Thanks for great responses. Incredible that higher humidity lowers the cooling cost! Also 1000l reservoir WOW i feel so proud i can pull a few lbs from a grow lol. In theory my take is your style IS optimal but much harder for most to do successfully. Kudos!
I’m not sure it reduces the cost of cooling. I’m not really sure on the science of how it works.
I just know from experience with low humidity my room has a temp spike above the canopy and ac units clock on constantly and when humidity is high the temperature above canopy and all corners of the room are within 1c difference
I know plants are technically living breathing evaporative coolers and when they respire they cool the air by creating water vapour.
since my Lights put off an insane amount of heat in a small area even with extremely high negative pressure airflow across the canopy hotspots occur causing temp spikes above the canopy and id have an ac unit away from the canopy set at say 30c and the canopy spikes to 35c.
but having more water content in the air means that the air between the lights and the canopy requires more energy to heat up by 1c as water can absorb a lot of energy before it reaches 1c compared to normal atmospheric gas.
so this makes it so my air above canopy is now 30c and where my ac units are at 30c
