Rectangular finned tubes are a type of heat exchanger component designed to enhance the heat transfer between a hot fluid and a colder fluid. Unlike regular tubes, these finned tubes have fins attached to increase the surface area, thereby improving the overall heat exchange rate. The rectangular shape offers a larger surface area compared to spiral or helical fin designs, making them ideal for specific applications, particularly those involving dust-laden exhaust gases.
Rectangular finned tubes typically consist of a base tube made from materials like carbon steel, stainless steel, or copper. The fins, often made from the same or compatible materials, are welded onto the base tube. The design may vary, with some tubes featuring single or twin rectangular fins, often referred to as "double H" finned tubes. This configuration is especially beneficial in economizers and waste heat recovery systems.
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