Intake/exhaust same window?

[967]

So now i'm not allowed to cut a hole in the ceiling.. was wondering if its possible to have intake and exhaust using the same window?

Attached is a diagram showing what i'm thinking. If your peoples opinions, would this work very well at all? Or just asking for problems?

Window itself would be covered in black plastic (curtains closed), with the ducts connected to the plastic so as not to be visible from the outside..

 

[967]

I guess actually if i moved the intake up right by the top open window it might be better? Just thought bottom for intake as heat rises so bottom air is bound to be fresher

I can't boards these windows up as that would be obvious. So to some degree the exhaust air will have to mix with the fresh intake air...

 

[Nosmo King]

You can do intake and exhaust stealthily in one window

I used a window fan with adjustable louvres...I took it apart the front had the wings and the back part had the motors and switches

I put black mesh inside the front shell and attached brackets for the hoses

 

[967]

Would rather not use a window fan as there would then be a fan in the window. I want the room to look as it does now, normal with windows open and curtains closed

I thought maybe if i pinned the curtain and plastic to the wood between each window, it would create a sort of "seal" to separate the two? Wouldn't be 100% effective, but probably much better than nothing

thoughts?

 

[Granger2]

What's weird about having fans in windows? Why is that suspicious? I'd put a fan in one window for intake, and another in the other for exhaust. Good luck. -granger

 

[967]

Landlord lives next door and while they don't do inspections, they might ask questions. Especially with curtains closed 24/7

 

[greenmatter]

Landlord lives next door ...... 24/7

tagged

nothing is impossible brother ........ you've obviously got balls

why can't you put a hole in the ceiling? having to fix a hole sounds like it would simplify your life in a lot of ways

 

[Jnugg]

Piece of plywood over the curtains and window.Poly will flap around in wind making noise.

All you have to do is plaster over the holes where screws attached the wood to the wall/window and no one would ever know.

 

[967]

tagged

nothing is impossible brother ........ you've obviously got balls

why can't you put a hole in the ceiling? having to fix a hole sounds like it would simplify your life in a lot of ways

Honestly I know it sounds dodgy but its not. They're pretty laid back, treat it as your own type landlords. They've had their fair share of bad tenants over the years, gang members and drug dealers etc so they're just happy we're quiet and the rent gets paid. Been growing 600W for pushing 2 years now no problem

Just looking to expand. Flatmate who's name the house in doesn't want a hole in the ceiling. Looking at moving but I'll never find another landlord like this. There are a couple of other options. One is exhaust through wardrobe which already has a hole in it, the other is install heat transfer system throughout house which calls for a hole in the ceiling..

As for the plywood over window that would squash the curtain making it look a bit odd would it not?

Haven't given up on the idea just yet. Just trying to work it so everyone is happy. Leaning towards wardrobe idea now as that would eliminate the perpetualness of the cycle I had intended. Though I would need more wattage to grow the same amount. Thinking 3x600W, no veg room just veg and flower under the same 600's. 3 months later I should be harvesting 3lb, which is the same amount I would be getting off 2x600's and a 250w perpetual grow. and would look a shitload better if I get busted with 12 plants the same age than 32 all at different levels of maturity

Only problem I can see with that idea is I would need to run ducting from the ceiling down to wardrobe height and out. which would be 2 - 3 meters of ducting with some bends in it. Would that be terribly inefficient?
Would 300 cfm adequately cool 1100 cu. Ft with 3x600's? I know its not optimal air flow but neither is my setup now which does just fine..

Thoughts?

 

[967]

What if I had an open duct with axial fan directing warm air towards wardrobe, which had the 300cfm fan and filter exhausting straight up (no bends) through wardrobe ceiling?

 

[LeeROI]

Maybe your flatmate will accept a damage deposit.

I just read your last post--wardrobe holes are what I did so I didn't disturb an "acoustic" ceiling.

 

[cody2white]

To bad you cant just put a a/c in the window and call it a day.

 

[967]

The main problem is we have textured ceilings. If I put a hole in it I'll never get it fixed properly it will look as though someone put a hole there then half-assed fixed it. I could look at portable ac, but does that help with air exchamge ? Sorry don't know how they work. What sort of running costs are involved?

 

[967]

I could always just wing it I suppose. If my temps and rh are too high, get a bigger fan for next cycle. When I started out I was under the impression air exchange once every 5 minutes was enough. Now people are preaching twice a minute..

Would I likely be OK with exchanging air every 4mins? Setting aside temp and humidity, is that enough fresh co2 for 1800w of growing?

 

[LeeROI]

CO2 is the least of your problems.

 

[967]

Well it is winter, temps outside won't get much above 50f. I currently cool a 600w with a pussy 120? Cfm bathroom fan, connected to filter, which exhausts from 4x4 tent into main room tent is in, temps are fine even in summer (with windows open and door ajar)

Can't be much worse than that?

Such a large room only 3 lights I would think temp would be no problem? Maybe humidity instead?
Our house has no insulation in the walls. That must make a pretty big difference regarding temps? Overnight could run a heater and put fan on a timer?

Is there anyone out there that thinks this could work? Won't bother if not. Don't have the coin to spend on bigger fan/ac unit at the moment. Would do after first grow but I need to guarantee myself 2 1/2lb with the equipment I've got

 

[LeeROI]

I still don't really understand the first post--how can you have an open window and not be conspicuous.

Anyway, portable AC is very inefficient, especially the single hose models. I don't know where you are but I was thinking humidity when I said CO2 is not the limiting factor.

You can rent equipment to respray an acoustic ceiling (but it's gone out of style).

 

[967]

Ok scratch that window idea, i can intake and exhaust out wardrobe
What i'm wondering is if i would be able grow semi-successfully (12oz+ per light) with 3 x 600W lights in an 1100 cu. ft room, using only a 300cfm fan for exhaust?

Temps should not be a problem as its winter. (could run one light in 4x4 box when other two are off to help night time temps). Humidity could be a problem but i have dehumidifier..

Basically the question pertains to the amount of light, size of space and rating of fan. Would it work?