Notices

Overclockers Forums > Hardware > Cooling
Cooling Discussion of fans, heatsinks, thermal pastes and putting it all together to keep your rig cool
Forum Jump

Humidifier on the Intake

Post Reply New Thread Subscribe Search this Thread
 
 
Thread Tools
Old 05-13-09, 10:46 AM Thread Starter   #1
goldtna
Member



Join Date: Nov 2008

 
Humidifier on the Intake


Anyone tried using a humidifier at the intake to increase cooling?

I'm thinking it could cool in 2 ways:
1) Humid air has higher heat capacity so the same volume moving across your heat sink can absorb more heat. It's like moving more air across your heat sink.
2) If you get cheap humidifiers that don't convert water into water vapor right away and you see "steam" come out, it's even better cuz the mini water dropplets can remove more heat away from heat sinks as they evaporate on them.


So, anyone tried this before?
goldtna is offline   QUOTE Thanks
Old 05-13-09, 10:55 AM   #2
pik4chu
Senior Yellow Forum Rat

 
pik4chu's Avatar 

Join Date: Jan 2003
Location: Highlands Ranch, Colorado

10 Year Badge
 
I doubt you would see more than a degree or two drop in temps if at all. And generally adding moisture to your computer case is never a good idea. Just because you don't see the water vapor ('steam') doesn't mean there isnt any.

__________________
DFI X58-T3EH8 | I7-920 C0@3.0 (V8) | 6*2GB Corsair Dominator @1800-7-7-7-18 | eVGA 285 | 1.5 TB RAID 0 | Win7 64-bit (456Watts)
Main Server (WIP): DFI X58-T3EH8 | I7-920 C0@3.6 | 3*2GB Corsair Dominator @1800-7-7-7-18 | 8*1.5TB in RAID 5 (283Watts)

Folding User Stats
Team 32 Countdown heatware
pik4chu is offline Benching Profile Folding Profile Heatware Profile   QUOTE Thanks
Old 05-13-09, 12:35 PM   #3
JackNSally



Join Date: May 2005

 
And if it's steam that means it's being heated which means the air going in would be heated by the steam. Plus, moisture+electronics with electricity running through them do NOT make a good combo.

__________________
Main- 2500k@4988MHz (50x99.7MHz), 2x4GB Gskill RipJaws, Asus GTX 680
MPGS-Q6600@3GHz, 4x2GB Crucial, GTX 260
Steam ID- jacknsally
Heatware
JackNSally is offline Folding Profile Heatware Profile   QUOTE Thanks
Old 05-13-09, 12:44 PM Thread Starter   #4
goldtna
Member



Join Date: Nov 2008

 
no no, not HOT steam. I'm talking about room temperature water droplets, and not vapor yet. Vapor you cant see, but for cheap humidifiers, you get a cloud of tiny droplets at first from ultrasonic vibrations which evaporate into vapor in a few seconds once airborne. These droplets evaporate fast so there won't be water build up causing shorts (unless u turned off the exhaust fans and drove the humidity in the case to like 95% making dew form).
goldtna is offline   QUOTE Thanks
Old 05-13-09, 01:04 PM   #5
Kasm
Member

 
Kasm's Avatar 

Join Date: Jan 2005

 
You are correct that water has a high heat capacity but you are wrong in assuming it would increase cooling. In order to artifically increase humidity you have to vaporize the water which is adding heat to the water to turn it to steam. Though this added heat may not increase the bulk air temperature. Each H2O molecule has extra energy and is a localized hot spot. And each time a water molecule does come out of the vapor state it is going to impart its latent heat of fusion to its surroundings (ie. heat up its surrounds, not cool it).

In addition, Steam and liquid water do not have the same properties however. The specific heat of H20 drops when it converts from water to steam. In rough order of magnitude it drops in half. (Which is roughly double the specific heat of regular air). However at this point the density of H20 has also dropped significantly. Thereby reducing H2O cooling capability. The net result is that any small amount of extra cooling you did see would not be nearly worth the risk have a high humidity environment for your computer. Sudden temperature changes could cause the humid air to condense on your hardware.
Kasm is offline   QUOTE Thanks
Old 05-13-09, 01:07 PM   #6
White_Pawn
Member

 
White_Pawn's Avatar 

Join Date: Jul 2005
Location: Vancouver, Canada

 
i don't think this would be worth it. If you want a cooler pc, i'd suggest going with a H2O setup.

