Originally Posted by smex
i think this should be right.. i fixed all issues now and gained 7Â°C again.. ill post some new pictures tomorrow..
Just something to keep in mind - if you remove the stock 120 radiator you might actually gain a few degrees as the flow would increase.
This is because you will decrease the total resistance in the system. If you look at the picture below you will see a blue curve - this curve depicts the performance of the pump (not necessarily the h50 pump) - it is not calculated. It shows that as flow increases, the pump loses its' ability to provide head or pressure. Head in feet can be directly converted to psi (just multiply head in feet by .433).
The red and green curves are called system curves - they are calculated. They show that as flow increases the system demands more pressure or head - this is because resistance increases as flow increases. A more complex system (smaller pipes, lots of bends, and other restrictions) is going to require more head as you can see with the green line, which in this case represents a triple radiator system.
Now, where the system curve intersects the pump performance curve is called the operating point - this is where the pump will operate. So for the hypothetical example below, the triple radiator will perform at 68 gph and 8.5 feet of head whereas the dual radiator will perform at 130 gph and 7 feet of head.
I love hydraulics! Edited by cmeeks - 7/7/10 at 9:00pm