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International policies to protect the healthy operation of

Chinese solar water heater business to be more and better international, macro government level should be \"shot.\" Rely on the rigid laws of the market regulation and government constraints simultaneously, to protect China\\ s solar water heater industry, international health run.

At present, there are at least about 3,000 solar energy producers, and companies manufacturing solar water heaters at least 2000.

Today, solar water heater industry\\ s first mandatory national standard \" system efficiency of limited value and energy efficiency rating\" standard will be officially released with a matching \"domestic energy efficiency labeling rules\" also \"will be the fastest at the end of the official publicity. \"

With worldwide energy shortage situation deteriorating, the world in an unprecedented adjustment of the development of solar, wind and other renewable energy resources, the introduction of a wide range of policy measures to encourage and promote renewable energy industry to accelerate development . Although China is the world\\ s largest solar water heater state ownership, but ownership per capita in Israel are still far behind other countries, the Chinese market has become an international market is an integral and important part.

Maturity from the consumer point of view, Europe remains the largest consumer of solar water heaters, but the United States, Canada, Mexico, represented by the North American market, with South Africa as the representative of the African market, to Turkey, Syria and other Middle Eastern countries represented in the Middle East market is booming.

Application systems from the product point of view, to Europe, Australia and other developed regions, represented as the product of its own awareness of solar water heaters are more mature and use, coupled with its own characteristics and construction spending habits, mostly confined system products, and as the Middle East, South Africa, India and other regions of China, demand for products closer to market conditions, mainly in non-pressure systems.

The competitiveness of the product itself from the point of view, vacuum products in some mature markets, because of its flat products in the winter compared to the superior performance, and is positioned as a high-end products, but in some countries and regions, the vacuum tube products clearly been \"ill-treatment \"for flat products of the\" second-rate substitute \", of course, and some of our small company spirit of\" making a point also earn \"business philosophy and shoddy product-related.

European flat plate collector is still dominated the market, or a tube supplement products, but part of the market has shown its own advantages and with the performance of the price advantage in China.

As the world\\ s different countries and regions of the solar water heater for consumers with different consumption habits, but also because different parts of the water quality, water supply in different ways, different structures, different national standards and customs of different cultures, etc., forming the world\\ s countries many solar water heater products personalized needs. If you can meet the demand of these differences, we must have strong technical support and the ability of independent innovation.

Chinese solar water heater business to be more and better international, macro government level should be \"shot.\" Rely on the rigid laws of the market regulation and government constraints simultaneously, to protect China\\ s solar water heater industry, international health run. Government should introduce policies to support the promotion of the internationalization of China\\ s solar water heater industry, the rapid development. Many countries in the world of consumer products in the use of solar water heaters have subsidies, such as the maximum subsidy of 60% in Germany, the UK system, subsidies for each ? 500, the Austrian government subsidies for solar water heating systems for each home € 2,000 and so on. At present, China is no preferential use of solar thermal. The state should develop renewable energy from the perspective, to take appropriate measures to encourage and support solar water heater business to carry out technical R & D and product upgrading, increasing production and consumption of enthusiasm. Economic integration in the global market environment, the government should first protect the domestic solar energy solar energy enterprises and foreign enterprises in the same starting line, there is a fair and equitable environment for development, not in terms of competition one step short.

Stainless steel water tank in the flat in the application of solar water heaters

When the sun shines through the glass cover plate absorber on the board, most of the absorption of solar radiation absorbed by the body, into heat energy, and transmitted to the fluid channel of the working fluid. By natural circulation or forced circulation, while the stainless steel water tank heating.

Flat solar applications in buildings

China solar energy water heater market, an absolute advantage in the current vacuum tube water heater is an indisputable fact, but also extremely strong development momentum, the outlook is even more charming. But I can not be ignored in recent years, flat panel heater, becoming the highlight of the show, the new darling of the domestic users, the mainstream international market, and was even some experts and scholars believe that the future direction of development of solar water heaters. If I were complacent in the size and level of vacuum tube water heater, rather than to study carefully the advantages of flat panel solar water heater and development, it is impossible to look at long-term and seize the future, to master the initiative to enter the international high-end market.

