Gas turbine and method for guiding compressed fluid in a gas turbine

Gas turbine (100) comprising a combustion chamber (101) with an exhaust section (102) through which a combustion gas (103) is exhausted, a plenum chamber (104) and a compressor (105) for generating a compressed fluid (106). The plenum chamber (104) is coupled to the compressor (105) such that a first quantity (107) of the compressed fluid (106) is injected into the plenum chamber (104) at a radially inner wall (111) of the plenum chamber (104). The gas turbine (100) further comprises a guide vane section (113) with at least one airfoil (114), wherein the guide vane section (113) is coupled to the exhaust section (102) such that the combustion gas (103) flows against the airfoil (114). The exhaust section (102) and the guide vane section (113) are housed inside the plenum chamber (104). The airfoil (114) comprises a first flow chamber (201) which is formed such that a second quantity (108) of the compressed fluid (106) flows through the guide vane section (113) from the compressor (105) in the direction from the radially inner wall (111) to a radially outer wall (112) of the plenum chamber (104) before being discharged into the plenum chamber (104). The second quantity (108) of compressed fluid (106) which streams through the guide vane section (113) is larger than the first quantity (107) of the compressed fluid (106).