Both single-metal finned tubes and bimetallic finned tubes are finned tube types, which are distinguished below.
Finned tubes, also known as heat dissipation tubes, are divided into single-metal finned tubes and bimetallic finned tubes. Single metal finned tube is rolled from aluminum tube as a whole, called aluminum rolled finned tube, no contact thermal resistance, high strength, heat and mechanical vibration, good thermal expansion performance, and has a considerable expansion heat transfer surface. The heat exchanger, which is controlled by this fin, is more effective than a serial or winding heat exchanger and is a widely used heat exchanger.
Single-metal finned tubes can also be rolled by direct rolling of steel tubes or by copper tubes. Bimetallic composite finned tubes are divided into steel and aluminum composite finned tubes and copper and aluminum composite finned tubes. Steel and aluminum composite finned tubes are made up of (steel tubes, aluminum pipe; or stainless steel pipe, aluminum pipe) after compounding and then rolling out the fins, copper and aluminum composite finned tube by (copper pipe, aluminum tube) after the composite and then rolled out fins, with tight bonding, small thermal resistance, good heat transfer performance, high strength, small flow loss, strong anti-corrosion performance, in the long-term hot and cold conditions are not
Long working life and other advantages. Overall rolling fins without burrs, no wrinkles, easy to clean, in the heating and air conditioning project wet cooling easy to eliminate the outer surface of the fin condensate, in the drying heating and other heat exchange occasions are not easy to dust, scaling.
