VENT OR COOL?

Soft Secrets
23 Apr 2011

I am planning to build a room with eight 1000 watt high pressure sodium (HPS) lights. I plan on growing 20 plants on a rotating basis so I will harvest a plant every three days. If I use air-cooled lights, with fans taking the air out, will that be enough to cool the grow area? I will be venting air in from the outside.


I am planning to build a room with eight 1000 watt high pressure sodium (HPS) lights. I plan on growing 20 plants on a rotating basis so I will harvest a plant every three days. If I use air-cooled lights, with fans taking the air out, will that be enough to cool the grow area? I will be venting air in from the outside.

I am planning to build a room with eight 1000 watt high pressure sodium (HPS) lights. I plan on growing 20 plants on a rotating basis so I will harvest a plant every three days. If I use air-cooled lights, with fans taking the air out, will that be enough to cool the grow area? I will be venting air in from the outside.
Willy

The lamps will contribute a total of between 500 and 1000 BTU's per lamp, depending on the characteristics of the reflector. I don't think you should use vented air to adjust the temperature in the garden because the outdoor temperature varies too much. It is hot in the summer and cold in the winter. When the outside air is warm it takes a lot of ventilation to cool the space. When it climbs above 270 C it won't do much to cool the room. In the winter the air is very cold and should be mixed with warmer air before it enters the garden space.
Instead of ventilating the room, a better solution is to control the room temperature using an air conditioner to cool the room, and the heat from a CO2 generator controlled by a thermostat to warm it. When it is warm outside and there is no need for heat, use a CO2 tank to supply the space with CO2.

 

S
Soft Secrets