__________________
- - M a i n R i g - -
E2140 @ 375 x 8 = 3ghz w/ 1.3375v
^Tuniq Tower 120^
Gigabyte P35-S3L
powercolor HD4890 @ 850/975
OCZ System 1337s 2x1 5-5-5-15 2T @ 450mhz.
2TB 7200.12+ Seagate
Silverstone Decathalon 650W Modular
White_Pawn is offline   QUOTE Thanks
Old 05-13-09, 01:12 PM Thread Starter   #7
goldtna
Member



Join Date: Nov 2008

 
Kasm, I agree that if the water comes out of the vapor state, it will heat up the surface but it won't do that because it's going from a region of lower temperature to a region of higher temperature. Also, it's going from a region of higher humidity to a region of lower humidity. Both ensures that it is not likely to condense on the heat sink.

I did just realize one very important thing. That is, I have hard water where I live, the humidifier always leaves hard water dust on surfaces. That would be really bad for the heat sink in the long run when all of it's blades are covered with calcium haha.
goldtna is offline   QUOTE Thanks
Old 05-13-09, 01:14 PM   #8
Kasm
Member

 
Kasm's Avatar 

Join Date: Jan 2005

 
Doing the opposite would give better cooling:

1) Conformal coat your hardware to prevent shorting.
2) DE-humidify the air in your case and possibly heat it.
3) Have a sprayer spray water on your short proof hardware.

The water will evaporate taking it heat of fusion away from the hardware thereby cooling it. Depending on certain factors you could do a massive amount of cooling using this method.

NOTE: I don't actually recommend you doing this
Kasm is offline   QUOTE Thanks
Old 05-13-09, 01:16 PM   #9
Kasm
Member

 
Kasm's Avatar 

Join Date: Jan 2005

 
Sounds good, experiments always find the flaws in theory and they are great when I am not footing the bill/risks Good luck
Kasm is offline   QUOTE Thanks
Old 05-13-09, 01:16 PM Thread Starter   #10
goldtna
Member



Join Date: Nov 2008

 
LOL, yes, that would be sweet, but pretty hard to do.

I'm gonna try a short run with the humidifier at home tonight. I'll post results after. It'll be on a system that if it breaks, it's not that bad.
goldtna is offline   QUOTE Thanks
Old 05-13-09, 01:18 PM   #11
Kasm
Member

 
Kasm's Avatar 

Join Date: Jan 2005

 
Weird, my reply went up before his response.
Kasm is offline   QUOTE Thanks
Old 05-13-09, 05:31 PM Thread Starter   #12
goldtna
Member



Join Date: Nov 2008

 
what the? weird is right. When i replied, your reply (post #9) was definitely not there yet and that would make sense based on context.
goldtna is offline   QUOTE Thanks
Old 05-13-09, 07:44 PM Thread Starter   #13
goldtna
Member



Join Date: Nov 2008

 
Alright, tests results are as follows:

Using ducted fan that blows directly onto cpu heat sink and fan on a X2 4200+ system non overclocked.

Load temp without humidifer: 61C
Load temp with humidifer at the intake: 58C
Ambient temp at intake for both: 24.8C

Upon turning off humidifer, CPU load temp returned to 61C


Looks like it does to something noticeable.
goldtna is offline   QUOTE Thanks
Old 05-13-09, 07:54 PM   #14
Dice
Member

 
Dice's Avatar 

Join Date: Apr 2006
Location: Outside the box, thinking.

 
I suppose one of two things are happening here.

1- A fine coat of moisture is being applied to the heatsink, improving its ability to transfer heat to the air blowing through it, or evaporating from it, or;

2- The moisture in the air is evaporating before is is drawn into the intake, lowering the air temperature to below ambient.


In the long run, option 2 would be far better IMO as option 1 could cause a drip onto the motherboard or PCI-e card/socket causing remorse.


On the bright side, if your PC ever gets a virus, you could just put some Vick's Vapor Rub into the humidifier....

