I don't want a short tube with the lights very close to the plants all the time, but during the last week of flower, we come a lot closer with our cobs to drive production. Heat will be produced there no matter how well you thermally insulate and vent the light modules. Was thinking of using the glass pane from an outdoor security lamp as the face to my light module, I want the active bits insulated and temperature controlled, so I don't have to vent as much air to deal with this.
I want to be able to emulate this. The tubes can be standing where ever, indoor, outdoor, doesn't really matter. The goal is to be able to grow weed using a portion of the power that would normally be wasted running HID to run cooling at the expense of the immediate surroundings EVEN WHEN IT WOULD OTHERWISE NOT BE FEASIBLE DUE TO CLIMATE EXTREMES. The more I work with the design the more things change. If a component is active in thermal management, it needs to be insulated way from dumping any heat into or taking any coolness out that is not a part of its design function. Chillers will also remove humidity out of the air. they frost over in no time flat under no load.
A big change I made today, is to not try to cool a large volume of air and then pumping it out the other side a second later.
The chillers will now still have fans, but will have nothing to do with the incoming air for venting as required. Venting more air is seldomly the solution or answer to any growing issue.
The smart grower will vent the minimum amount he can get away with while still supplying adequate CO2 for the light levels employed and controlling humidity