Structure principle of finned tube radiator
All cold and heat exchangers with fins on the heat exchange tubes to increase the heat dissipation area can be summarized as "finned tube radiators".
Finned tube radiator can be divided into winding type, string type, welding type and coil type according to the structure form of fins. Commonly used materials are steel, stainless steel, copper, aluminum and so on.
Use of finned tube radiator
At present, the most widely used fin radiator is steel-aluminum finned tube (wound steel-aluminum composite finned tube and rolled steel-aluminum composite finned tube), which is compounded on a special machine tool by using the pressure resistance of steel tube and the high thermal conductivity of aluminum. Its contact thermal resistance is almost zero at 2 10℃.
Finned tube radiator is generally used for heating or cooling air, which has compact structure,
Large unit heat exchange area and the like. Widely used in textile, printing and dyeing, petroleum, chemical industry, drying, electric power and other fields. Finned tube radiator price
Fin condenser evaporator radiator ￥ 188.00.
Air-cooled 60 module fin heat exchanger radiator ￥2500.00.
Specification for finned tube radiators
The specifications of finned tube radiator are: 4 minutes, 6 minutes, 1 inch, 1/2 inch, 2/2 inch, 3 inch, 4 inch, etc. Can also be customized.
Standard for finned tube radiators
As for the standard of wall thickness, JGJ25-95, the standard for energy-saving design of civil buildings (using residential buildings), clearly stipulates that the industry standard of household finned tube radiator requires wall thickness of 15mm, with a negative difference of 0.05 mm At present, there are three main wall thicknesses on the market, one is ultra-thin10 mm, and the other is national standard/kloc-0. The wall thickness of finned tube radiator is the decisive factor to determine the service life of household finned tube radiator, but it is by no means the only factor.
According to the standard of internal anti-corrosion coating, which is also the standard of JGJ25-95 for energy-saving design of civil buildings (using residential buildings), it is clearly stipulated that the internal anti-corrosion coating of household finned tube radiator must adopt six steps, such as acid selection, phosphating, passivation, neutralization and surface adjustment. At present, the internal treatment of finned tube radiator is divided into 4-8 steps.