a radiator that is 1/3 as high and
>3 times longer.  Why does this cool better than normal.  The log delta T is
>the same, no?  Is it a flow turbulence thing?  That is the only change I
>see.
>
>Gary Derian <gderian at oh.verio.com>

What Kenworth is doing is not what is described below--they mount two or
three separate radiators, one in front of the other, and pipe them in
series, with the warmest coolant going to the rear one, then to themiddle
on, then to the front. This gives a closer approximation to a true
counterflow heat exchanger. A true counter flow heat exchanger gives a
greater log mean temp. difference, and thus performs better.

Greg
>
>
>> >Someone the other day mentioned having a very confined area for a
>radiator.
>> >I just recalled one way of "helping".
>> >It involves dividing up the radiator so that the coolant rather than just
>> >going from side to side has to criss cross the radiator several times.
>> >  This is done by adding several barriers internal to the side tanks.  On
>> >the "cold" side of the radiator a divider plate is installed 2/3 of the
>way
>> >down from the top, and on the hot side, a divider is added 1/3 of the way
>> >down, so the coolant has to travel back and forth 3 times rather than
>once.
>> >  If your out for the gold, you might have to play with the water pump
>> >speed, some
>> >Grumpy
>>
>> Grumpy--
>>
>> You been checking out the radiator set-up on some of the late model, aero
>> nose K-Whoppers?
>>
>> Greg
>>