The cheaper option I've found outside of PC fans is this. Would it work?Hi.
I'm planning a decently small microcab around 1.5 sqft and 10-15 ft3. It'll only contain at most 90w of LED light and in my opinion not need a lot of ventilation. My trouble is that I don't know how to size up the exhaust right, or rather what the best type of fan would be. I was planning on a DIY scrubber like the ones seen on the forums, 4"x12" (equivalent to a Can 33). If I've run the numbers right it'd require about 30cfm for a 10ft3 cab, and I'm a cheapskate.
What would be a good fan? Am I right in thinking that way oversizing the carbon scrubber would allow me some headroom in the static pressure requirements of the fan? I don't live in the US and the cheapest "proper" inline fan (S&P TD-160/100 N SILENT) is around 100$ without a speed controller.
Help.
Are you using it for recirc or exhaust?Any suggestions for a fan (exhaust) that does 1600 cfm and is fairly quite? I need it for a small greenhouse
I use just one 8” vortex fan in a 5x9 gorilla tent with two se 1000w ac reflectors no problem. Outside temps are 70F and inside the tent the temp is 74F. I have my fan/ducting setup different than you but probably doesn’t matter too much. The 8” fan is probably what’s key. And if the 8” fan moves too much air, you can always get a speedster to slow it down, although I’ve never done it.
My duct system goes:
duct intake—> air cooled hood —> air cooled hood —> out of tent —> 8” fan —> carbon scrubber
The scrubber still works the same blowing into it, and allows me to use a bigger scrubber and have more room in the tent.
My intake inside the tent to the duct system is at the top of the tent in the front middle, opposite the screened intakes, where you would normally mount to scrubber. I’m not sucking in air directly into the far air cooled hood, if that makes sense.
I’m also able to exhaust in my attic. So as soon as the duct comes out the top of the tent, it goes into the attic where the fan and scrubber is. So I’m not recycling air and have to worry about CO2. If you do exhaust in your attic make sure you have good air flow in the attic so you don’t get mold. My attic is huge, has plenty of openings for air exchange, and I check it regularly.
then i have ducting from outside the tent --> 6 inch inline fan --> ducting--> air cooled hood --> ducting --> air cooled hood --> ducting out the other side and down into the rear of the air conditioner the other exhaust on the back of the air conditioner ( i believe its 12k btu's --> window and outdoors
Never try to vent hot air DOWN. It's lighter than cold air and wants to rise.
Totally not sure that you are trying to do that, but if you are, a huge part of your problems lie there.
heres a few pics of the rigged box i made an cut out a 6 inch hole to make it air sealed to run the ducting to the bottom of the tent. There was too much air entering faster than leaving so i cut a few holes in the ducting to release some of the air pressure. As you can see my tent is currently looking like the marshmallow man https://www.icmag.com/ic/attachment...nt.php?attachmentid=488245&stc=1&d=1552433935
Good night, and thank you for all the information here...
Can someone help me out what would be the best option, for a green qube gq100 the size of it is 1x1x2 grow tent. I'm going to use led in screw so the heat shouldn't be a major issue.
I saw here in the forum people using a single S&P TD160/100 N SILENT In-Line Duct Fan with a can filter of the same size 4... with very good results....
Is that a good bet or should I buy a Ruck fan, acoustic ducting, a filter with the the same size of the extractor... If i understood correctly the out-take should be the double of the intake so if there's only a small pc fan working in the intake the extractor and filter can be from the same size?
The other option i saw was to use carbo air 50 filter kits with rvk fan and if it makes noise, i would have to buy a fan controller or a silencer.
After reading these threat there are even other option to pick like having a intake fan (Axial, metal blades), filter, and the double size extractor fan with other carbon filter attached.
What would be the best option please, im pretty sure that exist even others but my know how is very limited... Sorry for so many questions and for any bad English... Any help would be very appreciated, kind regards to all peace and love all