A few Lung Room questions???

[kowhite]

So....a few question concerning how to optimize the airflow from your lung room throughout the rest of the rooms of the grow. I have a 15' x 12' x 8' room that will be separated into three rooms. A veg room...9' x 5', a flowering room...6' x 12' and a lung room...9' x 7'. What I envision is one fan blowing fresh air from lung to flower, another blowing air from flower to veg, and a third blowing from veg back to lung. My first question, is this an efficient way to circulate fresh cool air through my rooms? Second, if so I should be able to put controllers in each room that prompt the air control to kick in with the necessary corrections from the lung room, right? Third, granted that first to questions received favorable answers, say given that the fresh air has to flow through the flowering room to get to the veg room...if the veg room needed to be cooled and the controller activated the AC in order to do so, would the cooler air flowing through the flower room (which at the time was not too warm) on it way to the veg room make it too cold in the flower room perhaps damaging the flowers in the process? Should I maybe reverse the flow with cooler air going into the veg room first? Should I just completely rethink my airflow situation?

I plan on installing a ductless AC unit that is rated to cover 400 sq ft to control the temperature...which brings to mind the flip side of the coin and makes me wonder about the same problem with heat. Anyway enough questions for now, thanks in advance to anyone who decides to bless me with some solid info.

Peace

 

[heady blunts]

hey kW!

first off i think if your rooms' orientation allows, both veg and flower rooms should be drawing from the lung, not from eachother.

also, this might just be semantics, but you'll be "pulling" from the lung into the rooms, the fans will be "blowing" from the rooms into the lung. in-line fans are more efficient at pulling air against negative pressure than they are at pushing air against positive pressure.

if you focus on dialing in the environment of your lung room you won't need to modulate fan speed in the rooms themselves. an ideal number that DHF often recommends is 2x air exchange per minute for the rooms, so size your fans accordingly. i get more like 1.5 exchanges a minute, and it still works---but i sacrifice a few degrees fahrenheit of efficiency.

think of it like this: with my air exchange the 10'x10' flower room running 3600w on 6 gavita de lamps is usually around 13*f above the ambient temp (in my case, the temp of the lung room). if i were doing 2x exchange i'd probably only be 9 or 10 degrees above.

it creates a pretty serious breeze in my room so make sure you account for how you place your intakes if you're working with any windburn sensitive varieties. i only have a few plants that really get pissy about it.

you should rate your AC for how many BTUs all your lamps and ballasts and various gizmos will put off in heat. sqft ratings are pretty a pretty general guide and intended for a room with a couple people and a tv and a lamp not so much for a ton of horticultural equipment.

there's a whole thread devoted to figuring out your equipment's combined total BTUs and how to get an AC accordingly, but you'll probably need several tons of cooling power to have complete, year-round control.

our 3600w flower and 1200w veg room would love a 5 ton mini split in the lung. mini splits are far more efficient than portables so you're on the right track looking at those ductless units.

how many total watts would you like to be running? how often will you have yourself and others in the room? human bodies create a substantial amount of heat. how about other equipment? a computer, humidifier, pumps, etc.

psyched on the progress you're making!

 

[kowhite]

Yeah man this is the old post of my original idea...

Thanks for the help again too bro! Super satisfied with how the design turned out...fits everything in so much more efficiently.