Ozmosis
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Hi
I have a ducting question for the HVAC gurus out there. I have a spider farmer 55 x 28 x 80 tent. I am ventilating with an AC Infinity 4" duct fan with carbon filter and using the tent vents for passive intake to the tent. The exit goes through 8 ft of 4" duct and out the window through a screened 4" vent. I know I am nearing the limit with the 4" fan in that setup but would like to squeeze a bit more performance out of it if I can. Right now with an AC controlling the room at 71 degrees I can hit 80 -82 deg F in the tent mid day with the fan controller set at 7 out of 10. You can really hear the restriction at the 4" exit screen so I am not sure if I am even getting any more airflow turning the speed up further due to the back pressure.
I know flex ducting has a lot of restriction and then the screened vent cuts the exit surface area. My question is if I used a 4" to 6" adapter coming off the infinity fan and then ran the exit though 6" flex ducting and a 6" screened vent would I get a reasonable increase in air flow? I know the CFM flow through the ducting would likely decrease but I assume total airflow would go up with less restriction in the exit ducting. Any thoughts on this?
I have a ducting question for the HVAC gurus out there. I have a spider farmer 55 x 28 x 80 tent. I am ventilating with an AC Infinity 4" duct fan with carbon filter and using the tent vents for passive intake to the tent. The exit goes through 8 ft of 4" duct and out the window through a screened 4" vent. I know I am nearing the limit with the 4" fan in that setup but would like to squeeze a bit more performance out of it if I can. Right now with an AC controlling the room at 71 degrees I can hit 80 -82 deg F in the tent mid day with the fan controller set at 7 out of 10. You can really hear the restriction at the 4" exit screen so I am not sure if I am even getting any more airflow turning the speed up further due to the back pressure.
I know flex ducting has a lot of restriction and then the screened vent cuts the exit surface area. My question is if I used a 4" to 6" adapter coming off the infinity fan and then ran the exit though 6" flex ducting and a 6" screened vent would I get a reasonable increase in air flow? I know the CFM flow through the ducting would likely decrease but I assume total airflow would go up with less restriction in the exit ducting. Any thoughts on this?