[Incoherent]

Originally Posted by Les

Link posted to indicate that authoritative(?) thermal engineers were noting the importance of the coolant's exit temperatures.

Think, I still prefer a device to be characterized by (C/W)inlets or (C/W)wo-ai at given flow-rates(Q)

I totally agree. The Win-Ain is intuitive, the Wout-Ain gives an instant feel for effectiveness.

The article is indeed about System level design decisions I guess. However I am having trouble figuring out which he is referring to with "Effectiveness", system or "cold plate".

When the effectiveness is large, the coolant entering the radiator will be hotter. The difference between Tout and Tamb will likewise be larger, meaning that more heat can be dissipated from the radiator to ambient. The system consequence is that the radiator be made smaller and cheaper, with lower pressure drop and lower fan noise.

I have trouble reading this and and not reacting... "! how many times does it have to be said, the temperature rise across the waterblock has nothing to do with waterblock effectiveness, efficiency, thermal resistance whatever, but ALL to do with the power being dissipated, the flowrate and the coolant fluid type...

Also, as the effectiveness increases, the temperature rise of the coolant increases. According to equation (2), a smaller flow rate is then needed for the given amount of heat absorption, Qactual. This will reduce the pressure drop in the entire loop.
With lower mass flow rates and pressure drop, a smaller, cheaper and more reliable pump may be used.

Edit: Apologies. My 2 year old posted this, which was an initial layout of my thoughts, not intended to be posted. Will leave it for now, is not too insulting I hope.