I agree with Freeze. Need more info.
Me for example.. I have a tent in a small room that gets it's air from a seperate room called a lung room. I keep a window unit running 24/7 in the lung room with a heater in the tent. My dehumidifier also hangs out in there also. The AC helps combat the heat produced by the dehuey. The heater in the tent keeps my temps right where I want them.
Exhausting the dehumidifier out of the room would be sending the dry air outside which would accomplish nothing for you. You'll need to find a way to bring cool air in to bring the temps down or move the dehuey to your lung room if you have one.