Impact effusion cooled shingle of a gas turbine combustion chamber with elongated effusion bore holes

摘要

The chamber (15) has a combustion chamber wall that includes a tile carrier. The wall tiles are mounted on the tile carrier at a distance to form an impingement cooling gap, where the tile carrier has impingement cooling holes. The tile is provided with effusion holes, where tile has a surface structure on side of tile that faces the tile carrier, and the surface structure raise from the surface of the tile, and extends in the direction of the tile carrier. An inlet opening is located on a raised portion of the surface structure.