You refering to bead blasting???
well, it does increase turbulance,surface area....and more turbulance means a thinner boundary layer and less laminar flow.
So ,yes. It has to increase cooling efficiency in the same design.
But your mileage may vary.
A systems performance is not measured by the heat exchanger alone.
The pump, rad , and tubing all play a major part in the system performance also.
The key is finding the correct mates to acheive the maximum cooling capability of a given setup.
I hope this answers your ?
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