You seem to have all the needed parts.
Originally Posted by bombdiggity
Do you not have a place to dump the heat/stale air?
It appears that you are recirculating within the closet. That can be tricky if all the exchange of air is to take place through that partially opened door. If this is the case, there being no true outlet, then I would have a fan up high to direct the warmer air out at the top of the open door.
Another issue may be pushing through that filter. The "pre-filter" wrap isn't helping in this configuration. If you must blow-through the carbon filter then you absolutely want to remove the pre-filter. Also, if you want to avoid choking off the flow through that filter, you should install some type of filter, before the main carbon filter. Otherwise, the Carbon filter will collect dust inside, killing air-flow.
The simple way to fix this, and this is just a seat-of-the-pants suggestion based on what I see.
Mount the carbon filter up at the top of the tent. Pulling through the filter and cool-tube, to the fan, then, from the fan outlet, aim your duct to blow out the top of the door opening. btw: In this configuration, the pre-filter wrap will actually do something useful.
This shouldn't be too hard to iron out. How important is stealth?
I can picture in my mind a world without war, a world without hate. And I can picture us attacking that world, because they'd never expect it
- Jack Handey