Patent ID: 6668540
Filing Date: 2003-12-30
Classification: F01D,F01N,F02C

Abstract:
A gas turbine exhaust passage having an outer peripheral wall for defining an exhaust passage for discharging exhaust gas of a gas turbine, comprising an exhaust duct provided with an exhaust silencer therein and an exhaust passage connected to the exhaust duct, wherein the outer peripheral wall of the exhaust passage has a structure having no gas permeability and acoustic transmissivity, at least a portion of the outer peripheral wall of the exhaust passage is formed of an acoustically transmissive material for allowing a low frequency noise of several tens of Hz or less to pass therethrough sufficiently, wherein said portion of the outer peripheral wall is porous from its inner-most portion to its outer-most portion, and a rack is provided to surround and support said exhaust passage.