Air-cooling question???

[jtreezy420]

is it better to start with a bigger intake, or finish your ventilation with a bigger exhaust.

so my ?, start with 8" intake and finish with 2 6" exhausts

-or-

start with the 2 6" intakes and finish with 8"?

(i have two 6" centifug fans that will be used 400cfm's)

any feelings RIU?

also, what do you think of usin just the air from under the house, which is lifted upon a cement block foundation, for coolin the lights?


thanks

PLEASE POST OPINIONS!!

 

[trichlone fiend]

is it better to start with a bigger intake, or finish your ventilation with a bigger exhaust.

so my ?, start with 8" intake and finish with 2 6" exhausts

-or-

start with the 2 6" intakes and finish with 8"?

(i have two 6" centifug fans that will be used 400cfm's)

any feelings RIU?

also, what do you think of usin just the air from under the house, which is lifted upon a cement block foundation, for coolin the lights?


thanks

PLEASE POST OPINIONS!!

...what ever diameter the hole is on your fan, go with that size throughout if possible, IMO. I find my fan keeps things alot cooler by sucking the air through the lights rather then pushing the air through them. ....the crawlspace is an awesome place to pull air !

 

[jtreezy420]

...what ever diameter the hole is on your fan, go with that size throughout if possible, IMO. I find my fan keeps things alot cooler by sucking the air through the lights rather then pushing the air through them. ....the crawlspace is an awesome place to pull air !

sorry shoulda clarified, not just one light, 2 runs, of 3 lights, total 6. changes in diameter of ventilation r efficent, i think, just need verification on which way is best.

and for the crawl space air, can i send hot air down there too? i def will pull air outta it, but not sure what im gonna do with all the hot air??

 

[Cheese doctor]

you always want to be taking out more than whats goin in otherwise youll get a build up of positive pressure, smell etc.