Input on Co2/HVAC/Dehu

[Boomer22]

So I’m in the middle of my first build ever and at the moment trying figure out my HVAC/Co2/Dehu needs. I definitely want to have the appropriate equipment to control my environment and I would love some input from you guys.

So the room dimensions are 17’x17’x 9.5’ and planning on it being sealed with Co2. Running 9 x 650w LED.

I guess it’s best to figure out everything else first and then the HVAC. So first the Co2, When I run a calculator at my dimensions it says that to achieve 1500 ppm I would need to run a Titan Ares4 for 18 min at 11 feet per hour. Is that a crazy amount of time to run the generator? Or do I need to up the number of burners to shorten my run time... also upping the btu output?

 

[kingromano]

So I’m in the middle of my first build ever and at the moment trying figure out my HVAC/Co2/Dehu needs. I definitely want to have the appropriate equipment to control my environment and I would love some input from you guys.

So the room dimensions are 17’x17’x 9.5’ and planning on it being sealed with Co2. Running 9 x 650w LED.

I guess it’s best to figure out everything else first and then the HVAC. So first the Co2, When I run a calculator at my dimensions it says that to achieve 1500 ppm I would need to run a Titan Ares4 for 18 min at 11 feet per hour. Is that a crazy amount of time to run the generator? Or do I need to up the number of burners to shorten my run time... also upping the btu output?

it calculate the total time to fill the room from 400ppm to 1500ppm. normal it takes 18 minutes

after filling room 1st time you will turn on/off the generator to fluctuate between 1000 and 1200 ppm, so short shots will do the trick

do you already have the generator ? you better run a pilot flame type generator in this room

for the AC it depends of your climate. if it's hot you may need 2x 5kW ( better than just 1x 10kw)
if one fail you can finish the round on kneecaps

 

[Boomer22]

So it’s not saying that it’s going to run 18 min every hour? That would be a good thing if it didn’t.. I do not have a generator yet, the only line I have looked at is the Titan line, but I’m open to anything. Some of the calculations I have done on my hvac requirements come in really high, like 45k+ btu. I’m hoping to keep it under 36k btu so that I can run a DIY Mr Cool. Anything above that size jumps in price significantly, and having 2 different units take up amperage which I only have so much of.

 

[westcoast420]

Get an actual co2 controller not a timer, then you know how much co2 is in the room and can dial in the burner or valve. Burner will add heat to the room where as bottles dont. Im not familiar with leds but you need to know how many btus your lights put off.

 

[kingromano]

these electic ignitions burners are gadgets, believe my experience ... get a model with a pilot flame

bottle co2 is a waste of money

and please avoid DIY AC's, get a good split

 

[westcoast420]

these electic ignitions burners are gadgets, believe my experience ... get a mode with a pilot flame

bottle co2 is a waste of money

and please avoid DIY AC's, get a good split

Why is bottle co2 "a waste of money"? lol

 

[Boomer22]

Get an actual co2 controller not a timer, then you know how much co2 is in the room and can dial in the burner or valve. Burner will add heat to the room where as bottles dont. Im not familiar with leds but you need to know how many btus your lights put off.

probably go trolmaster controller and lights produce 19,948 btu

 

[Boomer22]

these electic ignitions burners are gadgets, believe my experience ... get a model with a pilot flame

bottle co2 is a waste of money

and please avoid DIY AC's, get a good split

I’m looking for a pilot flame model now. Also looking at different mini splits, hoping I can find someone reasonable to do the install

 

[Mullumbimby]

Thia is an interesting subject but I'm totally phased by your imperial measurements. Cubic feet and BTUs etc.
If you're running 5.8Kw of lights and a CO2 generator (apparently rated by BTUs), how do you calculate how many BTUs (or tons) of cooling you need?
Also, when you use BTUs, to describe the heat output of a generator, is that BTUs per minute, per hour or what?
(I just read the Wikipedia entry for BTU - what a dog's breakfast that is)

 

[Apalchen]

The 36k mini split should be fine, I use the 36k btu mr cool diy unit to cool 6- double ended hps at 1150 watts so 6900 watts. It does barely keep up with my lights but your heat load should be less and temps will be run higher since your doing led. I do use bottled c02, and I would definitely not consider it a waste of money.

 

[Mullumbimby]

The 36k mini split should be fine, I use the 36k btu mr cool diy unit to cool 6- double ended hps at 1150 watts so 6900 watts.

There you go. I just converted 36,000 BTUs/hour to Watts and it came out at 10,550W
I'd be pretty sure you're not using a 10KW air conditioner, since that's about as big as a split system comes and would be drawing almost 3Kw at the wall - nearly half as much as your lights.