On a hot-air test bed in the engines-laboratory at the Technical University of Dresden, an experimental investigation of the cooling effectivity of effusion-cooling elements for the cooling of power plant combustion chambers was carried out. The work was carried out within the framework of a BMFT-project (Federal Ministry for Research and Technology project) on reducing the damaging materials in aviation. This cooling method can also be used at stationary gas turbine combustion chambers. The results of the investigations include a calculation model, based on the Reynolds analogy between material and heat transfer, which allows parameter studies for outlining effusion-cooled elements. Besides information regarding the dimensioning the cooling air quantity required and the temperatures of structural members, the thermic loads expected can be determined with the aid of an FE-calculation.