First, the basic structure of flat panel solar water heater

Flat-plate solar water heater is mainly flat-plate collector, storage tanks, pipes, brackets and fittings and other components. Flat-plate collector is a key component of flat-panel water heater, the heater thermal performance is a measure of the level of an important indicator of good or bad. Include coated with selective absorbing coating of the absorber plate, transparent material cover, insulation and shell four major sections. When the sun shines through the glass cover plate absorber on the board, most of the absorption of solar radiation absorbed by the body, into heat energy, and transmitted to the fluid channel of the working fluid. By natural circulation or forced circulation, while the stainless steel water tank heating.

Heat-absorbing plate information abroad basically copper and stainless steel, the country has a lot of use of copper, aluminum, steel, galvanized sheet, poor water quality in coastal areas, you can use plastic or glass instead. Because the metal surface of high reflectivity, low absorption, in order to enhance the absorption, it is necessary in the metal surface coating that is heat-absorbing plate preparation. According to different preparation process, the coating can be divided into the plating coating, electrochemical conversion coating, vacuum coating and the coating of the coating are four main forms. Because the collector is surrounded by air, so when the collector absorber plate of solar radiation in the transformation of heat energy to water, also the heat loss to the surrounding environment, which makes solar radiation energy is converted into water can not be all the heat. In order to reduce this energy loss, heat-absorbing panels installed above the transparent material cover, so rather than cover through far-infrared through visible light, thus reducing energy loss, to more effectively improve the heat-absorbing plate and the water temperature. High-quality translucent material cover on the water heater\\ s efficiency and life have a significant impact.

Cover material used at home and abroad mainly ordinary plate glass, tempered glass and glass steel, which is still the most widely used glass. The sides and bottom of the absorber plate placed insulation materials, to reduce the collector heat loss to the surrounding environment, to improve the collector efficiency. Commonly used insulation materials are rock wool, mineral wool, polystyrene and polyurethane, etc. Polystyrene will shrink at higher temperatures, so use it as insulation materials, often in the heat-absorbing plate and put a thin layer between the first rock wool or mineral wool. In order to heat-absorbing plate, light cover and insulation to form a whole, and to maintain a certain degree of stiffness and strength is easy to install, need to have a more solid appearance of the shell, usually with aluminum, steel, plastic, glass, etc. made . In addition, there are flat panel solar water heater tank insulation, brackets, pipe fittings and other structural elements most.

Stainless steel flat panel solar water tank

Second, the development of flat panel solar water heater

Flat panel solar water heater in the country has experienced a \"U-shaped process, a new starting point now gradually gaining ground, experts, scholars and entrepreneurs attracted attention. According to the data show that in 1997 China\\ s annual production of solar water heaters 3.5 million square meters, of which about 45% of flat panel solar water heater vacuum tube water heater accounts for about 30% of the flat plate solar water heaters in China in 2001 the proportion dropped to 26.3% while the vacuum tube water heater up to 63.2% as of now, after nearly 10 years continued to decline, State share of flat panel solar water heater will yield only about 90% of the However, the international market, flat panel solar water heater, but always the dominant product, foreign (such as Japan, USA, etc.) more than 90% of solar hot water systems use flat type solar collectors, even in very cold winter in Denmark, Sweden and other Nordic countries without cases.

State authorities on the development of global solar water heater for a statistical analysis. By statistics in Europe, America, Oceania and Asia, 21 countries in 433 solar energy companies, with flat panel solar water heater 401, accounting for 92.61% total number of enterprises with 12 s, accounting for 2.77% of total number of enterprises simple solar water heater 20, accounting for 4.62% of total enterprises Clearly, foreign applications of solar water heaters, flat panel solar water heater production and trading of other products is far greater than the number of types of enterprises. With the promotion and popularization of new energy, and technological progress and development, the country flat panel solar water heater technology and product performance, quality is also improved from time to time, and in the integration of multiple aspects of the development of a unique performance advantages. Project of the Beijing 2008 Olympic Games, \"Olympic Village\" large-scale solar hot water system tender to select the German production of flat plate solar collectors, so that our vacuum tube have to reflect on your breath.

March 6, the sixth Chinese solar brand product exposition, Haier successful Australian ten thousand square meters of solar flat-plate collector to become the largest single news arouses envy. Haier Group, the introduction of advanced flat-plate collector from Germany technology, developed for the Chinese market, high-temperature flat plate solar collectors, solar panel to solve the victory of insulation, sealing and other industry problems. Sun, rain, Aucma and other domestic brands have also invested plate solar water heater project. After a solar water heater industry and the joint efforts of the construction industry, the country is flat solar water heater from the bottom to a new stage of development.

