help need information, please help!!

surfer007 · 11-11-2005, 09:06 PM

hi,

i'm doing som research for a project, and i need information relating the thermodynamics of a liquid cooling system. I looked at the article Cooling Technologies Explained and it helped. BUT i need more detail data/info about flowrate/resitance etc. i need equations, variables stuff like that. if there are any links or places please help me!!

thank you!!

superart · 11-11-2005, 10:31 PM

something like a textbook?

Long Haired Git · 11-12-2005, 01:29 AM

A glimpse into Pandora's box: See the thread "can we agree on the basis of "C" in C/W ?"

For the relationship of head vs flow rate, most things I modelled in my approximator fall into the formulae head = (a * flow * flow ) + ( b * flow ) but beyond that, they're all different.

bobo5195 · 11-12-2005, 07:03 AM

Go to a libary and get a book out on heat and mass transfer (prefaerably the introductorary version).

I would recommend this
http://www.amazon.com/gp/product/047...83155&v=glance
(get a second hand version)

Any textbook for undergrad engineers on fluid mech and heat transfer would be a good place to start but this is an entire area of science that you could barely cover anything in an entire uni course.

Could also try the g7 thread for more info as well.

surfer007 · 11-12-2005, 07:00 PM

thanx guys.

what is the g7 thread?

thanks.

i still need more info, preferably something with energy balance equation.

omg i'm so screwed! i gotta have this done by monday!

lol, i'm such a bad student.

bobo5195 · 11-12-2005, 11:44 PM

strom g7 block thread in the wb forum.

You mean the first law of thermodynamics i presume(energy in = energy out) or extened bernoulli equation

surfer007 · 11-13-2005, 10:03 AM

hey,

with steady state assumptions

0 = Q - W + m[(h1 - h2) + (v1^2 -v2^2)/2 + g(z1 - z2)

Q, W, m have dot

dm/dt = mass flow in - mass flow out

this is for a thermodynamics course, but it seems like i'm dealing with a lot of heat transfer course material...

i'm looking at the control volume of just the cpu and waterblock with the water running through it. I'm trying to figure the energy (heat) transfer from the cpu to the water as it passes through the block. I need to find a specific watercooling system first i think, then use max flow/min flow and figure out what temp the cpu is running at (idle, max load) and the cpu cooling is via water is working.
so, the water coming in (flow rate/temp) then water flowing out (flowrate,temp) then cpu heat transfer(qin)

yeaa someting like that..

lol..

sigh

:shrug:

BillA · 11-13-2005, 10:15 AM

can't do a system heat balance w/o the air info
you are at a dead end here

superart · 11-14-2005, 11:41 AM

Quote:

Originally Posted by surfer007

thanx guys.

what is the g7 thread?

thanks.

i still need more info, preferably something with energy balance equation.

omg i'm so screwed! i gotta have this done by monday!

lol, i'm such a bad student.

What exactly is due by monday..errr...today

11-11-2005, 09:06 PM	#1
surfer007 Cooling Neophyte Join Date: Nov 2005 Location: toronto Posts: 3	help need information, please help!! hi, i'm doing som research for a project, and i need information relating the thermodynamics of a liquid cooling system. I looked at the article Cooling Technologies Explained and it helped. BUT i need more detail data/info about flowrate/resitance etc. i need equations, variables stuff like that. if there are any links or places please help me!! thank you!!

11-11-2005, 10:31 PM	#2
superart Cooling Savant Join Date: Mar 2002 Location: FL Posts: 787	something like a textbook? __________________ When you do things right, people won't be sure youv'e done anything at all. Looking to buy/trade for used Deep Fryer and Vacume Pack Sealer.

11-12-2005, 01:29 AM	#3
Long Haired Git Cooling Savant Join Date: Jan 2003 Location: Sydney, Oz Posts: 336	A glimpse into Pandora's box: See the thread "can we agree on the basis of "C" in C/W ?" For the relationship of head vs flow rate, most things I modelled in my approximator fall into the formulae head = (a * flow * flow ) + ( b * flow ) but beyond that, they're all different. __________________ 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)

11-12-2005, 07:03 AM	#4
bobo5195 Cooling Savant Join Date: Aug 2005 Location: uk Posts: 400	Go to a libary and get a book out on heat and mass transfer (prefaerably the introductorary version). I would recommend this http://www.amazon.com/gp/product/047...83155&v=glance (get a second hand version) Any textbook for undergrad engineers on fluid mech and heat transfer would be a good place to start but this is an entire area of science that you could barely cover anything in an entire uni course. Could also try the g7 thread for more info as well. Last edited by bobo5195; 11-12-2005 at 09:21 AM. Reason: bit at the end

11-12-2005, 07:00 PM	#5
surfer007 Cooling Neophyte Join Date: Nov 2005 Location: toronto Posts: 3	whats the g7 thread? thanx guys. what is the g7 thread? thanks. i still need more info, preferably something with energy balance equation. omg i'm so screwed! i gotta have this done by monday! lol, i'm such a bad student.

11-12-2005, 11:44 PM	#6
bobo5195 Cooling Savant Join Date: Aug 2005 Location: uk Posts: 400	strom g7 block thread in the wb forum. You mean the first law of thermodynamics i presume(energy in = energy out) or extened bernoulli equation

11-13-2005, 10:03 AM	#7
surfer007 Cooling Neophyte Join Date: Nov 2005 Location: toronto Posts: 3	equations hey, with steady state assumptions 0 = Q - W + m[(h1 - h2) + (v1^2 -v2^2)/2 + g(z1 - z2) Q, W, m have dot dm/dt = mass flow in - mass flow out this is for a thermodynamics course, but it seems like i'm dealing with a lot of heat transfer course material... i'm looking at the control volume of just the cpu and waterblock with the water running through it. I'm trying to figure the energy (heat) transfer from the cpu to the water as it passes through the block. I need to find a specific watercooling system first i think, then use max flow/min flow and figure out what temp the cpu is running at (idle, max load) and the cpu cooling is via water is working. so, the water coming in (flow rate/temp) then water flowing out (flowrate,temp) then cpu heat transfer(qin) yeaa someting like that.. lol.. sigh :shrug:

11-13-2005, 10:15 AM	#8
BillA CoolingWorks Tech Guy Formerly "Unregistered" Join Date: Dec 2000 Location: Posts: 2,371.493,106 Posts: 4,440	can't do a system heat balance w/o the air info you are at a dead end here

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