[77newell]

I assume that running will be almost exclusively at idle. I would buy silicone coated ducting used around aircraft engines to run from the exhaust pipe about 4ft to a piece of pvc thin wall pipe laid temporarily on the floor when exhaust is needed. Run the pipe to near an outside wall or door. Install a pipe connection through the door with enough pipe on the inside to connect another piece of silicone coated ducting that connects to the pvc pipe. Clamps using cam action versus screw clamps would speed up the process of connecting and disconnecting.

Just the rambling thoughts of a deranged mind currently "improved" with a migraine.