Originally Posted by Magus2727
i understand it in this way, however the heat disipation between the Dual and Tripple radiator would need another y-axis plot to see which is more benifitial?
the Tripple radiator may have a slower rate and run the pump harder but may still provide better cooling with all things equal for CFM pass radiator.
Also wont there need to be a life of pump Vs Total Head to see (if any at all) time you take off the life of the pump running it harder?
These are all EXCELLENT questions, and that's exactly where I'm headed with this! At first, the spreadsheet will simply calculate the flow rate and pressure in the system.
If you have looked at some of Skinnee labs reviews, you will see they have done some testing to see the heat removal vs flow rate of some of the radiators. Since we will know the flow rate, we should be able to get something out of that. But I personally will not be testing radiators to get the heat removal plots - I'm simply proposing combining existing knowledge into one easy to use interface.
Where it gets complicated is air flow across the radiator as that adds a whole new dimension. I may have to go with a theoretical/thermodynamics based model on that instead of lab testing. The lab testing required may just be too much.
Concerning the life of the pump, not sure how I want to do that yet. With large pumps for city water systems and such you have efficiency curves plotted on the pump performance curve. Where on the curve you operate then affects how much electricity you have to provide to pump a given amount of water (not really important for us since were not talking in terms of millions of gallons per day, mgd). Lot of unknowns here... may just have to create some general guidelines here. Usually, the greatest efficiency is achieved at about 1:30 o'clock on the performance curve (if y axis is 12 and x axis is 3 o'clock)
Anyway, gotta head out of town, I'll resume this topic in a day or two... or when I get the spreadsheet well under way.Edited by cmeeks - 8/2/10 at 3:45pm