bradburry
Well-Known Member
Will this 100 m³/h 4" inline fan work for a 600 w hps in a cooltube ?
http://ebay.eu/1w0gGIt
if no what m³/h do i need
http://ebay.eu/1w0gGIt
if no what m³/h do i need
QUICK FAN QUESTION....
- Thread starter bradburry
- Start date
GrowHydro2193
Member
That's pretty weak...maybe 150-200 will work
ttystikk
Well-Known Member
The best way to set this kind of thing up is to use the power of the heat generated by the lamp itself to ventilate; turn the exhaust end up for at least a foot or two if you can, then it will pull some fresh air through whether the fan runs or not. Great safety feature.
bradburry
Well-Known Member
you mean with the hot air rising .. Good tip.
but how will i know if my fans strong enough at 100 m³/h
ttystikk
Well-Known Member
If it holds your temps stable.
bradburry
Well-Known Member
what im trying to ask is .....will my fan be strong enough
JoeyV
Well-Known Member
You might want to be careful of what materials the fan is made from. If you're 'pulling' hot air through the fan, plastics might heat up and emit various toxic gasses, or might melt altogether. If you're 'pushing' air into the cool tube you should be ok since you're not dealing with the heated air.
bradburry
Well-Known Member
good point ...the fans designed to pull air .....its made of plastic but im going to check the max air temp.
SnapsProvolone
Well-Known Member
That's about 58cfm. Not gonna do it. Probably not even centrifugal. 3 to 4x what you specced depending on duct length and bends
SnapsProvolone
Well-Known Member
Note a carbon filter kills cfm
bradburry
Well-Known Member
im confused now ....whats cfm ?
SnapsProvolone
Well-Known Member
You use m3/hr where I'm used to cubic feet per minute. Just a unit change to make it something I'm familiar with. 
bradburry
Well-Known Member
so i want about 200 m³/h for one 600 watt hps ....even when the temps going to be about 10-15°cYou use m3/hr where I'm used to cubic feet per minute. Just a unit change to make it something I'm familiar with.
SnapsProvolone
Well-Known Member
Cooling your light with outdoor air can cause condensation, not good.
bradburry
Well-Known Member
ok....i thought it was hot on cold to condense.
i can always take air from another room ...that' no problem