Unusual request - highest CFM fans and controller with low temps

v0n

v0n

v0n

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A bit strange request, considering overclocking section, but I hope I can rely on your fan and controller experience fellas.

I'm attempting to design temp control for my small garden studio using PC fans and PC fan controller to exhaust warm air at ceiling level. I know, I know, weird plan, but bear with me. The room is too small to go air conditioning, I already have proper 5" centrifugal fan built into the roof structure for summer months, but as autumn and winter months are upon us, there is just no point of switching it on all day, makes too much noise and in general is a bit overkill. My plan is to design smaller and cheerful auxiliary system on one of the walls at ceiling level using high CFM PC fans exhausting air to the outside and PC fan controller with temp sensors that would switch on and off in temperatures above 24 celcius (I'd want to set those temps, so I can also use it as a fail safe in summer, let's say at 28 degrees). Before anyone suggests, bathroom fan would be too much hustle and too little control for my needs. Here's what I need suggestions for:

- PC fan controller with sensors that I can set temperatures to trigger fans with. Controllable temperatures need to start at minimum of 24 degrees Celcius (not 50+ like most of controllers I can see around in shops). Lower temps would be nice, but not mandatory. Does such a thing exist?

- PC fans with highest real life CFM and up to 160mm in size. I am after highest possible volumes of air shifted. Noise is of no concern, I have enough soundproofing material and experience to box them up and lower down the noise with insulation, no concerns about negative pressures etc, but I want as much air out in as short time as pos. That's where you guys come in - your real life experience with cooling down overclocked systems is of essence.

And of course this has to be sort of readily available items, no point of designing anything around industrial spec Sanyo Denki or Papst fans at £50-80 each, because three or four of these and it would be cheaper to design this system around proper pumps like TD Silent etc.

Take it away overclockers. :)
 
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Lamptron FC5 v2 if you can, Personally dont trust touch screens and it has what your after

as for fans im not the best person to ask
 
Sythe GT 5400 are strong I have them for PWM fans when I am using LN2. Very noisy though but if that's not an issue then they are great.
 
wrong place to ask tbh, as a keen gardener, I use a thermostat plug, ( ie it plugs in and has a socket on it) readily available from the rainforest for 10-20 squid. I'd then plug in a conventional extractor fan, the more expensive ones even have speed control, as they come in at 30cm + they will massively out do a computer fan as regards to shifting air, at a MUCH lower speed. I use mine for keeping my greenhouse frost free in the winter, I plug in 2 x panel radiators, the sort that are 2p a day to run, I plug both of them into an extension and then the extension into the thermostat plug, works a treat, the thermostat is powered by the mains too so no batteries. By the time you've rigged up a psu and all the fan controller gubbins, major undertaking and so much that can fail! Keep it simple and it works!!! Good luck.
linky to one at random : they don't sell any computer stuff so hope this ok? http://www.tlc-direct.co.uk/Products/SMET05.html?source=adwords&kw=&gclid=CMygh-HC67kCFebJtAodr3gA9g

or just stick in thermostat plug into google, plenty of results.
 
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Something Else said:
Bitfenix recon or aqauero might work if you can set custom limits.

these fans may work but watch out for the amount of watts used in the scythe one!
(...)
Click to expand...

Bitfenix Recon claims "alarm preset" temps starting from 30, so not much use, but the Aquaero rendered me speechless. If I understand correctly, I can set any fan profile "curve" for any of the fans and can mix and match sensor values, so - 0rpm/off at up until 20C degrees from average of all temp sensors, two fans on low spin at 22C, everything full blast at 24C etc etc. That looks exactly what I was after! Expensive, but looks properly customisable. Unless there is some trickiness, like it won't work stand alone without PC software after initial setup or something.

Also, thanks for the fan suggestions, Scythe Gentle Typhoon - how real are these CFM numbers, if the flow and pressure actually gets anywhere near the numbers manufacturer quotes that fan should literally hover its own weights worth above table when switched on while flat?

murah said:
Lamptron FC5 v2 if you can, Personally dont trust touch screens and it has what your after
Click to expand...

Not quite clear from manufacturer page whether it allows me to preset RPM to temp values (so fan is idle up to certain temp, then kicks in at low speed, then eventually full speed if certain temp is reached).

Madwelsh said:
wrong place to ask tbh, as a keen gardener, I use a thermostat plug, ( ie it plugs in and has a socket on it) readily available from the rainforest for 10-20 squid. I'd then plug in a conventional extractor fan, the more expensive ones even have speed control, as they come in at 30cm + they will massively out do a computer fan as regards to shifting air, at a MUCH lower speed.
Click to expand...

I thought about it originally, but encountered few issues and qui pro quo's

- Although common sense would dictate otherwise, the CFM values actually look poorer for stand alone extractors, best 230V bathroom fans run 50-90 m3/h at full roaring blast, Scythe Gentle Typhoon claims 98 m³/h @ 1850rpm with comfortable 28 dBA and 255 m³/h @ 5400rpm. On paper high rpm setting on Scythe should be shifting as much air as proper Ruck/RVK centrifugal.

- Temp sensor would be always positioned next to wherever plug is (in my case next to window otherwise would have to run extensions next to self watering systems etc) rather than where I need it/want it.

- My garden studio has wood cladding inside. If I wanted the system to be permanent, it would be easier for me to pry couple of them by few mm close to ceiling and run three small 12V cables than duct 0.75 flat two core on the outside.

Although admittedly, it might be the fastest solution
 
Gentle typhoons are great when there is little/no static resistance and are indeed very quiet.

It does seem a bit overkill. If you wanted to make it even more difficult for yourself you could dig a large hole inside the studio and fill it full of water - given that water takes longer to heat up than pretty much anything; which will make the temperature changes between night and day (and with a large enough body of water winter and summer) much less than they would be otherwise.
 
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