Multi-shelled chimney

摘要

The chimney has a round inner pipe (2) which is surrounded by a heat-insulating layer (4) which is adjoined on the outside by a casing (6). Flow ducts (20) running in each case from the bottom to the top are present on either side of the corner regions (8), the ducts being separated from one another in the corner regions (8) in each case by a wall part (18). <IMAGE>