Its primary function is to increase heat dissipation. We all know that the size of the heating area of the radiator depends partly on its contact area with the air, and the larger the contact area, the more you can help the radiator warm more air. So many copper-aluminum composite radiator ends, back, buckle cap, will be designed on some wings.
It achieves the purpose of enhancing heat transfer by adding fins to the ordinary base tube. The base pipe can be made of steel pipe; Stainless steel pipe; Copper pipe, etc. The fins can also be made of steel belts; Stainless steel belt, copper belt, aluminum belt, etc.
In terms of economic requirements, the less metal consumption required for the unit heat transmitted to the room by the finned radiator, the lower the cost, and the better the economy. The metal thermal strength of finned radiator is a sign to measure the economy of radiator. The metal thermal strength refers to the difference between the average temperature of the heat medium in the radiator and the indoor air temperature of 1℃. The amount of heat per kilogram mass radiator per unit time. This index can be used as an indicator to measure the economy of the same material radiator. For various finned radiators of different materials, the economic evaluation standard should be measured by the cost of heat dissipation per unit of the radiator (yuan /w).
3. Installation, use and process requirements finned radiator should have a certain mechanical strength and bearing capacity; The structure form should be easy to combine into the required heat dissipation area, the structure size should be small, less room area and space, and the production process of the finned radiator should meet the requirements of mass production.
4. Sanitary and aesthetic requirements, smooth appearance, no dust accumulation and easy to clean, finned radiator installation should not affect the look and feel of the room.
5. The requirements of service life, fin radiator should not be easy to be corroded and damaged, long service life.
Finned radiator is the most widely used heat exchanger in gas and liquid heat exchangers. The machine equipment parts are used to reduce the heat generated during the operation of the equipment, so that the mechanical equipment parts are cooled to increase the mechanical operation life. Therefore, the quality of the radiator directly affects the life of the running mechanical equipment components.
Finned radiator is a new type of heat sink with high efficiency, energy saving and environmental protection. It uses fins instead of traditional heat dissipation fins, which ensures the heat dissipation performance and has certain energy saving effect. Therefore, finned radiators have been widely used in air conditioning, refrigeration, heating and ventilation fields.
Finned radiator is composed of fins and heat dissipation pipe, according to the working principle is divided into: pressure type and shell type. Press-mounted means that the fin is pressed on the heat dissipation pipe so that it forms an integral structure with the heat dissipation pipe; The shell type refers to the fins welded directly with the heat dissipating pipe.
Fins are usually used to increase the heat exchange surface area of the heat exchange device by adding a metal sheet with strong thermal conductivity on the surface of the heat exchange device that requires heat transfer.
Finned radiator is short for finned tube radiator, which is mainly made of seamless steel pipe or welded steel pipe for fixed connection. Finned radiator adopts the method of installing fins to increase the heat dissipation area and improve the heat dissipation efficiency. This method of improving the heat dissipation efficiency has been welcomed by people and widely used.
The radiator is mainly composed of an inner surface and an outer surface, the inner surface is called the flow channel, the outer surface is called the wall. The function of the flow channel is to transfer heat to the heat medium; The wall surface supports, strengthens and improves the effect of convective heat transfer. Due to the different shape of the wall, its heat transfer characteristics are also different. In addition, the shape, size and heat dissipation capacity of the radiator can be designed and processed according to user requirements.
Finned tube radiator is one of the most widely used heat transfer equipment in gas and liquid heat exchanger. It achieves the purpose of enhancing heat transfer by adding fins to the ordinary base tube. The base pipe can be made of steel pipe; Stainless steel pipe; Copper pipe, etc. The fins can also be made of steel belts; Stainless steel belt, copper belt, aluminum belt, etc.
Finned tube is mainly used in recent years for large area heating system in the heat dissipation equipment, according to the use of different environment to choose the material and process of the finned tube is also different, the following talk about the finned tube have several materials.
The fins in the finned tube can be made of copper, aluminum, carbon steel, stainless steel, etc. Each material has different advantages and disadvantages, which will affect the performance and effect of the finned tube.
Copper finned tube because of its corrosion resistance, long service life, good thermal conductivity of copper, fast heat dissipation, high efficiency, easy to adjust at room temperature, in addition, copper finned tube compact structure, small space, energy saving.
2, aluminum finned tube has the characteristics of small thermal resistance, good heat transfer performance, high strength, small flow loss, not easy to deform in long-term hot and cold conditions, long working life, etc.
3, steel fin tube heat dissipation efficiency, wide range of application, low carbon energy saving, heat medium can be hot water, steam, heat conduction oil and so on.
Air conditioning fin refers to the thin sheet metal element located on the condenser and evaporator of the air conditioner, usually made of copper or aluminum alloy material. They take on a spiral or wavy shape and increase the heat exchange efficiency by increasing the surface area.
Second, the role of air conditioning fins
1. Increase heat exchange surface area: Increase the contact area between hot and cold air or refrigerant to speed up heat transfer.
2. Improve heat conductivity
3. Enhance cooling or heating effect: by increasing heat exchange surface area and improving heat conductivity.
4. Improve air flow: For example, the shape of the spiral fin can guide the air to flow along the spiral path, increasing the contact time and area of the air and the fin.
5. Improve system energy efficiency
6. Corrosion resistance and durability