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Long Haired Git · 03-30-2006, 10:07 PM

Adding a second pump improves flow.
Whether the extra heat from the pump offsets the benefits of the extra flow is another question.

Here's "a" PQ graph for the 1300: http://www.wcaquatics.com/cgi-bin/it...aqua_pump.html

I've not got approximator to where it needs to be, but the closest pump to it appears to be the Laing D4 which can push the same LPM but can handle more head, and the MCP350 which can get the same LPM but not as much head.

Anyway, I've used a MCR320QP rad and have not factored any tubing (coz its broken) and have used 2 x Apogee blocks , 2 x MCW60 blocks and 2 x MCW30 blocks. The Laing D4 gets over 4 LPM which is certainly enough, whilst the MCP350 gets over 2.5 LPM which should be enough.
Averaging suggests the 1300 would get around 3 LPM which is enough.
I'd almost be certain any extra flow from a second pump would be offset by its heat and not make a noticeable gain (or something like half a degree).
Far better to put a second radiator in for that much heat...

03-30-2006, 10:07 PM	#22
Long Haired Git Cooling Savant Join Date: Jan 2003 Location: Sydney, Oz Posts: 336	Re: Water Flow Characteristics Adding a second pump improves flow. Whether the extra heat from the pump offsets the benefits of the extra flow is another question. Here's "a" PQ graph for the 1300: http://www.wcaquatics.com/cgi-bin/it...aqua_pump.html I've not got approximator to where it needs to be, but the closest pump to it appears to be the Laing D4 which can push the same LPM but can handle more head, and the MCP350 which can get the same LPM but not as much head. Anyway, I've used a MCR320QP rad and have not factored any tubing (coz its broken) and have used 2 x Apogee blocks , 2 x MCW60 blocks and 2 x MCW30 blocks. The Laing D4 gets over 4 LPM which is certainly enough, whilst the MCP350 gets over 2.5 LPM which should be enough. Averaging suggests the 1300 would get around 3 LPM which is enough. I'd almost be certain any extra flow from a second pump would be offset by its heat and not make a noticeable gain (or something like half a degree). Far better to put a second radiator in for that much heat... __________________ Long Haired Git "Securing an environment of Windows platforms from abuse - external or internal - is akin to trying to install sprinklers in a fireworks factory where smoking on the job is permitted." (Prof. Gene Spafford) My Rig, in all its glory, can be seen best here AMD XP1600 @ 1530 Mhz \| Soyo Dragon + \| 256 Mb PC2700 DDRAM \| 2 x 40 Gb 7200rpm in Raid-0 \| Maze 2, eheim 1250, dual heater cores! \| Full specifications (PCDB)