The bimetal finned tube is formed by cold rolling of the base tube (such as steel tube, copper tube) and aluminum tube on the finned tube machine, also known as steel (copper) aluminum composite finned tube or rolled tube. It overcomes the disadvantage that aluminum and other metals can not be welded, and highlights the technological characteristics of the two materials by making use of the pressure resistance of the base tube and the high efficiency heat transfer and plasticity of aluminum. It has the unparalleled advantages of other types of finned tubes.
Lightweight: Aluminum is the smallest proportion of common non-ferrous and ferrous metals, light metal fin material determines the use of its heat exchanger with light weight characteristics.
High heat transfer performance: the thermal conductivity of aluminum is about 211.9W/m. K, lower cost and higher cost performance than silver and copper. Objects with good thermal conductivity tend to absorb heat quickly and dissipate heat quickly.
The air resistance is small: the finned surface of the bimetal finned tube is smooth without wrinkles. Air can be easily penetrated from the fin spacing.
Low contact thermal resistance: Practice has proved that the contact thermal resistance of bimetal finned tube in the working environment below 210 degrees is almost zero. Low contact thermal resistance is the guarantee of high efficiency heat transfer.
The heat dissipation area is large: the fin to tube ratio of bimetallic fins can reach up to 22.7. The heat dissipation area of the unit is much larger than that of the conventional winding tube.
Long service life: bimetal finned tube in the process of processing, the base tube and aluminum fin close composite integration. A 0.5mm-thick cladding layer is formed on the surface of the base pipe to protect the base pipe from contact with ambient air, which can improve the service life.
Bimetallic finned tube is also difficult to deposit and is not easy to scale. It is easy to clean and remove surface water, has good resistance to temperature changes, and can maintain good heat transfer performance for a long time.辛苦整理.转载请注明http://www.wxsxsjx.com
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