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The situation and development of heating radiator in residential area
Date：
2022-11-10 13:00
Steel radiator: The Ministry of Construction on the promotion of the application of new technology and new products in the promotion product catalog, also clearly listed the promotion of the following 6 radiator products: 1) steel plate radiator (metal thermal strength test value q>1.0W/kg); 2) Steel flat tube radiator (q>0.8W/kg); 3) Steel finned radiator (except interference, q>0.8W/kg); 4) Steel cascade radiator (q>1.0W/kg); 5) Gray cast iron column radiator (q>0.34W/kg); 6) Gray cast iron column airfoil radiator (q>0.36W/kg).
In the promotion of products, steel radiator accounts for the majority, steel radiator has the advantages of light weight, high pressure, good thermal performance, material saving and energy saving; Decorative strong; Easy to install and maintain, suitable for high-rise buildings; And good production conditions, easy mechanization, automatic production, product quality is stable, does not pollute the environment. The deficiency is the oxygen corrosion of steel radiator, causing damage to the product. In fact, foreign operating experience shows that when the heating system is closed, and the reliable implementation of the system full water maintenance, steel radiator corrosion prevention, can be avoided. The current problem is that the heating boiler operation is not standard in our country, system design and management is backward, hot coal containing oxygen is too high and it has not solved for a long time, as a result, foreign famous brand enterprises make well made steel radiator, in the heating system in our country, it also has short term corrosion destruction. Therefore, it is urgent to solve the corrosion prevention of steel radiator. At present, steel radiator is about 30 in the Chinese market, but its light and efficient energy-saving characteristics, become one of the development directions of heat sink.
Aluminum radiator: Because aluminum alloy molding is easier, it can be extruded into a variety of tubes, so as to make all kinds of light, thin, beautiful and new radiator. It is one of the most suitable radiators for residential use from these aspects alone. However, the fatal weakness of aluminum radiators is its serious alkali corrosion. Relevant research has proved that the aluminum radiator without internal anticorrosion treatment, its applicable water PH value is 5.08.5, and steel boiler water quality requirements PH value is 1012, so the aluminum radiator without internal anticorrosion treatment can not be used for boiler direct supply heating. For heat exchanger heating system, due to its water quality requirements PH value of 8.5, can be used, but pay attention to understand the operation management level, to ensure that the PH value of water no sudden high change. For small single-household systems that can be isolated from the heat network naturally without these problems, the conditions of use should be the best. The most reliable method of aluminum radiator is to solve the problem of internal corrosion.
Copper-aluminum radiator: copper-aluminum radiator is made of copper tube as water component, and aluminum plate as heat dissipation component. The combined radiator has good corrosion resistance and strong adaptability to water quality. At present, the Cuo-aluminum heat sink appears in our country, and has roughly the following 3 kinds: 1) Cover type Cuo-aluminum convective heat sink: It is characterized by having steel COVER, A width of 90mm, 100 MM, 120 MM, 140mm several SPECIFICATIONS, and there are two kinds of monomer type and continuous type outside cover; The cooling element in the cover is a large size copper tube (27) string aluminum sheet. Its metal thermal strength is about 2.0W (kg) 2.2W (kg).
2) Copper-aluminum composite tubular column wing radiator: It is characterized by aluminum outside and copper inside. The water-passing part is thin-walled copper pipe, which is produced by tube expansion and brazing technology. It is a riser column wing. The thermal performance depends on the structure and thickness of the aluminum fins.
3) Closed copper tube aluminum convection radiator: the feature is to omit the steel cover, the use of finned edge caused by the airflow channel (similar to the closed steel cascade). Thus greatly reducing the weight of the radiator itself.
Plastic heat sink: In the past few years, research units and manufacturers in our country have researched this project. While it was possible to achieve the heat measurement requirement according to household, it was possible to appear single household small system (automatic small boiler or heat exchanger). At this time, the radiator may be used in low temperature and low pressure conditions. For this, plastic radiator is very suitable. The working pressure of the plastic radiator is below 0.2MPa.
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Shenzhen Mingruida Hardware Products Co.,Ltd
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