Powering computer fans ?

[jhale]

I found these 205 cfm computer fans I want to use in a cooling tower.

how do you hook them up to a power supply, when they are not used in a computer case? AC adaptor?

 

[aaron]

They are just 12Volt so you just need a 12volt AC wall adapter, dependng on the amp rating of the adapter you can wire a number of them up to the one adapter.
Someone correct me if i'm wrong about this?

 

[Rborgia]

Jonathan...

12V adapter from Radio Shack....

However, did you see this?: Noise 62 dba ? thats pretty loud!

 

[inline6]

Jon,

You know all those transformers you don't use anymore? Most of them are 12V, however you can use a lower voltage if you are concerned about noise levels of the fans, they 'll just spin a little slower, but they will work.

Jameco.com has a nice selection of quiet computer fans.

 

[212jay]

Hey J I have a couple of fans you can have. I believe they are 5in.

 

[FRY]

you will need a 12 volt 60 VA or 500 ma DCpower supply to run these fans

 

[FRY]

wait till monday ill see what fans we have at work there 110 volts

 

[noodleman]

wow 205cfm...thats alot. But 62dba, thats loud, i can bearly stand my 32dba fans.
To power this you just need a 12v DC adoptor that has atleast a 2.5 Amp provided.

 

[jhale]

I know they will be loud, but I will compromise that over running a 9.5 amp chiller, ouch it hurts to run that beast.

 

[bad coffee]

Canal street. I found those pick a voltage ones for $3.99 The same one at radiosmack was $12.

and 62 db is gonna suck. Check out other smaller fans and see if you can get a couple of fans that are low db but high cfm.
http://www.newegg.com/Product/Product.asp?Item=N82E16811999127

B

 

[Chiefmcfuz]

Can you splice 2 or 3 fans together on 1 power supply?

 

[FRY]

yes ,just add the load up and use a power supply of total watts

 

[House of Laughter]

JH, we are throwing out computers left and right, I should be able to get a bunch for free - not 100% sure if they are 5" or not, But I'll check.

House

 

[jhale]

JH, we are throwing out computers left and right, I should be able to get a bunch for free - not 100% sure if they are 5" or not, But I'll check.

House

cool the more fans the better!

 

[ming]

Canal street. I found those pick a voltage ones for $3.99 The same one at radiosmack was $12.

and 62 db is gonna suck. Check out other smaller fans and see if you can get a couple of fans that are low db but high cfm.
http://www.newegg.com/Product/Product.asp?Item=N82E16811999127

B

Where on canal st? I'd like a AC adapter which I can pick the voltage so I can adjust depending on the temp.

 

[FRY]

odlot had them

 

[kimoyo]

Yeah, the 62db is a little loud. But did you see the funnel fan adapters they have for 2.49? You could fit those right into the pipe.

 

[Pseudo]

Dont use 120v fans on it. When the salt creep gets in them they will fry and could cause a fire. Not worth it IMO.

These are cool and silent

http://www.3dcool.com/product_info.php?products_id=1612&3dCsid=573c731c208f7094bfd07958bd820994

These are better for your project since they can be remote and force directed air can be used anyway you want. They are enclosed (somewhat) and are cool looking.

Kasei

 

[jhale]

that link opened a different fan, but I think this is the one that you found

http://www.3dcool.com/product_info.php?products_id=749&3dCsid=573c731c208f7094bfd07958bd820994

and the specs:

Name Description
Model PMB1212PLB2-A
Size 120x120x32mm
Bearing Type Dual Ball Bearing
Rating Voltage (VDC) 12
Power Current (A) 0.82
Power Consumption (W) 9.8
Speed (RPM) 2500
Air Flow (CFM) 35.9
Static Pressure (Inch-H2O) 0.89
Noise (dBA) 53.8
Weight (g) 250
NOTE Specifications subject to change without notice per Sunon
Specifications are subjected to change without notice.

 

[jhale]

just for comparison these are the specs for icecap's 120mm fans. they are the ones I use now. I find them kind of loud in the living room.

Motor (full speed): Nominal Voltage = 12 vdc
Operating Voltage Range = 6 ? 14 vdc
Nominal Running Current = 0.660 amps
Max Locked Rotor Current = 1.75 amps
Running Power = 7.9 watts
Average Speed = 3700
Bearings = Ball
Air Flow = 102 cfm
Acoustic = 47.8 dBA
Construction: Venturi: Plastic, Black, UL 94V-0
Propeller: Plastic, Black, UL 94V-0
Life Expectancy: This fan is designed for continuous duty life of 78,000 hours at 40?C.
Agency Approvals: UL, CSA, TUV
Additional Features: Brushless DC Motor Polarity Protected Locked Rotor Protection Thermal Speed Control Operating Temperature: -10?C to 70?C
Storage Temperature: -40?C to 85?C Thermal Speed Control Enviroshield Type 2 Termination: Enviroshielded PTC on 24? zip cord 24? Harness Assembly, AWG 22, UL 1061 Pin 1 ? Red, Power (+) Pin 2 ? Black, Return (-)