They are 38 watts each, it's the "Arlec 250mm White Exhaust Fan" .
What kind of power usage on the bathroom exhaust fans?
If you have enough air being pushed out of an area, you don't really need fans for instake anyway as it will be pulled in naturally. (That's how my setup is)
I've seen his youtube videos, if we're talking about the same guy. Rigs in wooden boxes on the enclosed porch? You're right. Seems like he's doing very well even in the humid weather down there.
Two ton hasher did a great job in that video so much so that i thought i'd take it to a slightly larger/more permanent scale being in a similar climate for almost half of the year here.
I'm in Australia and getting daily external temps of 25-40degC, and humidity from 60% up to 95%. I previously had 6 x 6card rigs in my double garage and the ambient temperature was always sitting around 40-50degC even after i put in an extraction fan in the roof to get the heat out over the eve. My wife hated the garage that hot so i built a shed in the back yard that is only 3m x 2m x 3m high that i thought was going to have been a waste of money with the first cooling iteration, i had only put in a wall extraction fan that did ~160m2/hr.
Next attempt i built a bulkhead about 400mm square against the back wall of the shed across the entire length and put 2 x 250mm 320m2/hr bathroom exhaust fans(with room for at least 2 more) in the underneath of the bulkhead and at either end of the bulkhead on the outside i put 100x200mm vents for the hot air to evacuate.
There are 3 air intake vents 100x200mm on the lower front of the shed that originally i put box fans in front of to blow the cool incoming air at the rigs however i have now removed them to do a test to see if the air would flow naturally in the vent and out the exhaust without extra fans and the internal temp has dropped ~5degC.
I have thermal sensors on the intake, outtake and middle racks of the shed and I am averaging 15degC difference on the incoming temps to the outgoing temps. There is very little noise from these exhaust fans, now i have no idea how long they will last being on 24/7 so time will tell but i'm happy to replace $20 ceiling exhaust fans every few months than deal with loud commercial fans.
So far i think heat is under control so time to add a few more rigs and see
If you have enough air being pushed out of an area, you don't really need fans for instake anyway as it will be pulled in naturally. (That's how my setup is)
The guy in florida, two ton hasher, does great stuff on his porch, if youve got a porch to do it i'd go with that.
I've seen his youtube videos, if we're talking about the same guy. Rigs in wooden boxes on the enclosed porch? You're right. Seems like he's doing very well even in the humid weather down there.
Two ton hasher did a great job in that video so much so that i thought i'd take it to a slightly larger/more permanent scale being in a similar climate for almost half of the year here.
I'm in Australia and getting daily external temps of 25-40degC, and humidity from 60% up to 95%. I previously had 6 x 6card rigs in my double garage and the ambient temperature was always sitting around 40-50degC even after i put in an extraction fan in the roof to get the heat out over the eve. My wife hated the garage that hot so i built a shed in the back yard that is only 3m x 2m x 3m high that i thought was going to have been a waste of money with the first cooling iteration, i had only put in a wall extraction fan that did ~160m2/hr.
Next attempt i built a bulkhead about 400mm square against the back wall of the shed across the entire length and put 2 x 250mm 320m2/hr bathroom exhaust fans(with room for at least 2 more) in the underneath of the bulkhead and at either end of the bulkhead on the outside i put 100x200mm vents for the hot air to evacuate.
There are 3 air intake vents 100x200mm on the lower front of the shed that originally i put box fans in front of to blow the cool incoming air at the rigs however i have now removed them to do a test to see if the air would flow naturally in the vent and out the exhaust without extra fans and the internal temp has dropped ~5degC.
I have thermal sensors on the intake, outtake and middle racks of the shed and I am averaging 15degC difference on the incoming temps to the outgoing temps. There is very little noise from these exhaust fans, now i have no idea how long they will last being on 24/7 so time will tell but i'm happy to replace $20 ceiling exhaust fans every few months than deal with loud commercial fans.
So far i think heat is under control so time to add a few more rigs and see