Originally Posted by Magus2727
What is the point of the above plot???
It's not as applicable to the h50 unless you're modding it. Normally you would use it to pick an appropriate pump and see where along the curve the pump is operating.
You can calculate the head losses for your water cooling system at a single flow rate - that is the friction losses through the tubing, through all of the elbows and bends, through the radiator, etc. Add them all up and you have the total head loss at that flow rate.
Do that for a whole range of flow rates and you get what's called a system curve - a plot of the increasing frictional losses as you increase flow rate through the system (see the red and green lines in the plot below).
Where the system curve and the pump curve intersect is where the pump operates.
What you see in the above plot is that a more complex system (the triple rad system) puts more strain on the pump - and so the pump operates at higher head and lower flow rate.
REALLY, the point is that one could create a user-friendly spread sheet that generates the system curve depending on the diameter and length of tubing, the radiator, the fittings, etc that the user selects. THEN, the user could select an appropriate pump to go with the system to get optimal flow and cooling. I might already be working on it Edited by cmeeks - 8/2/10 at 3:07pm