Shrouding

the creature · 02-05-2002, 08:23 AM

I planning to buy the D-teks heater core and I'm planning to do as Joe and pull the air from the front and out of side (or the other way), so that the air dosen't heat up the system.

Should I place the fan as far from the radiator as possible?

Where should I decrese the shroud from the heater core's areal to 120mm (fan)?

[dannzig] · 02-05-2002, 08:41 AM

about 5-6cm will probably be enough....

kemical · 02-05-2002, 10:49 AM

hehe, ive got 3.5 inches between my rad and my 172mm fan... a bit overkill, I think if youve got an inch between the two your safe.

Kevin · 02-05-2002, 12:41 PM

It isn't that the farther the fan is away from the radiator, the better. What you are trying to do is to get air to be pumped to theh "dead spot" on the fan. The dead spot is right behind the motor where the fan blades don't spin over. So an inch is generally enough to let the air spread to the dead spot. Within reason, any other increase in shroud length should not decrease performance as long as it is well shrouded.
-Kevin

Brad · 02-05-2002, 03:28 PM

Kev, not only to the dead spot, but generally get air flowing throughout the entire area of the radiator. If your radiator is 150mm x 150mm, you will only need an inch or so if you are using a 120mm fan. Whereas if your rad is 160mm x 200mm, and you are using a 120mm fan, your shroud will need to be a bit deeper, 2 or 3 inches

Kevin · 02-05-2002, 04:14 PM

Obviously every place where the fan blades are not directly over would be a dead spot.

02-05-2002, 08:23 AM	#1
the creature Cooling Savant Join Date: Jun 2001 Location: Norway Posts: 108	Shrouding I planning to buy the D-teks heater core and I'm planning to do as Joe and pull the air from the front and out of side (or the other way), so that the air dosen't heat up the system. Should I place the fan as far from the radiator as possible? Where should I decrese the shroud from the heater core's areal to 120mm (fan)?

02-05-2002, 08:41 AM	#2
[dannzig] Cooling Savant Join Date: Dec 2001 Location: Sweden Posts: 98	about 5-6cm will probably be enough.... __________________ \|father of ebba - www.ebba.da.ru\| at7max/d700/256/80/ti4200

02-05-2002, 10:49 AM	#3
kemical Cooling Neophyte Join Date: Nov 2001 Location: Nashville Posts: 26	hehe, ive got 3.5 inches between my rad and my 172mm fan... a bit overkill, I think if youve got an inch between the two your safe. __________________ -kem WinXP \| xp1500 @ 1.59ghz \| Iwill xp333-r rev2.1 \| 2X256 Kingston pc2700 \| Radeon 8500 retail \| 431W Enermax Whisper \| 2x 40gig Maxtor 133's in RAID 0 \| Cooling \| DD Maze2-1 \| DD Chipset Block \| 1/2" ID hose and fittings \| ehiem 1250 \| BIX shrouded to a 172mm 200+cfm Rotron Monster \| DD5 \| Custom inline Res \|

02-05-2002, 12:41 PM	#4
Kevin Slacking more than your weird uncle Join Date: Nov 2000 Location: San Diego, CA (UCSD) / Los Angeles, CA (home) Posts: 1,605	It isn't that the farther the fan is away from the radiator, the better. What you are trying to do is to get air to be pumped to theh "dead spot" on the fan. The dead spot is right behind the motor where the fan blades don't spin over. So an inch is generally enough to let the air spread to the dead spot. Within reason, any other increase in shroud length should not decrease performance as long as it is well shrouded. -Kevin __________________ I used to throw hot coffee all over the ass of the horse there, then whip him while he was kickin' at me. Those f***in things are crazy.

02-05-2002, 03:28 PM	#5
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	Kev, not only to the dead spot, but generally get air flowing throughout the entire area of the radiator. If your radiator is 150mm x 150mm, you will only need an inch or so if you are using a 120mm fan. Whereas if your rad is 160mm x 200mm, and you are using a 120mm fan, your shroud will need to be a bit deeper, 2 or 3 inches __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

02-05-2002, 04:14 PM	#6
Kevin Slacking more than your weird uncle Join Date: Nov 2000 Location: San Diego, CA (UCSD) / Los Angeles, CA (home) Posts: 1,605	Obviously every place where the fan blades are not directly over would be a dead spot. __________________ I used to throw hot coffee all over the ass of the horse there, then whip him while he was kickin' at me. Those f***in things are crazy.

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