ã€China Aluminum Network】We are in various buildings 24 hours a day most of the time, so the quality of buildings will have a direct impact on our human body. Only good building materials can make good buildings. From the perspective of our users, good building materials must have four conditions of reliability, energy saving, environmental protection and beauty.
1. Die-cast aluminum radiator fully meets the requirements of reliable, energy-saving, environmental protection, and beautiful appearance. Radiator is also called radiator. It is the end product in the building heating system. It also needs to meet the requirements of reliable, energy-saving, environmental protection and aesthetics. The device is well equipped with these features. In China, die-casting aluminum radiators are also called European-style aluminum radiators. The main feature is that the head of each column has a die-casting wind deflector, and the columns and columns are joined together by inward connection. This radiator has been manufactured and used in Europe for more than 60 years and is the more widely used radiator in Europe. The mature technology and process well ensure the quality of the radiator, and the resistance to oxygen corrosion makes it have a very good service life, so the reliability is very high.
Aluminum has good thermal conductivity, and its metal thermal strength is very high, which means that aluminum radiators can produce more heat with less material, and can produce more heat with less material. It can save resources in product manufacturing. The heat dissipation of the radiator is large and can be well regulated, so the indoor temperature can be adjusted as needed in use to reduce unnecessary waste. The radiator has high thermal efficiency, which can reduce the amount of heat medium water transport and reduce transmission energy consumption. Therefore, the energy-saving effect of the European-style aluminum radiator is very significant. Die-cast aluminum radiators have fewer consumables and are easy to process, so they have less environmental impact in manufacturing. The surface of the radiator is generally protected by plastic powder and does not volatilize harmful substances, so it is harmless to the environment and the human body. The radiator has a good wind guide structure, so it will not smoke the wall will not smoke top, can reduce the trouble caused by indoor repainting and damage to the environment and the human body, so the European-style aluminum radiator is more environmentally friendly green heat sink One of the devices.
Die-casting aluminum radiator has a very simple appearance, can be very integrated with the wall, with a variety of styles of furniture and decoration in harmony, in line with modern aesthetics. Why is such a good product widely used in Europe and hasn't been popularized in my life? There are many reasons, mainly due to the lack of awareness of the product and the fact that China's heating system management is not standardized. This will be analyzed in detail below.
2. The applicability of heating systems to buildings in our country. China has a large geographical area, with a large north-south span. Therefore, different regions have different requirements for heating. We can divide into two regions according to the different requirements for heating, namely the traditional heating area and the emerging heating area. The traditional heating area refers to the area along the Yellow River and to the north. The winter temperature is very low for more than 4 months. Without heating, it cannot live. The area of ​​the newly emerging heating area is very wide, and the warmth in winter is relatively short and the duration is relatively short. If there is no heating, the quality of life will be poor. Therefore, as the standard of living improves, various types of heating equipment will be used for heating in the winter.
In traditional heating areas, heating is mainly based on central heating systems. In this system, the heat sources mainly include thermal power stations, room boiler rooms, and large heat pumps. The heat medium has hot water or steam and hot water (secondary heat transfer). The outdoor water or gas pipelines are generally steel pipes. Steel pipes are prone to rust, so rust must be removed with acids or bases. However, after the rust is removed by the acid, the Steel Pipe rusts faster, and the rust removal effect by the alkali is better, so it is generally believed that the alkali has a protective effect on the rust of the steel pipe. Under this concept, the system administrators intentionally or unintentionally increase the alkalinity of heating and hot water, such as using rust-removed high-alkaline water directly as heating and hot water, or adding alkali to heating and hot water. To prevent users from stealing hot water.
In fact, the main factor for the rusting of steel pipes together is the dissolved oxygen in the hot water supply or the oxygen in the pipes, so the oxygen-removing and oxygen-blocking is the key to anti-corrosion of steel pipes. Stronger alkaline water not only pollutes the environment, but also shortens the life of various radiators and heat metering and control instruments. It also has certain corrosion on the steel pipe itself. Therefore, the centralized heating systems of foreign and domestic management standards have special oxygen removal equipment for their heating and hot water supply, and they must be closed systems, full of water and maintenance to fully remove oxygen and block oxygen. In this standardized system, most of the radiators can be used very well, while the European-style aluminum radiator not only has a large amount of heat dissipation, but also has a unique wind-guiding structure. one.
