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General Liquid/Water Cooling Discussion For discussion about Full Cooling System kits, or general cooling topics. Keep specific cooling items like pumps, radiators, etc... in their specific forums.

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Unread 07-28-2005, 02:55 PM   #1
moonlightcheese
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Join Date: Jul 2005
Location: Atlanta, GA
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Default pressure and flow questions

i'm curious... i understand that flow rates will not change throughout the WC loop but... shouldn't the pressure vary? each block gives a certain drop in pressure after the liquid gets to the outlet. so i'm assuming there should be less pressure on the outlet side.

so in a pump -> cpu -> gpu-> chipset -> pump (this is an example, i realize this wouldn't work, i'm just illustrating the idea of pressure drop) system the pump would push... say... 9' of head pressure toward the cpu, then it would meet with the restrictions within the block and upon exiting, the flow would remain the same but wouldn't the pressure drop on the other side? the same could be said after the GPU and chipset blocks (although the pressure drop would be almost unoticeable since the cpu has probably dropped quite a bit of pressure).

but then flow and pressure share a parallel relationship don't they? i'm confused...
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Unread 07-28-2005, 03:11 PM   #2
Roscal
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Default

Yep, static pressure diminishes all along the loop. You have maximum pressure just at the outlet pump and the minimum pressure at its inlet. Pump is just a pressure jump, and this pressure jump is strictly equal to the sum of pressure drops from all the elements. Pressure and flowrate are 2 different things.
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