FIELD: power-plant engineering. SUBSTANCE: component 1 of heat shield through which pressure cooling medium passes has hot gas wall 2 to be cooled down, inlet passage 3 for cooling medium 4 and outlet passage 5 for cooling medium 4; inlet passage 3 is directed towards hot wall 2 and is expanded in direction of hot gas wall 2. Heat shield 20 forms lining of component through which hot gas flows, hot gas of combustion chamber of gas-turbine plant 10 in particular; heat shield has many components 1 through which pressure cooling medium passes. EFFECT: reduced losses of cooling medium. 16 cl, 4 dwg
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