Shroud Design

luke o · 18th April 2004, 4:08 AM

Just getting cracking in water cooling, bought myself a heater core and thought I should design a shroud for it ... here goes intial design ...

Click to view full-sized image!
Hosted by UGBox Image Store

Click to view full-sized image!
Hosted by UGBox Image Store

The Heater Core I have is as the pics say a VL Commodore. What do you think of the design the 120mm fan will be going inside the shroud not outside. The flaps are for bolts to the side panels that will be welded onto the heater core as it doesnt have any. Should I paint it Black? Cheers.

javascripterror · 18th April 2004, 7:32 AM

Why build a shroud if you are going to put a fan "Inside" it.

luke o · 18th April 2004, 11:49 AM

No Idea, You tell me ? :-)

the fan itself (the blades) will not be covered it will just be the screw holes will be screwed to the underside of the lip, I dont see how that is different to having the fan on the outside.

The main purpose of the shroud was to stop the heater core getting dented as it has no side rails (i need to add them) .. and then I thouigh well I might as well build a structure to hold the fan.

I will knock up a side on 3d view with the fan and grill in place so you know what i am saying.

javascripterror · 18th April 2004, 12:37 PM

I know what your doing but the whole idea of a shroud is to place the fan some distance away from the radiator core. This increases the air flow and aids in cooling the water inside the radiator core.If you place the fan inside the shroud you will decrease the air flow and heat up the water by creating a reduced airflow.

luke o · 18th April 2004, 12:39 PM

I See. What is the optimum distance for a 120mm fan from the radiator? Much Appreciated.

javascripterror · 18th April 2004, 12:50 PM

Optimum isn't achievable inside the case area as to get to the correct flow you would require a long tapered tube. I work on 25 mm because of the space availability within the case. Not ideal but it fits within the strength and material availability. Others nominate 1/2 the core radius of the fan. It will be up to you to decide which you use.

luke o · 18th April 2004, 12:53 PM

Thank you, I adjust my designs. Any other tips?

chylld83 · 18th April 2004, 1:16 PM

you might find this thread interesting and useful.

painting it black is totally up to you, it won't have any significant effect on its thermal properties (which are largely irrelevant for a shroud, anyway.)

i painted my rad a nice shiny silver because i like shiny things.

luke o · 18th April 2004, 1:58 PM

Almighty Cathar , We are Not Worthy.

I saw his thread and it was the inspiration for my design ... looking at his again I think I 'll drop the gaps in the side panel flaps, decrease the width and place the fan externally 25mm - 30mm away from the radiator.

thanks guys, will post modifed designs so you can pick out any other flaws ... :-)

I like shiny things too....

luke o · 18th April 2004, 2:19 PM

Not quite as thick, so fan can be externally mounted, and gaps removed from flaps so they can be folded over each other (cheers Cathar Big Arse Radiator).

Click to view full-sized image!
Hosted by UGBox Image Store

Bravo · 18th April 2004, 5:12 PM

I wrote up a detailed guide on how to build your own shroud, based off Cathar's 80cm strip idea.

http://bravo.ausgamers.com/radiators/index.html

F@TMAN · 18th April 2004, 5:57 PM

What is everyone's opinion on having the fans sucking air through the radiator rather than pushing it through, does that eliminate the need to seperate the fans from the radiator and is this method more efficient?

*EDIT* italics

chylld83 · 18th April 2004, 6:21 PM

sucking is more efficient. it requires less gap between the fan and the radiator and gives better performance at lower noise levels.

javascripterror · 18th April 2004, 6:50 PM

Add to chylld83's comments that the airflow is presented to the fan in a much more structured way by the shroud. That clean air can be pulled from the outside of the case and is therefore cooler. Final comment would have to be that inspection and cleaning of the radiator fins,which I know we all do regularly to maintain our air flows, is much easier.

luke o · 18th April 2004, 8:03 PM

thanks peoples much appreciated i can see my shroud with eyes less clouded now, hopefully it will all come together...

So sucking is better than pushing the air thru the radiator? What about both?

Nice Guide Bravo , cheers for that many many good ideas to incorporate.

