so the conclusion is . . . . ?
lets examine the possibilities:
- the thermal conductivity of Cu and ss is not so different
- given the fabrication methods the end result is not so different
- the data is not so accurate
we know the first is not true, the second and third are possible
we know that swedged-on fins are always worse than brazed or soldered fins,
but differences between the Cu and ss tubes should be slight (deformation, 'springback', etc)
- we do not know if the tubes are upset into the preformed fin holes, or if both are made in the same way
we know that sales lit is not a test report (though I greatly like, and reference, the Lytron graphs)
conclusion ?
the same, best performance with a flat tube and soldered or brazed fins
(and note that the Al rad shown has VERY unique flat tubes - per Lytron and the tube extruder)
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