Pro/Forums - View Single Post - Thoughts on water pressure & flow rate...

Since87 · 11-18-2003, 07:14 PM

I'm resurrecting this old thread because I figured out today that the two graphs and accompanying information above is wrong.

My calculations for systems with paralleled blocks were wrong. The following are corrected graphs.

For the Sim20-R, per block flowrate is:

WWS 7.5
WWP 7.8

MCWS 12.3
MCWP 9.6

For the Sim20-RZ, per block flowrate is:

WWS 8.5
WWP 5.8

MCWS 10.8
MCWP 6.2

So, for restrictive blocks combined with a pump with a 'general purpose' PQ curve, per block flowrate may be better with a parallel setup. (The resistance of the rad and tubing have an impact on whether parallel or series is best.) With a pump designed for 'high' pressure, series is still best though.

Of course, all this assumes I've got my maths right this time.

11-18-2003, 07:14 PM	#246
Since87 Pro/Guru - Uber Mod Join Date: Sep 2002 Location: Indiana Posts: 834	I'm resurrecting this old thread because I figured out today that the two graphs and accompanying information above is wrong. My calculations for systems with paralleled blocks were wrong. The following are corrected graphs. For the Sim20-R, per block flowrate is: WWS 7.5 WWP 7.8 MCWS 12.3 MCWP 9.6 For the Sim20-RZ, per block flowrate is: WWS 8.5 WWP 5.8 MCWS 10.8 MCWP 6.2 So, for restrictive blocks combined with a pump with a 'general purpose' PQ curve, per block flowrate may be better with a parallel setup. (The resistance of the rad and tubing have an impact on whether parallel or series is best.) With a pump designed for 'high' pressure, series is still best though. Of course, all this assumes I've got my maths right this time.