This disclosure describes, in part, systems and structures for an exhaust assembly that includes an exhaust tube and an insulation structure surrounding the exhaust tube. The insulation structure is offset from the exhaust tube to create an air gap around the exhaust tube and the insulation structure. The air gap is used to transport forced air by a fan system to mitigate and remove heat from the exhaust tube to a disposal location. The insulation structure includes an inner shell and an outer shell that contain an insulation component to provide a reduced surface temperature during steady state operation within a threshold range.

An exhaust muffler comprises a hollow body and an exhaust pipe disposed at least partially within the hollow body. The hollow body defines a first set of apertures on the hollow body and the exhaust pipe defines a second set of apertures and a third set of apertures on the exhaust pipe. The exhaust pipe has an inner surface and an outer surface. The inner surface defines a primary exhaust gas flow path (P). At least one divider allows the exhaust pipe to pass therethrough, and divides the hollow body into a first chamber and a second chamber. The first chamber defines a reservoir fluidly associated with the primary exhaust gas flow path (P) via the second set of apertures, and to the environment via the first set of apertures. The second chamber is fluidly associated with the primary exhaust gas flow path (P) via the third set of apertures.