Pro/Forums - View Single Post

Tachyon · 01-21-2007, 06:07 PM

Yeah .. I didn't think I could get you to ignore that part of the linear gear analogy. So ..ah .. ignore that part of the gear plz..

.. yes I know a classical 10' linear gear the entire length's weight would be present at all times ... I was hoping you'd make the jump with me once I made the fluid part of the analogy. The fluid that the pump has not placed in the vertical tube is not part of the equation.

An easy test would be to set up a pump head test .... then increase the head tube by 100%. Fill it completely with fluid. Attach the top end to the pump's intake and see if it can move the fluid around the loop. Loop must stay in the vertical orientation.
I know it will..... my point.

BTW- the basement floor idea is just a interesting side thought for me.. I'm really am thinking along the lines of a single radiator .... like a GT stealth 360 Blackice.

ah .. you could say I have a better the average understanding of mechanical and electrical engineering. No degrees - but ... plenty of practical experience. Yes "mentally comfortable" was my first choice but I liked the "engineering" flavor that best described my feelings.

Sry to hear your opinion on the Laing pumps. What pump do you like for this application?

I was glad to see your thermal calculations for this. And I did assume the deltaT we were discussing was from warm to cold and had nothing to do with ambient. What is your background if I might ask.

My wife is vet technician, so I've seen my share of syringes. For me they come in handy as a fine point oiler.

I will look over the radiator flow rate threads you provided. Looks to be good reads. That part of my design is still unfocused. But I'm not worried about it at this point since there are plenty of good solutions out there.

Question: “the D-Tek fusion is a jet-impingement design decreasing the flow”. Wouldn't a single pump dedicated to just that device (one of my 3 loops) be best able to deal with this back pressure as opposed to this one pump pushing against the CPU and two GPU's? So a larger pump might be necessary on a single loop series system. But you could get away with smaller pumps on a parallel system.

I’ve not ignored the friction of this system nor the back pressures that the various blocks might offer. I just do not have the field experience to be able to quantify it into my thinking at this point.

Greatly distilled (yes these have been long posts but fun none the less) you’re saying don’t over engineer it. A single 1/2” series loop from a larger pump to the CPU -> GPU1 -> GPU2 -> a radiator -> rez (no need to have two reservoirs now) is what has been proven to be “enough” to get the job done.

01-21-2007, 06:07 PM	#7
Tachyon Cooling Neophyte Join Date: Aug 2004 Location: 41.39x88.31 Posts: 11	Re: Feed back on my design.. Yeah .. I didn't think I could get you to ignore that part of the linear gear analogy. So ..ah .. ignore that part of the gear plz.. .. yes I know a classical 10' linear gear the entire length's weight would be present at all times ... I was hoping you'd make the jump with me once I made the fluid part of the analogy. The fluid that the pump has not placed in the vertical tube is not part of the equation. An easy test would be to set up a pump head test .... then increase the head tube by 100%. Fill it completely with fluid. Attach the top end to the pump's intake and see if it can move the fluid around the loop. Loop must stay in the vertical orientation. I know it will..... my point. BTW- the basement floor idea is just a interesting side thought for me.. I'm really am thinking along the lines of a single radiator .... like a GT stealth 360 Blackice. ah .. you could say I have a better the average understanding of mechanical and electrical engineering. No degrees - but ... plenty of practical experience. Yes "mentally comfortable" was my first choice but I liked the "engineering" flavor that best described my feelings. Sry to hear your opinion on the Laing pumps. What pump do you like for this application? I was glad to see your thermal calculations for this. And I did assume the deltaT we were discussing was from warm to cold and had nothing to do with ambient. What is your background if I might ask. My wife is vet technician, so I've seen my share of syringes. For me they come in handy as a fine point oiler. I will look over the radiator flow rate threads you provided. Looks to be good reads. That part of my design is still unfocused. But I'm not worried about it at this point since there are plenty of good solutions out there. Question: “the D-Tek fusion is a jet-impingement design decreasing the flow”. Wouldn't a single pump dedicated to just that device (one of my 3 loops) be best able to deal with this back pressure as opposed to this one pump pushing against the CPU and two GPU's? So a larger pump might be necessary on a single loop series system. But you could get away with smaller pumps on a parallel system. I’ve not ignored the friction of this system nor the back pressures that the various blocks might offer. I just do not have the field experience to be able to quantify it into my thinking at this point. Greatly distilled (yes these have been long posts but fun none the less) you’re saying don’t over engineer it. A single 1/2” series loop from a larger pump to the CPU -> GPU1 -> GPU2 -> a radiator -> rez (no need to have two reservoirs now) is what has been proven to be “enough” to get the job done. __________________ Tach - The two most common elements in the universe are hydrogen and stupidity! Last edited by Tachyon; 01-21-2007 at 06:39 PM.