streamlining your ventilation system
“ In most indoor gardens , the lighting system creates a lot of excess heat that needs to be addressed .”
Lighting System
In most indoor gardens , the lighting system creates a lot of excess heat that needs to be addressed . This is why it is so important to consider the lighting equipment when figuring out the required cooling load . After a grower determines the required BTU based on the cubic feet of the garden space , he or she can determine the additional BTUs that will be needed to offset the heat created by the garden ’ s lighting equipment . A good rule of thumb for finding this value is to multiply the total lighting wattage by 3.5 . For example , if a grower has 10,000 watts of lighting equipment , he or she will need an additional 35,000 BTUs ( 10,000 x 3.5 = 35,000 ) on top of the BTUs required for the size of the garden space .
Ballasts
The ballast ( s ) used in the lighting system also need to be considered when sizing cooling equipment . If a grower uses a remote ballast , which operates at a distance from the lamp itself and removes the ballasts from the actual growroom , no further cooling loads within the garden space will be required . However , if the ballasts remain in the same space as the garden , they will need to be added to the calculation when determining the required BTUs for cooling . The best rule of thumb for ballasts is to multiply the total wattage by 2.5 . This number will be added to the required BTUs for the room size and the required BTUs for lighting equipment . For example , if a grower has 10,000 watts of lighting equipment and is operating the ballast within the growing space , he or she will need an additional 25,000 BTUs of cooling ( 10,000 x 2.5 = 25,000 ).
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