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Hamza
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 Posted: Sun Mar 28, 2010 10:52 pm Post subject: Finally, a solution for cooling |
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Hi people,
This is in response to this thread.
I am posting here, as a new topic as it might be a quick help for hobbyists who are looking for cooling solutions.
I had been looking for some effective and cheap cooling system since summer started, when I visited Bharani Kumar(senior hobbyist), I saw these big 4" AC fans there cooling his tanks. I asked him the source. I went to close to the address provided and was still confused, after a couple of long calls with Bharani(sorry for bothering you and many thanks), and wandering around for a while I discovered that the shop was just opposite where I was standing. 
Here are a couple of pictures of my fan I got.
These are called as instrument cooling fans, they have quite high RPM and are available in sizes varying from 2"-6" AFAIK. As you can see, this particular one(4") 18w fan that can be directly plugged into the socket, no need for adapters, unlike underpowered CPU fans.
And now this fan reduces about(or more than) a solid 5degC in my 100liter planted tank. The fan is placed at 60degree wrt the surface of water and partially blows air in, coolng both the water and my light hood. 
Before adding this fan, temperature varied between 31-34deg and now it is within 25-28 range.
My old cooling setup with three CPU fans reduced about 1-2degrees maximum, so you can see the difference here.
Highly Recommended!
One lil problem though...
It produces a lot of surface disturbance, that might lower the content of dissolved CO2 in planted tanks. I am dealing with this by increasing the flow of CO2 to 5-6bps(for 3bps).
Hyderabad/Secunderabad Hobbyists can p.m. me for source info, others might have to source these out around their locations.
Regards!
Hamza |
Last edited by Hamza on Mon Mar 29, 2010 12:05 am; edited 1 time in total |
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mudjawd
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| Posted: Sun Mar 28, 2010 11:03 pm Post subject: Re: Finally, a solution for cooling |
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| Hamza wrote (View Post):
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I am dealing with this by increasing the flow of CO2 to 5-6bps(for 3bps).
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when did you shifted to pressurized CO2??? |
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Scorpio
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| Posted: Mon Mar 29, 2010 9:31 am Post subject: Re: Finally, a solution for cooling |
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| We are also using this type of fans in aquarium to decrease the temperature in summers. |
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essabee
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| Posted: Mon Mar 29, 2010 10:06 am Post subject: Re: Finally, a solution for cooling |
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More details:-
http://www.hicoolfans.com/products/instrument-cooling-fans-ac.htm |
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cdsravi
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| Posted: Mon Mar 29, 2010 1:43 pm Post subject: Re: Finally, a solution for cooling |
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| How much it cost ? |
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sid_p
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| Posted: Mon Mar 29, 2010 2:01 pm Post subject: Re: Finally, a solution for cooling |
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Sounds really effective 
Can anyone help on where we can get these in Bangalore? SP Road? |
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garothmaan
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| Posted: Mon Mar 29, 2010 2:19 pm Post subject: Re: Finally, a solution for cooling |
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Is it always necessary to install a fan on a planted Tank?....  |
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saadali
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| Posted: Mon Mar 29, 2010 2:36 pm Post subject: Re: Finally, a solution for cooling |
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| garothmaan wrote (View Post):
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Is it always necessary to install a fan on a planted Tank?....
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you have options of chillers too !! |
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Hamza
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| Posted: Mon Mar 29, 2010 3:13 pm Post subject: Re: Finally, a solution for cooling |
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| mudjawd wrote (View Post):
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when did you shifted to pressurized CO2???
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hmm....a month back I guess, started a new tank exactly a couple of weeks ago
| Scorpio wrote (View Post):
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We are also using this type of fans in aquarium to decrease the temperature in summers.
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nice! but I hardly some one from Delhi(I might be wrong) posting a big 6 or 8" fan like that.
@Ravi, you have a p.m.
@essabbee...thaks for the link!
| garothmaan wrote (View Post):
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Is it always necessary to install a fan on a planted Tank?....
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Well, yes, if you want to keep certain plants alive. |
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garothmaan
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| Posted: Mon Mar 29, 2010 3:28 pm Post subject: Re: Finally, a solution for cooling |
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Has anyone seen these fans above that huge tank at Nautilus? I have been to nautilus for about 5 to 6 times but I have never noticed these fans. However their lighting system is fantastic. Doesnt continuous circulation of water also brings down the temprature?
I have another idea for cooling... why not travel the water into a sump like a car radiator and keep a fan in front of it to cool the water and supply the water back to the tank?
Anyways thanks for the reply |
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nash81
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| Posted: Mon Mar 29, 2010 4:00 pm Post subject: Re: Finally, a solution for cooling |
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| Quote:
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nice! but I hardly some one from Delhi(I might be wrong) posting a big 6 or 8" fan like that.
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I think tirtha has in the past posted some threads of the same.
There are many fan options available in Delhi at bhagirath palace, most of these are chinese right from 2" to upto 8". Options are available in 220V AC or 12V DC. as well. However life span of these are a question. With most 220V burning up in a short period of time. There are some good brands available however the price is pretty expensive for those. Racord or something is the brand name if i recollect correctly.
Normally these fans would be available at markets which sell electronic components for various items like UPS, Invertors, High end Machinery spares at almost all major cities and towns.
Warm Regards
Nirav Shah
Indiapetstore.com |
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saikumar
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| Posted: Mon Mar 29, 2010 4:07 pm Post subject: Re: Finally, a solution for cooling |
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Hamza is that Anubias gold? or crypts in the 3rd pic? 
 Why do you lure us so much man; post some full tank pics for sake of journalism!! 
Garothmaan,
Radiator mechanism will cool the water only to room [outdoor]temperature i.e. < engine temperature.
Circulation?  hmmm wouldnt it skim-out the hard earned dissolved CO2?
Garothmaan, what you could do is put the same radiator in your Water cooler/AC then will do the trick.  |
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essabee
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| Posted: Mon Mar 29, 2010 6:14 pm Post subject: Re: Finally, a solution for cooling |
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The Hi-cool fans are a good find as they are also available with ball bearing. The ones in the picture in the first post have sleeve bearing - these have a normal life of 30,000 hours. The ones with ball bearings have a life expectancy of 60,000 hours. Again the noise production is lower with the ball bearing fan.
Causing surface disturbance with the wind flow will naturally cause the loss of CO2 from the enriched tanks but will also maximise the cooling. With very little loss of cooling you can deploy the fans in a different mode which will not cause surface agitation. Here you need to use the fan in an extractor mode and see you allow fresh air to flow in through pipes in spray bar method which agitates the air just above the surface of the tank water without actually agitating the surface.
That is exactly what I have done here:-
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discusfav
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| Posted: Tue Mar 30, 2010 1:17 am Post subject: Re: Finally, a solution for cooling |
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hi nirav
the brand for these fans is rexnord, available in 4", 6", 8" and they were reasonably priced and good quality lasting stuff ,and available in bush and bearing version.the second option being more pricey.
thanks
sameer |
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Tirtha C
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| Posted: Tue Mar 30, 2010 2:52 am Post subject: Re: Finally, a solution for cooling |
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| Hamza.... not sure about the level of Humidity in Hyderabad. If you got a dry weather like Delhi, you will be needing a thermostat device to switch on/off the fans on certain Temp drop. Talk to Sai. he is currently doing an R'nD project on an auto cut device ( I will connect that with my 8" fan ) which will help keeping the temp fixed. |
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