HVAC requirements for sealing room using Quantum boards?

With 1kw DEs the typical rule of thumb is 5k btu per light. If your running dehuey and co2 burner then it goes to 6k btu per light.

With LEDs like 288 boards what is the typical rule of thumb for sizing HVAC? I would have a room with 58x 240w lights so 13920w total LED lighting.

Looks like I would need right at 48k btu to cool a room with 14k watts of led

i would think you need more than a 5 ton. i put a 3 ton in my veg with 6 320 watt fixtures. and it’s overkill but that’s only 1900 watts

That is correct if you only have the boards inside the room, if you also have the drivers you will need to add the efficiency and power factor.
3.412 x (13920w /driver efficiency/power factor)

Sinfor said:

That is correct if you only have the boards inside the room, if you also have the drivers you will need to add the efficiency and power factor.
3.412 x (13920w /driver efficiency/power factor)

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thanks for the help man so: 13920/.92/.95 (at 230v) = 15926w total watts in LED lights. this doesnt include the wattage that the fans 10 or so wall fans dump into the room (55w ea x 10 = additional 550w) = 15926+550=16476

thats 56,216.112 btu's to cool this room with LED (1x 48kbtu mini split 4000w + 1 12k btu mini split 1000w) 5000w total ac. this comes to 21500w total for the whole room including ac at 240v ill be using 90 amps draw in a 100a sub panel. that wont give me 20% head room and probably wont be safe.

if i tried to seal room 1 now with 16x 1kw DE's (1200w on boost/.96/.9=1275w x 16=20400+550=20950 total = 71480btu thats a 48k unit and a 24k unit. 6000w plus 20950w = 26960w total if i kept the DE's so 112a total draw @ 240v

Dont forget you'll want to run the rooms a bit hotter around 82-84f so you need less cooling generally to maintain that.

Generally LEDs dont that much cooler then aircooled hoods in my experience because there is nothing wicking/pulling the heat away like aircooled hoods did, so I would still stick to the 3k-5k BTU for efficient cooling, as yes LEDs run cooler then non aircooled hoods, but they aren't some magic light that produces no heat

I don't have air cooled hoods I have DEs right now. but if LED perform like air cooled hoods then that a giant leap forward compared to DE's

temps of the 320 watts. i believe my 1k bars run around 115-120 degrees

I run 22 lights (650w x 22 = 14300w) on a 5 ton, can't get bellow 25c, but set it to 28c without any issue

canope said:

I run 22 lights (650w x 22 = 14300w) on a 5 ton, can't get bellow 25c, but set it to 28c without any issue

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ill be running 19x 600w in a 4 ton room. lets hope its enough lol. by my calcs it should be. 600w/.94/.96=664w
664x19=12616w x3.42 = 43146 btu

p0opstlnksal0t said:

ill be running 19x 650w in a 4 ton room. lets hope its enough lol

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Can you raise/lower these lights? Cause a low hung strip/bar light doesnt really need 650w per 4x4, 500ish is enough. That would lower your total wattage a couple 1000w and also importantly your sinks will be a bit colder.

Rocket Soul said:

Can you raise/lower these lights? Cause a low hung strip/bar light doesnt really need 650w per 4x4, 500ish is enough. That would lower your total wattage a couple 1000w and also importantly your sinks will be a bit colder.

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im sure i can build something to raise/lower the lights. although i certainly dont plan on using those cheap light ratchet cords, that would be a nightmare