Heat transfer area of finned tube radiator reasonable area of base pipe total surface area of exposed part of plate fin type.
Finned tube radiator is a kind of heat transfer components. In order to improve the heat exchange efficiency, fins are usually added on the surface of the heat exchange tube to expand the total surface area (or inner area) of the heat exchange tube, so as to improve the heat exchange efficiency.
Spiral
Finned tube Radiator can be manufactured in a variety of ways. At present, the key manufacturing methods of finned tube radiator for heating furnace, high-pressure vessel and other thermal equipment are as follows: high frequency resistance welder spiral finned tube radiator, fiber welding spiral finned tube radiator and overall spiral finned tube radiator. The manufacturing method, characteristic evaluation method, application of spiral finned tube radiator and the advantages of total spiral finned tube radiator are explained in detail.
Development materials:
Current situation of production technology
Suit plate wing
The processing technology of suit plate fin type is to produce a batch of separate plate fin type with high-speed punch in advance, and then use manual service or mechanical equipment to suit the plate fin type on the surface of water pipe according to a certain distance (wing distance) by interference. It is the first way to produce and process finned tube radiator. Because the suit processing technology is simple, the technical standard is not high, the commonly used machinery and equipment are of high quality, low price, and easy to repair, so many processing plants are still choosing. This process is a labor-intensive process planning scheme, which is suitable for the assets and technical standards of small processing plants or small and medium-sized enterprises.
Manual service is called handmade suit. It relies on special tools, with the help of human energy to press the fins one by one. Due to the limited pressing force of plate fin type, the interference of suit is small, and plate fin type is very easy to cause looseness.
The mechanical equipment suit plate wing type is carried out in the plate wing suit machine. Because the plate wing press in is based on the impact force or liquid pressure of mechanical equipment, the pressure is large, so a large interference can be selected. The fusion compressive strength of plate wing type and water pipe is high, and it is not easy to loose. Gear driven suit machine has high production efficiency, but it has high noise, poor safety coefficient and poor worker standard. Although there are no difficulties in hydraulic transmission system, the price of machine and equipment is too expensive, the technical standards for the application and maintenance personnel are high, and the production efficiency is lower.
