[Cathar]

Originally Posted by Karantanec

Anyway, I understand the need of turbulence and surface for an efficient heat transfer.
But why cant the block be designed to cause turbulence without narrowing the total intersection surface that the water has to overcome at any given time.

An 1/2" ID tube has an intersection of 127 mm^2
My system uses this intersection surface in every place ( fittings ID, tubing ID, pump ID ), even the radiator allows the water to find its way through so there is always the minimum of 127 mm^2 the water has to overcome at any time...

SO, ideally, the w-block too would have a total inner intersection surface of at least 127 mm^2.
The point? Thats my idea of an unrestricted flow path.

http://web.mit.edu/lienhard/www/ahttv122.pdf <- Read it