Quote:
[i]
Radiator E is a single pass, but regardless, I would expect a substantially different set of fudge factors to be required to approximate the PQ behavior of Rad E. Too big a difference in the flat tubes. I think it would take data from a group of three rads, with flat tubes identical to Rad E's tubes, but different overall lengths and/or configurations. That gives you three equations using the three unknowns. (The fudge factors.) [/b]
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Single pass worsens the agreement.
Fudge factors were changed in favour of a correlation.
Think it is difficult