Here is the drawing George.

Paul Lamar

Paul;

Thanks for getting the ball rolling on the counterflow radiator.  I am
currently waiting for a quote on a more conventional custom radiator from
Ron.  I am going to send him a drawing similar to yours to get a quote for
the size I need.

Just a couple of comments; I think the side channels should be one piece
about 2 3/4" covering both rows and supporting the upper tanks;and a width
of 3/8" would be plenty strong.   The core can be a standard one piece,
2-row core, and the upper tank may not necessarily need to be two tanks;
possibly one tank with a lengthwise flow divider.  Or did Ron indicate that
it needed to be like 2, 1-row cores?

Al

Bad idea Al. You don't want those channels covering both rows. You don't
want any heat transfer between front and back. You want separate cores
with separate fins. A common fin two row core would defeat the design. I am
going to use 1/4 inch plywood in there to tie them together as it is good
structurally and has a low heat transfer coefficient.

According to Ron his phone is ringing off the hook :-) Ray just ordered
another rad from him as well.

Paul Lamar

Make that 1/2 inch wide 1/4 plywood strips least someone gets the
idea that the plywood blocks the air flow from front to back :-)

Paul Lamar
 
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