Fin Tubes----Finned Tubes and Their Application in the Tubular Heat Exchanger
The structural characteristics of finned tube and method of manufacture
There are many kinds of finned tubes. As the finned tube materials, carbon steel, copper, aluminum, stainless steel, as well as composite materials, such as steel-aluminum, the base tube is made of steel, while aluminum fins; from about fin type, a ring fin, vertical fin, spiral fin; finned tube can be either in the inside or outside of the tube, but outside fins are in majorious; From manufacturing methods, which can be the integrity rolling, also can be welded, casting. Various industries due to their different characteristics, they demand to use different types and materials finned tubes.
Shell and tube heat exchanger finned tubes used in multi-threaded and low-fin tubes, main materials include carbon steel, copper and copper alloys, Mainly use whole manufacturing process rolling method. This tube is a periodic variable section pipe. Determine the geometric parameters sectional shape fin diameter, fin root diameter, pipe wall thickness, pitch, fin height, thickness and thickness of the top fin roots.
The structure features,manufacture and reinforced heat exchange mechanism of finned tubes are
introduced Especially the low finned tubes used in tubular heat exchanger are described.Application results and points for
attention are given in great detail. Some points possess guiding effect for using the low screwy finned tubes correctly.
Key Words: Fin tubes, Finned tubes,Reinforced heat exchange ,Tubular heat exchanger.