it's true for any turbulent flow. there will be increased mass/heat transfer and mixing over a laminar flow. i too assume they were planning for turbulence although i think the zig zags may have been there to increase the surface area. then again, i have not looked at a heater core lately.
__________________
"You can get much further with a kind word and a gun than you can with a kind word alone." - Al Capone
|