__________________
PCP&C 510 | P5K-VM | e6420 @ 3.2Ghz |4GB <Mushkin | 9600GT | rr2640X4 | 500GB RAID10

Why buy a wired/wireless router, or a Wi-fi Access Point? Harness the power of your old PC for free, instead.
Dice is offline   QUOTE Thanks
Old 05-13-09, 07:55 PM Thread Starter   #15
goldtna
Member



Join Date: Nov 2008

 
You are probably right. Not something that's doable in the long run though or else I would end up with hard water dust all over the inside of the case and will probably coat the heat sinks reducing cooling in the long run.
goldtna is offline   QUOTE Thanks
Old 05-13-09, 10:19 PM   #16
Dapman02
Member

 
Dapman02's Avatar 

Join Date: Jan 2008
Location: Overland Park, KS

 
Quote:
Originally Posted by goldtna View Post
You are probably right. Not something that's doable in the long run though or else I would end up with hard water dust all over the inside of the case and will probably coat the heat sinks reducing cooling in the long run.
that hard water dust is the minerals in water that will short out components, thus the reason why this is a bad idea.
Now, you COULD try to use distilled water and see if that is better. Seeing as how distilled water won't short out your components, it might work better for the long run.
still, in the end if you want great results, stick with water cooling.

__________________
Desktop: Return of Deneb
Processor: AMD Phenom II 955 @ 4.2Ghz
Cooling: TRUE Push/Pull
GPU: Visiontek 5850 Core 875Mhz/1175mhz memory
Motherboard: MSI 880G-E45
Case: CM Storm Enforcer
RAM: 2x2gb Samsung generic
HDD: Samsung 500GB 5400RPM
OS: Windows 7 64-bit
Christian Overclocker
Dapman02 is offline   QUOTE Thanks
Old 05-14-09, 02:51 PM Thread Starter   #17
goldtna
Member



Join Date: Nov 2008

 
Quote:
Originally Posted by Dapman02 View Post
that hard water dust is the minerals in water that will short out components, thus the reason why this is a bad idea.
Now, you COULD try to use distilled water and see if that is better. Seeing as how distilled water won't short out your components, it might work better for the long run.
still, in the end if you want great results, stick with water cooling.
Ya, distilled water would be an expensive, annoying, but available option haha.
This was more of a proof of concept experiment though. I was curious.
goldtna is offline   QUOTE Thanks
Old 05-14-09, 03:33 PM   #18
corruption
Member

 
corruption's Avatar 

Join Date: Jul 2005
Location: Paget, Bermuda (Until I can get back to Halifax, NS or get my fiancee to Bermuda)

 
Quote:
Originally Posted by Dapman02 View Post
that hard water dust is the minerals in water that will short out components, thus the reason why this is a bad idea.
Now, you COULD try to use distilled water and see if that is better. Seeing as how distilled water won't short out your components, it might work better for the long run.
still, in the end if you want great results, stick with water cooling.
Distilled water will still short out components if it condenses on them. Any dust on the computer parts will be an impurity that will help conduct electricity just as well as tap water would.

__________________
q6600 - 3.6 @ 1.525v (bios)
ASUS P5K Premium/WiFi-AP
4GB PC2 6400 - Generic Transcend
EVGA 460 GTX EE 1024MB - stock atm...
Western Digital 250GB SATA - 7200rpm 8MB cache
2x Seagate 7200.10 250GB SATA - Raid0
OCZ 520W PSU
Water cooling - MCP600, Apogee GT, MCW60, Swiftech MicroRes, BIP3

"Don't start a fight with an idiot. They'll bring you down to their level and then beat you with experience."
corruption is offline   QUOTE Thanks

Post Reply New Thread Subscribe


Overclockers Forums > Hardware > Cooling
Cooling Discussion of fans, heatsinks, thermal pastes and putting it all together to keep your rig cool
Forum Jump

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Mobile Skin
All times are GMT -5. The time now is 01:45 AM.
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
You can add these icons by updating your profile information to include your Heatware ID, Benching Profile ID or your Folding/SETI profile ID. Edit your profile!
X

Welcome to Overclockers.com

Create your username to jump into the discussion!

New members like you have made this the best community on the Internet since 1998!


(4 digit year)

Why Join Us?

  • Share experience
  • Max out your hardware
  • Best forum members anywhere
  • Customized forum experience

Already a member?