Balancing heat and air exchange with night-time temperatures...

Cold$moke

Cold$moke

Well-Known Member
HydroRed said:
Youre probably going to see a huge reduction in usage for hvac. After insulating fully, I went from 12K btu AC unit running hard almost constantly, to 5K btu on med during the hottest summer days and never getting above 80*F. Big difference.
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Thats my last environmental issue i have is getting a co2 meter to see if the exchanges are enough without supplemental co2.

Sucks drawing in cold air it cools the room so fast i hope they get enough co2

But i want to build an led before i buy a co2 set up lol
 
Cold$moke

Cold$moke

Well-Known Member
Beings that i built the building im growing in i even caulked all the seems in the stud work :) so im sealed and ready for co2 just havent got there yet lol
 
SchmoeJoe

SchmoeJoe

Well-Known Member
ShLUbY said:
yeah i have a separate veg tent.
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Look up lung room design. Basically you can set up an intake/exhaust that cycles air between your flowering and veg space. It's a convenient way to keep your night temps up in flowering and cool your veg space at the same time.
 
SchmoeJoe

SchmoeJoe

Well-Known Member
ShLUbY said:
that's what i think he was getting at ;) . I'd just be concerned with cross contamination. say i get PM in my veg side for whatever reason, i don't want to be dumping that air into my flower room too... know what i mean?
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In line hepa filter would take care of that.

Edit; as long as you have your temp and rh in line you shouldn't ever have to worry about mold of any kind indoor. Mites are a whole other thing but I'd imagine they aren't too much of a thing in your climate.
 
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Cold$moke

Cold$moke

Well-Known Member
SchmoeJoe said:
Look up lung room design. Basically you can set up an intake/exhaust that cycles air between your flowering and veg space. It's a convenient way to keep your night temps up in flowering and cool your veg space at the same time.
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I originally built a lung room but when the cold is so cold you just create a cold ass veg room

It sounds better then it works if that makes sense

My 8 x12 shed/cabin. Is 8x8 for flower and a 4x8 veg and entry area. The 4x8 does not generate enough heat to use as a lung room in my experience unless you got at least a 600w in. There
 
whitebb2727

whitebb2727

Well-Known Member
Use water to transport heat from the veg room.

Insulate and seal the rooms up is the best thing to do. You would be surprised what a few gallons of water can do. Slow or stop the exhaust and the room might hold heat the whole off time.

Ttystick water cooled all his lights and the warm water was sent to a system the was connected to the rest of the house. Pretty cool.

It always seemed crazy that ac and heat could both be needed. It makes sense to put the excess heat to work.

On a tangent I've been thinking about putting in a geothermal unit.
 
SchmoeJoe

SchmoeJoe

Well-Known Member
When the
Cold$moke said:
I originally built a lung room but when the cold is so cold you just create a cold ass veg room

It sounds better then it works if that makes sense

My 8 x12 shed/cabin. Is 8x8 for flower and a 4x8 veg and entry area. The 4x8 does not generate enough heat to use as a lung room in my experience unless you got at least a 600w in. There
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I do most of my veg under t5's but when the winter kicks in I put up a couple of 1,000 watt metal halides. I also run my flowering room at night.
 
SchmoeJoe

SchmoeJoe

Well-Known Member
whitebb2727 said:
Use water to transport heat from the veg room.

Insulate and seal the rooms up is the best thing to do. You would be surprised what a few gallons of water can do. Slow or stop the exhaust and the room might hold heat the whole off time.

Ttystick water cooled all his lights and the warm water was sent to a system the was connected to the rest of the house. Pretty cool.

It always seemed crazy that ac and heat could both be needed. It makes sense to put the excess heat to work.

On a tangent I've been thinking about putting in a geothermal unit.
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Check out the GAHT (Ground to Air Heat Transfer) systems from Ceres and EZ Grow greenhouse companies.
 
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