RADIANT TUBE WITH DEPRESSION ON EXTERNAL SURFACE AND MANUFACTURING METHOD THEREOF

摘要

PURPOSE: A radiation pipe having cathode surface projections and a manufacturing method thereof are provided to improve thermal efficiency by increasing the surface area of the radiation pipe through cathode surface projections on the lower portion of the pipe. CONSTITUTION: A radiation pipe(100) comprises two or more straight pipe portions(110), a bent pipe portion(120), a plurality of cathode surface projections(130). The bent pipe portion connects the plurality of straight pipe portions. The plurality of cathode surface projections is formed in the lower peripheral surface and increase surface area.