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Long Haired Git · 02-20-2005, 01:10 PM

Perhaps they did, but that was back in the day of high flow waterblocks.
These days people run highly restrictive waterblocks, and hence the need for 1/2" tubing is reduced rather significantly.
I'm working some numbers here.......ding - finished.
3 ft of 1/2" tubing will flow 300 GPH (choking on dumb empirical units), which calcs to be 0.6m of head per meter @ 16.7 LPM (inc coversion to sane metric).
10 ft of 1/2" tubing will flow 12.24 LPM, which calcs to be approx 0.17m of head.
It stands to reason that as the flow rate approaches zero, the head will approach zero.
Now I've forgotten the maths to generate an equation for a graph, but some ballpark guesses and sketching has 1m of 1/2" tubing generating 0.02m of head @ 3 LPM.
So, even if 3/8" tubing was five times as restrictive as that, it would be a massive 0.1m of head.

02-20-2005, 01:10 PM	#4
Long Haired Git Cooling Savant Join Date: Jan 2003 Location: Sydney, Oz Posts: 336	Perhaps they did, but that was back in the day of high flow waterblocks. These days people run highly restrictive waterblocks, and hence the need for 1/2" tubing is reduced rather significantly. I'm working some numbers here.......ding - finished. 3 ft of 1/2" tubing will flow 300 GPH (choking on dumb empirical units), which calcs to be 0.6m of head per meter @ 16.7 LPM (inc coversion to sane metric). 10 ft of 1/2" tubing will flow 12.24 LPM, which calcs to be approx 0.17m of head. It stands to reason that as the flow rate approaches zero, the head will approach zero. Now I've forgotten the maths to generate an equation for a graph, but some ballpark guesses and sketching has 1m of 1/2" tubing generating 0.02m of head @ 3 LPM. So, even if 3/8" tubing was five times as restrictive as that, it would be a massive 0.1m of head. __________________ 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)