Fire tube construction for boiler, has multiple bodies arranged in fire tube-internal space, where each body exhibits secondary radiation surface for radiating internal surface of fire tube-housing with secondary radiation

摘要

The construction has a fire tube (3) with a fire tube-housing (3a) that extends in an axial direction (A), where a fire tube-internal space (3d) is surrounded by the fire tube-housing. A burner connection (3b) connects a burner (2) for liquid, gaseous or atomized solid fuels. Multiple bodies (15) are arranged in the fire tube-internal space, where the bodies are made of a heat-resistant material. Each body exhibits a secondary radiation surface (15a) for radiating an internal surface (3e) of the fire tube-housing with secondary radiation (IR). An independent claim is also included for a method for manufacturing a fire tube construction.