PRESSURIZATION AIR CONDITIONING ARRANGEMENT

Disclosed is a pressurization air conditioning arrangement, the arrangement having: a turbine (76) including a housing (87) and a rotor (80) within the housing, wherein the rotor is a dual scroll and including an inner shroud (86) separating a first set of rotor blades from a second set of rotor blades; a diffuser (78) extending from an exhaust of the turbine; and an exhaust shroud (106) within the diffuser, the exhaust shroud dividing the diffuser into an inner diffuser passage (108) and an outer diffuser passage (112).