18th April 2004, 4:08 AM	#1
luke o Member Join Date: Jun 2003 Location: WA Posts: 2,798	Shroud Design Just getting cracking in water cooling, bought myself a heater core and thought I should design a shroud for it ... here goes intial design ... Click to view full-sized image! Hosted by UGBox Image Store Click to view full-sized image! Hosted by UGBox Image Store Click to view full-sized image! Hosted by UGBox Image Store The Heater Core I have is as the pics say a VL Commodore. What do you think of the design the 120mm fan will be going inside the shroud not outside. The flaps are for bolts to the side panels that will be welded onto the heater core as it doesnt have any. Should I paint it Black? Cheers. __________________ OCAU Extreme Cooling Club H2O Member q9650@3.6ghz/thermright 120 ultra extreme/4GB Ram/5770x2/Dell 24" TFTx2 OCAU Camera Club Member Nikon D90, Sigma 10-20mm, 30mm F1.4 EX, 70-200mm F2.8 EX, Spyder 2.

18th April 2004, 7:32 AM	#2
javascripterror Member Join Date: Mar 2002 Location: NSW Posts: 2,972	Why build a shroud if you are going to put a fan "Inside" it. __________________ Cogito Ergo Bummer. Folding@home 90,000 Club Member. Folding@Home 2,640,000 Points Milestone. Home of the Radiical X-Block www.radiical.com.au

18th April 2004, 11:49 AM	#3
luke o Member Join Date: Jun 2003 Location: WA Posts: 2,798	No Idea, You tell me ? :-) the fan itself (the blades) will not be covered it will just be the screw holes will be screwed to the underside of the lip, I dont see how that is different to having the fan on the outside. The main purpose of the shroud was to stop the heater core getting dented as it has no side rails (i need to add them) .. and then I thouigh well I might as well build a structure to hold the fan. I will knock up a side on 3d view with the fan and grill in place so you know what i am saying. __________________ OCAU Extreme Cooling Club H2O Member q9650@3.6ghz/thermright 120 ultra extreme/4GB Ram/5770x2/Dell 24" TFTx2 OCAU Camera Club Member Nikon D90, Sigma 10-20mm, 30mm F1.4 EX, 70-200mm F2.8 EX, Spyder 2.

18th April 2004, 12:37 PM	#4
javascripterror Member Join Date: Mar 2002 Location: NSW Posts: 2,972	I know what your doing but the whole idea of a shroud is to place the fan some distance away from the radiator core. This increases the air flow and aids in cooling the water inside the radiator core.If you place the fan inside the shroud you will decrease the air flow and heat up the water by creating a reduced airflow. __________________ Cogito Ergo Bummer. Folding@home 90,000 Club Member. Folding@Home 2,640,000 Points Milestone. Home of the Radiical X-Block www.radiical.com.au

18th April 2004, 12:39 PM	#5
luke o Member Join Date: Jun 2003 Location: WA Posts: 2,798	I See. What is the optimum distance for a 120mm fan from the radiator? Much Appreciated. __________________ OCAU Extreme Cooling Club H2O Member q9650@3.6ghz/thermright 120 ultra extreme/4GB Ram/5770x2/Dell 24" TFTx2 OCAU Camera Club Member Nikon D90, Sigma 10-20mm, 30mm F1.4 EX, 70-200mm F2.8 EX, Spyder 2.

18th April 2004, 12:50 PM	#6
javascripterror Member Join Date: Mar 2002 Location: NSW Posts: 2,972	Optimum isn't achievable inside the case area as to get to the correct flow you would require a long tapered tube. I work on 25 mm because of the space availability within the case. Not ideal but it fits within the strength and material availability. Others nominate 1/2 the core radius of the fan. It will be up to you to decide which you use. __________________ Cogito Ergo Bummer. Folding@home 90,000 Club Member. Folding@Home 2,640,000 Points Milestone. Home of the Radiical X-Block www.radiical.com.au

18th April 2004, 12:53 PM	#7
luke o Member Join Date: Jun 2003 Location: WA Posts: 2,798	Thank you, I adjust my designs. Any other tips? __________________ OCAU Extreme Cooling Club H2O Member q9650@3.6ghz/thermright 120 ultra extreme/4GB Ram/5770x2/Dell 24" TFTx2 OCAU Camera Club Member Nikon D90, Sigma 10-20mm, 30mm F1.4 EX, 70-200mm F2.8 EX, Spyder 2.

