Hi all,
I am looking for some feedback regarding a sealed system design preferably from people who are experienced in this area...
I have an internal space of which I can fit an insulated and air tight sealed 8m x 6.5m x 2.5 high box within of which is a floor space of 52 square metres or 130 cubic metres
I have been in contact with an air conditioning guy that I know well for him to do a calculation based on 42 x 600W lights of which will be pretty much bang on 1 x 600W per square metre of grow area. He has calculated that a 130K BTU or 10.83 tons. He is currently designing an air sock of which will go round the outside of the top of the box and snake across the top also.
The ballasts will be digital and sit on top of the box roof and there will be 3 x thermostats of which will break the coils of the contactors should the temperature exceed 32 degrees centigrade
The lights will be fixed to 7 x steel catenary wires of which will be fixed at 1.5m from the floor each catenary wire will contain 6 x 600W lights
The floor of the box will have a huge pond liner on it of which will contain as many plants as possible (autos) as a sea of green in 10L pots using coco. They will be bottom flooded (I have tried this technique a few times and it works very well) The mix will be pumped in from outside the box
So the lights will be fixed at 1.5m of which will give me a 1m space above...
Within this 1m space there will be the air cons internal box of which the air socks come out of and 3 x 12" fans with 1m carbon filters to scrub the air and force the air around
On the ground level around the big pond liner there will be lots of oscillating fans
On the ground level at around canopy height I will have 2 x 120L a day dehumidifiers and a large humidifier all with there own humidity stats
As for the co2 I am planning on having 4 x 32kg canisters each with there own regulator being controlled by one controller (outside) with a Solid State NDIR sensor at around canopy height. Each regulator will deliver 17 litres of co2 a minute so will total 68 litres a minute. I am planning on putting the 4 x evenly spaced co2 pipes above the lights so the co2 falls and is then forced around by the fans.
Ideally I want to be able to change the 4 x 32kg co2 cylinders once a month and am planning on getting 8 of them so when they run out I can put 4 new ones on as I get the other 4 refilled. Does anyone have any idea how long the co2 might last?
I have a device I have made of which I am testing now that sends me an sms (text) message if the ppms exceed 1500ppms or drop below 800ppms. This should mean when the co2 runs out I will know about it...
Because I am doing autos the lights will be on 18 or 20 hours per 24 from start to finish.
If I put the split seeds straight into the 10L coco pots as I have done before I am not sure if they will be able to take this level of potential punishment in a closed environment?
I am hoping to run it at 1300ppms of co2 from start to finish? Or should I lower the ppms at the start?
any advice welcomed!
Thanks
I am looking for some feedback regarding a sealed system design preferably from people who are experienced in this area...
I have an internal space of which I can fit an insulated and air tight sealed 8m x 6.5m x 2.5 high box within of which is a floor space of 52 square metres or 130 cubic metres
I have been in contact with an air conditioning guy that I know well for him to do a calculation based on 42 x 600W lights of which will be pretty much bang on 1 x 600W per square metre of grow area. He has calculated that a 130K BTU or 10.83 tons. He is currently designing an air sock of which will go round the outside of the top of the box and snake across the top also.
The ballasts will be digital and sit on top of the box roof and there will be 3 x thermostats of which will break the coils of the contactors should the temperature exceed 32 degrees centigrade
The lights will be fixed to 7 x steel catenary wires of which will be fixed at 1.5m from the floor each catenary wire will contain 6 x 600W lights
The floor of the box will have a huge pond liner on it of which will contain as many plants as possible (autos) as a sea of green in 10L pots using coco. They will be bottom flooded (I have tried this technique a few times and it works very well) The mix will be pumped in from outside the box
So the lights will be fixed at 1.5m of which will give me a 1m space above...
Within this 1m space there will be the air cons internal box of which the air socks come out of and 3 x 12" fans with 1m carbon filters to scrub the air and force the air around
On the ground level around the big pond liner there will be lots of oscillating fans
On the ground level at around canopy height I will have 2 x 120L a day dehumidifiers and a large humidifier all with there own humidity stats
As for the co2 I am planning on having 4 x 32kg canisters each with there own regulator being controlled by one controller (outside) with a Solid State NDIR sensor at around canopy height. Each regulator will deliver 17 litres of co2 a minute so will total 68 litres a minute. I am planning on putting the 4 x evenly spaced co2 pipes above the lights so the co2 falls and is then forced around by the fans.
Ideally I want to be able to change the 4 x 32kg co2 cylinders once a month and am planning on getting 8 of them so when they run out I can put 4 new ones on as I get the other 4 refilled. Does anyone have any idea how long the co2 might last?
I have a device I have made of which I am testing now that sends me an sms (text) message if the ppms exceed 1500ppms or drop below 800ppms. This should mean when the co2 runs out I will know about it...
Because I am doing autos the lights will be on 18 or 20 hours per 24 from start to finish.
If I put the split seeds straight into the 10L coco pots as I have done before I am not sure if they will be able to take this level of potential punishment in a closed environment?
I am hoping to run it at 1300ppms of co2 from start to finish? Or should I lower the ppms at the start?
any advice welcomed!
Thanks
