DC Squirrel Cage Microblowers vs. PC Fans

[Oregonism]

I like fan, im tired of searching everywhere to ask questions about DC or AC blowers or fans for micro-cabs.

Smaller the better Post any links you may have of PC Fans or Blowers that you use in your cab or want to use!


[Veclo] is running this Usb Powered 4 blade in his microcab
http://dx.com/p/usb-powered-4-blade-...an-black-90679
[chloemobile] is using an ORION 35cfm 12v DC blower
11" x 11" 110W Vert PLL Organic
[Bulénath] Panasonic Whisper Fan thread


Fans and Blowers: General
Digikey Corporation
Allied Electronics
All Electronics





Me likey -
Blower links:

EPM-Papst 125 RER [125cfm, 12VDC 425ma, my favorite so far!]

- Antec Slot Cooler Blower 42 cfm
- Delta BFB1212GH-A Blower 12vdc 36w 3.3a @60cfm 65dba 4.094 in H20/1020PA!!!!! $26
- Delta BG0903-B047 Blower 12Vdc 19w 1.6a @38cfm 5200rpm 1.9in H20/486pa $21

-6"x3" EPM-Papst Centrifugal Blower @623cfm, way overkill, just freakin cool! $55
================================================================
PC Fan Links:

Whisper Flat 6" AC Axial ball bearing fan [Tidar] 239cfm @59db. @HIDHUT Amazon[$20]

- 120mm Antec AC axial fan w/built in Speed Controller
- CoolerGuys Dual USB fans w/remote
- Directional Antec Spotcool Fan

 

[Friend]

22 cfm is nothing, there are regular 120mm pc fans out there that push more air and take up less space, and cost less

 

[Oregonism]

22 cfm is nothing, there are regular 120mm fans out there that push 120-130cfm and take up less space

Totally agree, even my crappy $3 92mm special puts out 50cfm. It is not necessarily "less" space it is the type of space and angle, blade interference, etc.

But they do have crappy output flow. Wish it were a little higher.

Thanks for the reply! Note to self....

 

[DownShift]

they might put out 50 cfm, but put a carbon filter over it and you may get 10 cfm of actual air flow. these fans rated at 22 cfm might put out 15 through a carbon filter.

Of course I'm just taking guesses here, but from what I hear, squirrel cage fans can deal with pressure way better than regular pc fans.

 

[Oregonism]

they might put out 50 cfm, but put a carbon filter over it and you may get 10 cfm of actual air flow. these fans rated at 22 cfm might put out 15 through a carbon filter.

Of course I'm just taking guesses here, but from what I hear, squirrel cage fans can deal with pressure way better than regular pc fans.

That is definitely something to think about Downshift....I don't use carbon filters over my fans, but for those who do, this might make all the difference! Good chit.

 

[microsmyname2]

iv'e always wondered the same question.
this sites got some decent priced fans and iv'e ordered other items from them before.... fast delivery, good service not bad products for the price.

http://www.allelectronics.com/make-a-store/category/220300/Fans/Blowers/1.html

 

[trem0lo]

The mini squirrel cage types are a bit louder than regular 120mm fans (had one in my pc once) but they would work well for a usb slot scrubber. The diameter of the fan could be the inner cyliner... might work nicely!

 

[Oregonism]

iv'e always wondered the same question.
this sites got some decent priced fans and iv'e ordered other items from them before.... fast delivery, good service not bad products for the price.

http://www.allelectronics.com/make-a-store/category/220300/Fans/Blowers/1.html

Rad...much better pricing than Amazon, however, they didn't provide any specs on cfm? Maybe I missed it somewhere, thinking about rounding up a couple.

 

[Oregonism]

The diameter of the fan could be the inner cyliner... might work nicely!

Can you explain this a little more, I don't quite follow, but I am very interested?

Thank you!

 

[microsmyname2]

Rad...much better pricing than Amazon, however, they didn't provide any specs on cfm? Maybe I missed it somewhere, thinking about rounding up a couple.

type the brand name and model number in google im sure you can find it on another site. full size the image if you need to i know the site give little info on some products. and not all of those fans are DC some are AC so make sure you notice that before you buy anything. Also they range from 5V's - 48V's. i wouldn't go higher then 12V's if your talking about a micro computer grow. or if you do make sure your power source can handle the load. if you buy one with lets say 18V's and run it with only 12V im sure your CFM rate willing be much less then rated.

just lemme know If you can't find the specs on one your looking at send me the link. id be more then willing to find it.

