The Generator-Line Enclosure Exhaust System
Has anyone used the Generator-Line Enclosure Exhaust System to create an Venturi type stack? The EUX2 at $179.00 seems a little pricy for what you get, but the concept looks interesting. I run...
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If that shroud also captures the air from the cooling fan, then it is likely that the resulting mixture of air won't be hot enough to melt a plastic pipe.
If you go with any variation of the GenTuri or Mike's version, then that metal piping could still get quite hot since only the exhaust gases will be in the initial piping section, and no cooling air will be mixed in until you get to the venturi opening at the plastic pipe.
Holding your hand a few inches from the exhaust allows a lot of ambient air to mix with the hot exhaust to cool it down. Even under the vinyl cover, the exhaust and cooling air probably blew the cover far enough away from the exhaust to allow some mixing and cooling.
If you run the generator under load for a while, and then touch the actual metal of the exhaust pipe (that little bit of metal tube showing through the plastic casing) I'll bet you'll find it quite hot. Any metal exhaust piping connected directly to that output with no additional cooling air is likely to get just as hot. The little Honda's don't put out huge amounts of heat, but the exhaust heat is still concentrated on that little output. If the muffler wasn't shrouded by the plastic casing, I'm sure you wouldn't want to touch it directly.
Given that the exhaust is at such an exposed location, and easy to accidentally contact, maybe your best bet is to use this shroud you found. That's assuming that it does indeed mix in the cooling air from the engine fan. It would be easy to route that flex hose section back to the camper body, and then run up from there with rigid plastic.
If you go with any variation of the GenTuri or Mike's version, then that metal piping could still get quite hot since only the exhaust gases will be in the initial piping section, and no cooling air will be mixed in until you get to the venturi opening at the plastic pipe.
Holding your hand a few inches from the exhaust allows a lot of ambient air to mix with the hot exhaust to cool it down. Even under the vinyl cover, the exhaust and cooling air probably blew the cover far enough away from the exhaust to allow some mixing and cooling.
If you run the generator under load for a while, and then touch the actual metal of the exhaust pipe (that little bit of metal tube showing through the plastic casing) I'll bet you'll find it quite hot. Any metal exhaust piping connected directly to that output with no additional cooling air is likely to get just as hot. The little Honda's don't put out huge amounts of heat, but the exhaust heat is still concentrated on that little output. If the muffler wasn't shrouded by the plastic casing, I'm sure you wouldn't want to touch it directly.
Given that the exhaust is at such an exposed location, and easy to accidentally contact, maybe your best bet is to use this shroud you found. That's assuming that it does indeed mix in the cooling air from the engine fan. It would be easy to route that flex hose section back to the camper body, and then run up from there with rigid plastic.