In traditional heating areas, there are also many districts that use independent heating systems. The heat sources mainly include gas boilers, domestic oil burners, small heat pumps, etc. The hot water is generally tap water, and the water pipes are generally aluminum plastic pipes, PE pipes, and PPR pipes. The PH value of hot water in this system is generally neutral or weakly alkaline, which is very suitable for European aluminum radiators with high thermal efficiency and good regulation. This is the outstanding advantage of European-style aluminum radiators. This kind of independent heating system's heat medium water flow mainly depends on the circulation pump in the heat source, so the flow rate is not large, and the heat capacity of the radiator is required to be small. This is the advantage of the European aluminum radiator. Coupled with the European-style aluminum radiator wind guide structure so that the smoked wall is not smoked top, so we can easily see that the European aluminum radiator is the perfect match for an independent heating system. In our country's new heating area, the heating system is more complex, but the more used is the above independent heating system.
Some areas near the north also use central heating, while areas near the south use more air-source heat pumps, but individual heating systems spread throughout the area. Therefore, in the emerging heating areas, the radiators used are generally European-style aluminum radiators and steel plate radiators, and the steel plate radiators are easy to smoke. Therefore, European-style aluminum radiators are a better choice.
At present, the floor heating system is popular in some parts of China. It should be treated rationally in terms of reliability, energy saving, environmental protection and aesthetics. First of all, from the point of view of the reliability of the system, due to the characteristics of its pipe and the fact that the ground temperature cannot be too high, its inlet temperature cannot generally exceed 40° C. In order to bring enough heat into the heating area, the flow must be increased. A special control system is needed to control the influent, return, and mixed water, which greatly increases the complexity of the system and greatly reduces the reliability compared with the simple radiator heating system. From the viewpoint of energy conservation, if the floor heating system is used, the building must consume more building materials to prevent the heat from leaking directly from the external wall; and the system's regulation is very poor, unable to control the temperature as required, only long-term uninterrupted Operation, which greatly increases energy consumption compared to European-style aluminum radiators that are easy to control. As far as environmental protection is concerned, the relative high temperature of the ground will float suspended dust and bacteria that should have been left on the ground within a distance of 1 to 1.3 meters, which will have a greater impact on human health, especially for children and the elderly. . From an aesthetic point of view, the advantage of floor heating is that it does not see the existence of the system, especially in the bedroom and other areas do not see the inconsistent radiator. However, the system reduces the height of the room, and the complex control system also requires a dedicated area for installation, which is an aesthetically unfavorable aspect. Therefore, the popularity of floor heating in foreign countries, especially in Europe, is not high, so our country should not strongly advocate and use it. China's energy supply will be intense for a long time. We should learn from countries in Europe that have done a good job of energy conservation and environmental protection, and we strongly advocate energy conservation in buildings. We will focus on the development of energy-saving and environmentally friendly heating systems based on radiator heating.
3. Comparison with existing radiators and technological innovation We have used radiators for heating for more than one hundred years. It is simple, mature and reliable. So it is still the main mode of heating. There are many types of radiators in China, including cast iron radiators, steel tube radiators, steel plate radiators, copper tube aluminum string radiators, copper-aluminum composite radiators, and die-cast aluminum radiators. Each has its own characteristics and use occasions. Cast iron radiators are traditional radiators, and the larger advantage is their resistance to various types of corrosion, so they have a good service life in systems with non-standard water quality. Disadvantages are low heat dissipation, rough and bulky, energy consumption during the production process is large, environmental pollution is large, thermal inertia during use is large, and temperature control is inconvenient. Therefore, medium and high-end residential areas are rarely used.
Steel tube radiators have been developed in recent decades. Their advantages are high pressure resistance and low price. Disadvantages are smoked ceilings during the use of smoke, fear of oxygen corrosion so the life and system management have a great deal of control. This radiator is not conducive to mechanized production, and the performance is not outstanding, so it is rarely used abroad. However, the service life requirements in China are not high, so at present this kind of radiator is used quite a lot.
Steel plate radiators are more radiators used abroad. Their advantages are high pressure resistance and low price, which is conducive to mechanized production.
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