18th April 2004, 1:16 PM	#8
chylld83 Member Join Date: Jan 2004 Location: Sydney Posts: 1,240	you might find this thread interesting and useful. painting it black is totally up to you, it won't have any significant effect on its thermal properties (which are largely irrelevant for a shroud, anyway.) i painted my rad a nice shiny silver because i like shiny things.

18th April 2004, 1:58 PM	#9
luke o Member Join Date: Jun 2003 Location: WA Posts: 2,798	Almighty Cathar , We are Not Worthy. I saw his thread and it was the inspiration for my design ... looking at his again I think I 'll drop the gaps in the side panel flaps, decrease the width and place the fan externally 25mm - 30mm away from the radiator. thanks guys, will post modifed designs so you can pick out any other flaws ... :-) I like shiny things too.... __________________ OCAU Extreme Cooling Club H2O Member q9650@3.6ghz/thermright 120 ultra extreme/4GB Ram/5770x2/Dell 24" TFTx2 OCAU Camera Club Member Nikon D90, Sigma 10-20mm, 30mm F1.4 EX, 70-200mm F2.8 EX, Spyder 2.

18th April 2004, 2:19 PM	#10
luke o Member Join Date: Jun 2003 Location: WA Posts: 2,798	Not quite as thick, so fan can be externally mounted, and gaps removed from flaps so they can be folded over each other (cheers Cathar Big Arse Radiator). Click to view full-sized image! Hosted by UGBox Image Store __________________ OCAU Extreme Cooling Club H2O Member q9650@3.6ghz/thermright 120 ultra extreme/4GB Ram/5770x2/Dell 24" TFTx2 OCAU Camera Club Member Nikon D90, Sigma 10-20mm, 30mm F1.4 EX, 70-200mm F2.8 EX, Spyder 2.

18th April 2004, 5:12 PM	#11
Bravo Member Join Date: Jun 2001 Location: Brisbane, Australia Posts: 10,057	I wrote up a detailed guide on how to build your own shroud, based off Cathar's 80cm strip idea. http://bravo.ausgamers.com/radiators/index.html

18th April 2004, 5:57 PM	#12
F@TMAN Member Join Date: Jan 2003 Location: Sydney Posts: 154	What is everyone's opinion on having the fans sucking air through the radiator rather than pushing it through, does that eliminate the need to seperate the fans from the radiator and is this method more efficient? EDIT italics __________________ \| Dell Dimension 9200 \| Intel Core 2 Quad Q6600 2.4GHz \| 4GB (4X1GB) DDR2 667MHz \| 320MB nVidia GF8800 GTS \| SB X-Fi Xtreme Gamer \| Successful trades: santah Last edited by F@TMAN; 18th April 2004 at 6:34 PM.

18th April 2004, 6:21 PM	#13
chylld83 Member Join Date: Jan 2004 Location: Sydney Posts: 1,240	sucking is more efficient. it requires less gap between the fan and the radiator and gives better performance at lower noise levels.

18th April 2004, 6:50 PM	#14
javascripterror Member Join Date: Mar 2002 Location: NSW Posts: 2,972	Add to chylld83's comments that the airflow is presented to the fan in a much more structured way by the shroud. That clean air can be pulled from the outside of the case and is therefore cooler. Final comment would have to be that inspection and cleaning of the radiator fins,which I know we all do regularly to maintain our air flows, is much easier. __________________ Cogito Ergo Bummer. Folding@home 90,000 Club Member. Folding@Home 2,640,000 Points Milestone. Home of the Radiical X-Block www.radiical.com.au

18th April 2004, 8:03 PM	#15
luke o Member Join Date: Jun 2003 Location: WA Posts: 2,798	thanks peoples much appreciated i can see my shroud with eyes less clouded now, hopefully it will all come together... So sucking is better than pushing the air thru the radiator? What about both? Nice Guide Bravo , cheers for that many many good ideas to incorporate. __________________ OCAU Extreme Cooling Club H2O Member q9650@3.6ghz/thermright 120 ultra extreme/4GB Ram/5770x2/Dell 24" TFTx2 OCAU Camera Club Member Nikon D90, Sigma 10-20mm, 30mm F1.4 EX, 70-200mm F2.8 EX, Spyder 2.