 

[Oregonism]

type the brand name and model number in google im sure you can find it on another site. full size the image if you need to i know the site give little info on some products. and not all of those fans are DC some are AC so make sure you notice that before you buy anything. Also they range from 5V's - 48V's. i wouldn't go higher then 12V's if your talking about a micro computer grow. or if you do make sure your power source can handle the load. if you buy one with lets say 18V's and run it with only 12V im sure your CFM rate willing be much less then rated.

just lemme know If you can't find the specs on one your looking at send me the link. id be more then willing to find it.

Thanks! I will look, I am more than capable just being lazy. I do like the 5v's that's another draw, right now I run my 12v .21A fans at 5.7v and they are probably doubling the amperage as an indirect result of the voltage.

Running above or below v on dc is ok Dc= voltage changes, amperage stays same, AC= voltage stays the same and amperage changes.
Running them on 5.7 volts quite frankly isn't much different than the 12v, minimal change and quieter but they are too little to offer much resistance, but I don't have a kill-a-watt or voltmeter to register, need to get that going and measure.

Thanks for the input,

[sidenote]
I always wondered why people never used those Dc radiators fans, they are like $20 and 2500 cfm, yet they draw 11+ amps easily, lol.

 

[Oregonism]

Ultimate Beginners Guide to PC FANS

 

[microsmyname2]

12 VDC 120 MM CENTRIFUGAL BLOWER

Mechatronics # B1232L12B. 12 Vdc, 0.360A ball bearing blower 120 x 120 x 32mm centrifugal blower. 2100 RPM. 44dBa. Two 2" leads with custom connector. cULus.

25 CFM

http://www.allelectronics.com/make-a-store/item/CF-403/12-VDC-120-MM-CENTRIFUGAL-BLOWER/1.html

--------------------------------------------------------------------

12 VDC BLOWER

Nidec Gamma30, Model D10F-12B6S3. 97mm x 33mm centrifugal, ball bearing blower. 12Vdc, 0.30A. Three 25" leads with 3-contact female connector.

17 CFM to 38 CFM

http://www.allelectronics.com/make-a-store/item/CF-339/12-VDC-BLOWER/1.html

------------------------------------------------------------------

lol i got board so here's two 12v's with the highest CFM

 

[microsmyname2]

Thanks! I will look, I am more than capable just being lazy. I do like the 5v's that's another draw, right now I run my 12v .21A fans at 5.7v and they are probably doubling the amperage as an indirect result of the voltage.

Running above or below v on dc is ok Dc= voltage changes, amperage stays same, AC= voltage stays the same and amperage changes.
Running them on 5.7 volts quite frankly isn't much different than the 12v, minimal change and quieter but they are too little to offer much resistance, but I don't have a kill-a-watt or voltmeter to register, need to get that going and measure.

Thanks for the input,

[sidenote]
I always wondered why people never used those Dc radiators fans, they are like $20 and 2500 cfm, yet they draw 11+ amps easily, lol.

I wasn't trying to say you couldn't find em. sorry bout that lol. but i think their selection of 5V's are lower cfm's.

running them on lower Volts/amps will decrease the cfm slightly. it's hard to notice from just listening and feeling the breeze.

im not saying it would make a huge difference on how much air it would push but it deff won't push the same amount.

that goes for any Pc fan not just blowers.

Im not an expert on the subject but im just speaking of my testing on all the fans ive toyed with.

but your welcome, you seem to be knowledgeable on air flow so ill zip my lips on that.

but i hope you find something useful that others can get ideas from.

Oh and i recall seeing a thread on grasscity with someone who used a dc blower with a carbon filter.... wasn't a ton of info on it tho.

 

[Oregonism]

I wasn't trying to say you couldn't find em. sorry bout that lol. but i think their selection of 5V's are lower cfm's.

Many thanks, absolutely appreciated, free info is the best info!

running them on lower Volts/amps will decrease the cfm slightly. it's hard to notice from just listening and feeling the breeze.

im not saying it would make a huge difference on how much air it would push but it deff won't push the same amount.

that goes for any Pc fan not just blowers.

Im not an expert on the subject but im just speaking of my testing on all the fans ive toyed with.

but your welcome, you seem to be knowledgeable on air flow so ill zip my lips on that.

but i hope you find something useful that others can get ideas from.

Oh and i recall seeing a thread on grasscity with someone who used a dc blower with a carbon filter.... wasn't a ton of info on it tho.

You are absolutely right about the voltage drop. It will most certainly decrease your output [while doubling your amperage too[not especially great]] but at a point.

