Quote:
Originally posted by Blackeagle
Perhaps figure up the number of a rads tubes X tube length X thickness X2 to get the total surface area for cooling in a rad. But must also consider number of passes and tubes per pass to allow for head loss in narrow double pass vs wider single pass.
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We'll have to see from Bill's results whether we can come up with a mathematical model that yields the differences in flow resistance between our two cores fairly accurately. If we can, we may have a model that is generally useful for predicting the flow resistance of 2" thick Fedco HC's. It would be good to check the results for a third substantially different 2" Fedco HC to see how well the model held up.
It appears to me that water may only flow through 11 of the tubes in my heatercore. The top tanks don't seem to line up with some of the tubes in such a way that water would flow through all of them. Without taking the top tank off I can't tell for sure. I may end up removing the top tank after the testing though, depending on the results.
Bill,
I'll be interested in visible differences between the two that you notice.