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Use of finned tube radiator

Release time:

Jul 04,2023

Fins are installed on the heat exchange tubes to increase the heat dissipation area of the cold heat exchanger, which can be summarized as "finned tube radiator". Finned tube radiators can be divided into wound type, tandem type, welded type, and rolled type according to the structure of the fins. Commonly used materials are steel, stainless steel, copper, aluminum, etc.

Fins are installed on the heat exchange tubes to increase the heat dissipation area of the cold heat exchanger, which can be summarized as "finned tube radiator". Finned tube radiators can be divided into wound type, tandem type, welded type, and rolled type according to the structure of the fins. Commonly used materials are steel, stainless steel, copper, aluminum, etc.

finned tube radiator uses:

Fin-type radiators are currently widely used in steel-aluminum finned tubes (wound steel-aluminum composite finned tubes, rolled steel-aluminum composite finned tubes), which use the pressure resistance of steel pipes and the effect of aluminum Thermal conductivity is compounded on a special machine tool. The thermal contact resistance is almost zero at 210°C.

Finned tube radiators are generally used for heating or cooling air, and have the characteristics of compact structure and large unit heat exchange area. Widely used in textile, printing and dyeing, petroleum, chemical, drying, electric power and other fields.

Focus on hot spots

Characteristics and application fields of high frequency welding finned tube radiator

The base tube and the fin are firmly welded, the contact thermal resistance is small, the sheet distance is uniform, the wrinkle is small, it is not easy to accumulate dust, and the heat exchange efficiency is greatly improved. It is widely used in the waste heat recovery of heating furnaces, boilers, kilns, hot air furnaces and drying towers. Compared with traditional wound-tube air coolers, the outstanding advantages of high-frequency welded finned tube radiators are large heat dissipation area and cooling capacity. High, low air resistance, and its performance remains basically unchanged with the increase of service life.

How to buy SRZ finned tube radiator

The base tube of the traditional SRZ finned tube radiator is generally Φ 21*2 stainless steel or carbon steel tube, the height of the strip steel used for winding the sheet is 15mm, and the sheet distance is 5-8mm. The thickness of the sheet is generally 0.23-0.38mm.

Advantages of spiral high frequency welding finned tube

As a commonly used heat exchange element, high frequency welding finned tube needs to work for a long time under high temperature flue gas environment. For example, finned tubes used in boiler heat exchangers are used in harsh environments, high temperature and pressure, and corrosive environments. High-frequency welded finned tubes should have high-performance indicators, mainly including: corrosion resistance, wear resistance, low contact thermal resistance, high stability and anti-fouling ability.

Advantages of finned tube radiators

The finned tube radiator is not easy to ash. The cause of dust accumulation is the Karman vortex gap. Ash deposition will affect the flow of steam in the pipeline, and then affect the heat transfer efficiency of steam. After hot-dip galvanizing, the gap of the heat pipe is reduced, and it is not easy to form a dust accumulation angle, which affects the heat transfer efficiency. The integral finned tube radiator has stable performance and long service life. The thermal test has stable heat transfer performance and is suitable for various drying chambers and large and medium heating systems. The heat transfer efficiency is high, the corrosion resistance of the entire hot-dip galvanized layer is improved, and the service life is extended.

How to choose the material of finned tube radiator

The choice of finned tube radiator material determines the life of the heat exchanger and the cost of the equipment. When we choose the material according to the working conditions, we can choose the radiator with high cost performance, thereby reducing the production cost of the enterprise.