SnapsProvolone
Well-Known Member
Drpends on temperature of air used to cool them. I figure 1000 btu per light is removed, not that its a fixed figure, so many variables.
7000 sq ft warehouse
- Thread starter jaybray
- Start date
UncleBuck
Well-Known Member
down the duct and out of the room if you're doing it right.
joe macclennan
Well-Known Member
very true. I am thinking of putting in a water cooled heat exchanger on my outside air intake for summer. Especially when temps exceed 90. Use a thermostatically controlled solenoid for water flow.
50 degree intake air seems to be just about right. It cools several hoods in series very well without condensing on the hoods.
SnapsProvolone
Well-Known Member
Seeing that hvac will have to dehumidify, heat from lights is akin to energizing a heatstrip on an airhandler coil to prevent freezeups when dehuing only. Watts are watts, may as well get light from them. I say skip aircooling hoods.
joe macclennan
Well-Known Member
hmmm, well. Agree to disagree then. I've seen 7k of lights aircooled on a 250w 8" 750cfm fan very well.....even in the summer. Now there is maintenance keeping the glass clean and such. and on a grow of this scale.......
MisterBlah
Well-Known Member
And this is where it comes full circle though. You are still cooling the intake air.
joe macclennan
Well-Known Member
dtw well water though...... and only when temps require
doesn't get much cheaper
doesn't get much cheaper
MisterBlah
Well-Known Member
Regardless, if he is using a Gavita, the point we are arguing is probably best suited for another thread.
SnapsProvolone
Well-Known Member
Thing is your not going to save a full 30 tons of aircon since the air has to come from somewhere. Losses in light via lens at 10% also factor it as well as added labor in bulb changes and glass cleaning, intake filter changes. Im saying keep the 10% of lumens and don't worry about the 30 tons of aircon, just pay the bill. 
MisterBlah
Well-Known Member
Not every location has that luxury. But yes, you are right, doesn't get much cheaper. Your heat exchanger will corrode at a much faster rate though.
joe macclennan
Well-Known Member
you guys really think plasma compares to hid?
I've never seen them in person
I've never seen them in person
MisterBlah
Well-Known Member
This is my opinion as well.Thing is your not going to save a full 30 tons of aircon since the air has to come from somewhere. Losses in light via lens at 10% also factor it as well as added labor in bulb changes and glass cleaning, intake filter changes. Im saying keep the 10% of lumens and don't worry about the 30 tons of aircon, just pay the bill.
MisterBlah
Well-Known Member
What? Who brought that up?
SnapsProvolone
Well-Known Member
Right now HPS is the gold standard still. That should change in the nect ten years. CMH, LED, Plasma something will advance past HPS but I'm not seeing it yet.
joe macclennan
Well-Known Member
and that's the other side of the coin for sure. i wouldn't want to be a glass cleaner every dayThing is your not going to save a full 30 tons of aircon since the air has to come from somewhere. Losses in light via lens at 10% also factor it as well as added labor in bulb changes and glass cleaning, intake filter changes. Im saying keep the 10% of lumens and don't worry about the 30 tons of aircon, just pay the bill.
very true
Just so you guys know I'm not putting these things forth as absolute truths. Just my take on things. I greatly value your opinions and am always open to other ideas
MisterBlah
Well-Known Member
LEDs are the way of the future.
joe macclennan
Well-Known Member
gavitas are plasma no?
MisterBlah
Well-Known Member
Gavitas use a double ended High Pressure Sodium vapor lamp.
I am going to go with vertical 48'' parabolic if I don't get gravitas. Correct me if I am wrong but that is what you were recommending.
SnapsProvolone
Well-Known Member
No not recommending anything of the sort.