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Old 06-13-2018, 10:07 PM
BillGrissom BillGrissom is offline
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Join Date: Aug 2010
Location: Sacramento, CA
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It wouldn't have half the cooling. Even if the 2-row gave exactly twice as many identical tubes, it would only give ~30% more cooling, since the front tubes see cooler air. What matters more is the thickness of the core in each. I think there are 1-row radiators which are as thick as a 2-row, so almost the same tube surface area, and perhaps less coolant flow resistance. Heat xfer to the air is limited more by the fin surface area than the tubes. Not sure, but I think many aluminum radiators have fewer rows, or even 1 row, yet they generally cool better than copper.
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