Composite heating radiator are "transitional" products – heating devic
Heat Pump Network HC Compound Radiator Is formed by two nested channel material new radiator, copper and aluminum are already complex, stainless steel aluminum compound, aluminum plastic composite 4. The name has been showed that the two sets of materials and co-location, such as copper and aluminum composite material, said two kinds of copper and aluminum, copper nested position within the outer aluminum, copper is the channel, aluminum is a jacket, emerged this year, the trend of magnesium on behalf of the aluminum , the birth of copper and magnesium composite, steel and magnesium composite, but it remains outside the aluminum cover image and role, but decided to wrap the main properties of materials, so no longer and spoke with a magnesium compound of the radiator.
Copper and aluminum compound radiator first born in Shandong in 1999, high-density, has been 9 years. It is based on our Heating Too much water and not standardized operation and management, thin-type radiator leaks often corrosive affect their development in the country under certain conditions the right moment. It appeared early as a year Paint Internal corrosion, have been widely implemented, then the fact that many, it is a thankless quite upset, this passive corrosion can not solve the problem. Solution is to take the initiative to regulate water quality and operational management of corrosion, or corrosion-resistant materials produced by the radiator. In general, the corrosion rate of copper is 25 times the steel, so copper heat sink can be used for wider waterways water quality, longer service life. Thermal conductivity of copper with good thermal efficiency, it is a chance, they are welcome to promote open soon to become one of the most popular radiator products.
Copper and aluminum composite radiator is a Chinese specialty, corrosion-resistant copper waterways, aluminum coat added to the decorative, quickly swept the country. As the price of copper than steel expensive, so there was steel-aluminum radiator, it looks beautiful form, also popular in the market because of its cheaper than copper and aluminum composite, but its life to much lower, or also should be within the anti-corrosion coating, or by Pump Wall steel pipe. Copper and aluminum composite steel and aluminum composite cavity cheap products, in addition to the advantage of beautiful appearance, other characteristics of very few.
In 2006, copper prices soaring, steel-aluminum the momentum for further development, but easy to oxygen than the molten steel corrosion Road still hinder their smooth development, so the development of stainless steel-aluminum radiator the momentum, but it was short-lived just brilliant for a year, the price of stainless steel although a little cheaper than copper, but has lost its welding properties of stainless steel, a corrosion of the biggest hidden trouble leakage.
Aluminum Composite Radiator Currently there are two products: Jiangyin City, Jiangsu Province and Inner Mongolia Baotou double Biao. The product is high corrosion resistance, long service life; within the table smooth, water resistance, no scaling; shape can be as beautiful as copper and aluminum composite; light weight, high pressure; Although the slow heat, low thermal efficiency, but the heat # is good, more suitable for space heating Department, is now made Plastic , Cost reduction, its promising.
Composite radiator key process is twofold: first complex process; second, steel pipe and drainage channel connection process.
Composite process method existing 5: 1, mechanical expander: dimensional stability, low efficiency, attention to a clean tube and head up to prevent scratching of stolen goods. 2, hydraulic expansion: higher efficiency, wall size instability, uneven wall when the affected. 3, pressed into the inner tube: steel tube can not be soft, steel and stainless steel available on the inside and outside the tube strict tolerance requirements, suitable for pressing into the short tube, long tube easily bent into a scrap. 4, assembly-type: aluminum coat for two halves, and with self-tapping screw, or rivet connection with the cap, low efficiency, a large complex space, a large contact resistance. 5, into the inner tube, the tube bore opening Huokou, the flexibility to expand the hole so that the inner tube can be easily pushed into, simple and high efficiency. Composite tightness is our concern to begin compound was re-tight long-term expansion and contraction, and material fatigue, which may look loose, increase resistance to heat reduction, which is a common problem with the composite heat sink.
Riser connection with the drainage process, from the connection strength point of view, no flange steel flange better than the suits in search of better off than flanging. After the outer flange, flow smoothly, resistance, stop # water light, no water, no fouling, corrosion, do not insert the riser, but also save some material. Welding connection is important is that the composite heat sink welding biggest hidden trouble, it often easy to leak, so that the advantages of the composite heat sink immediately lose.
Current high price of copper, stainless steel welding lost due to advantages of steel-aluminum optimistic, it is inexpensive and beautiful appearance, popular in Project And retail markets are popular, of course, more sales in engineering.
Compound radiator heating in our current standard of water quality and operation management of too many situations arise, and this non-standard will not long survive, it will affect not only our country, "with steel-based" development of the radiator, and back Boiler And the huge loss due to corrosion caused great heating system, standardization is the only way. Beijing had in 2004, on December 15 the implementation of local standards JBD01? 619? 2004 "Heating Heating System Water Quality and Corrosion Protection Regulations ", the national uniform specification standards are under development. Will be steel, aluminum radiator can be widely used safely, this technology complex composite heat sink would lose its advantages, there is a value up to leave a little steel-aluminum, to increase the color varieties. Therefore, the composite heat sink is only a transitional product.
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