The fan I am generally referring to is an 80mm spitting out a grand 22 or so cfm, I have tested these in the past, just didn't want to put an exact # on it, without not being in front of me, they lose about 15% I would say, but they usually run about 1500 rpm's faster than even starting at 92mm, that is the caveat.

A nice big juicey Thermaltake 120 or 144 they already spin slow, so they definitely prove more, what you are saying, they can be cut pretty drastically with low voltage.

I am thinking about mounting blowers in the better locations to breeze the plants. They could be mounted flush or slightly off center. Me thinks this is better in small cab versus my dangling pc fans!
That is where the gears are turning.

ciao

 

[quinoa64]

I am thinking about mounting blowers in the better locations to breeze the plants. They could be mounted flush or slightly off center. Me thinks this is better in small cab versus my dangling pc fans!
That is where the gears are turning.

Interesting -- as blower fans it seems like they'd take up *more* room because you have to mount them edge-on to the plants. But I guess it all depends on where you have unused space to fill.

The light that went on in my head was that, as an exhaust fan, these seem to have two advantages:

1) Much smaller outlet shape, easier to hide under the lip of a lid or handle or something == doesn't look (as much) like a fan or duct from the outside.

2) The air "turns a corner" inside the fan, so it's at least partially light-trapped.

I'm a big fan of usb powered fans. A single hub can power a bunch of em, and you don't have to mess with molex or hardwiring... although you still can if you want/need to.

 

[Oregonism]

Interesting -- as blower fans it seems like they'd take up *more* room because you have to mount them edge-on to the plants. But I guess it all depends on where you have unused space to fill.

The light that went on in my head was that, as an exhaust fan, these seem to have two advantages:

1) Much smaller outlet shape, easier to hide under the lip of a lid or handle or something == doesn't look (as much) like a fan or duct from the outside.

2) The air "turns a corner" inside the fan, so it's at least partially light-trapped.

I'm a big fan of usb powered fans. A single hub can power a bunch of em, and you don't have to mess with molex or hardwiring... although you still can if you want/need to.

These things could be wedged anywhere where a 1 inch slit is and still expose your exhaust and these would work in the quirkiest of places, thats maybe the real benefit?

Ive looked at the USB fans, and you could power it off AC with the Power supply jumper, so that is cool!

I have never grown in a pc case or really plan too, but that's where the blower got me thinkin, the exact same qualities as the exhaust output can work elsewhere for the intake as well, that's what I was thinking anyway, maybe its slightly parallel.

My [1 idea, so far] is to flush mount the blower and run from the inside to the outside with a little duct and vent air over the remote ballasted cfl's [23-42 watters].
I really like the remote ballasts, I have one light that is remotely wired and its gone strong for a few months now. A fan from the outside or even the inside has a strange angle to blow over a line of cfl ballasts on the outside of my case........

 

[Chloemobile]

DC Squirrel Cage Microblowers vs. PC Fans

I've got a 35 Cfm Orion blower cooling 110w pll through a 2" thick home made carbon scrubber keeping temps at 82 in a small space. Getting negative pressure and decent airflow from the intake vents. They are loud but I have a air filter running right by it and the white noise from that kind of drowns it out. There is a 60 Cfm blower that delta makes that has the highest static pressure rating I've seen from a fan of that size. I have my fan flush mounted to the top of my cab I love the slim profile.


=D

 

[microsmyname2]

Many thanks, absolutely appreciated, free info is the best info!





You are absolutely right about the voltage drop. It will most certainly decrease your output [while doubling your amperage too[not especially great]] but at a point.

The fan I am generally referring to is an 80mm spitting out a grand 22 or so cfm, I have tested these in the past, just didn't want to put an exact # on it, without not being in front of me, they lose about 15% I would say, but they usually run about 1500 rpm's faster than even starting at 92mm, that is the caveat.

A nice big juicey Thermaltake 120 or 144 they already spin slow, so they definitely prove more, what you are saying, they can be cut pretty drastically with low voltage.

I am thinking about mounting blowers in the better locations to breeze the plants. They could be mounted flush or slightly off center. Me thinks this is better in small cab versus my dangling pc fans!
That is where the gears are turning.

ciao

so your only going to use them for air circulation?

or you wanna try

Exhaust/carbon filter ?:jawdrop:

 

[Oregonism]

so your only going to use them for air circulation?

or you wanna try

Exhaust/carbon filter ?:jawdrop:

I was thinking both, although my vent fan isn't being scrubbed now, but it can be later on.

Still thinking about another space saving design and the blower might have given me another idea for a tub[tupperwarez] carbon filter