Third, the characteristics of the advantages of flat panel solar water heater

Flat panel solar water heater after decades of development, technology has become more mature and complete, and have the other types do not have the advantages of solar features.

One particularly suitable for integration with the building requirements. Flat plate solar water heater because of its structural characteristics, building integrated solar applications, flexible free form structure, design, shape or size constraints are not easy to achieve with a combination of building components. Combined with its collector plate of metal, wire knot can be easily used, welding and other connections for the installation, maintenance and use of provided lunch.

Second, high thermal efficiency. Because the vacuum tube solar collector is formed by a number of vacuum tubes there is a gap between the pipe was too much sunlight, there is a partial solar collectors are not accepted. Flat plate solar collectors is a continuous plane, the entire collector surface can receive sunlight. Therefore, the same area and sunlight intensity lighting, flat panel solar water heater is generally higher than the daily average efficiency vacuum tube solar water heater efficiency of 6% on average.

Third, the pressure with good performance. As the flat plate solar collector absorbs heat from the collector made of metal and stainless steel holding tank connections are metal parts, therefore, acceptable from the water circulating pump and the pressure.

Currently, the country is generally a centralized water supply systems, water pressure is high, which requires out of hot water from solar water heaters have a certain pressure, thus, reducing the water heater outlet and the pressure difference between outlet for user convenience and comfort. Fourth, the formation of large system performance and stability. For some large places such as hotels, swimming pool, factories and other places, the use of solar water heaters, they often need a lot of blocks composed of large-scale solar collector water supply system. If the use of flat plate solar collectors, the collector and the metal connection between the systems, and vacuum tube solar water heater, rather than as connected with the rubber parts, we can ensure the stability of the entire system.

Therefore, the establishment of large-scale s, it is often the use of flat plate solar collectors. In addition, the structure of flat-panel solar water heater is simple, convenient and easy processing of large-scale production, but also makes it has a low manufacturing capital, provinces and installation costs and long service life. Of course, there are flat plate solar collector heat loss and high antifreeze and other issues, also need to be resolved through further technological innovation. In order to actively participate in international competition, to develop the domestic high-end market, flat panel solar water heater must attach importance to research and development of a more open mind, improve our level of solar thermal technology and international level

Qingdao lightning frequently blocks of

    Reporters from the center of Qingdao Weather Bureau learned mine, the center of the city\\ s residential area recently, explosive mine sites and industrial and mining facilities for the inspection, the inspection process found that, compared with the mining industry and residential area there more security risks, lack of public awareness of lightning safety, some residential areas there are security risks.

Understanding of the situation, according to Mine Center, the city\\ s residential property more than 70% of lightning conditions up to standard requirements, there is illegal use of s, sun room and other facilities situation, BAN with lightning often useless.

Problems

Do not regularly check the state of disrepair

Bureau of Meteorology Mine Center, the official told reporters that they began in March of this year mine inspection, as there are already more than 400 units were examined, results showed that about one percent of which is not standard. \"Fortunately, mining enterprises and flammable and explosive places, residential area of ??the mine situation is not optimistic.\"

Inspection found that many of the urban area, lightning protection devices dilapidated unit, not for regular testing, equipment design, construction, non-standard, testing is not timely rectification of problems, some even refused to accept the test.

\"In addition to the city of Shenyang, a district is unified by the developer to install and allow us to produce drawings, the solar water heaters use less qualified.\" The official said.

Although most of the new district are equipped with lightning protection, but rarely put into use after the application for the inspection, some of the lightning protection device due to external or vandalism, lightning did not even come into effect. \"Residential property was told that money, they quit shaking his head.\"

It is understood that the cost of a mine detection, as the building body of the decision, a single building just a few hundred dollars to the body.

Many people always feel that they are distant lightning across, things just have to encounter more serious, it is reported, in a building inspection, Shandong Road, Building property has not cooperating, until last year suffered a lightning strike after lightning to find this center, set up their own requirements for lightning protection facilities.

Reporters visited

Solar water heaters with higher than lightning

Yesterday afternoon, the reporter first came Yan\\ er Island Road and East Road at the junction of a residential area to see, the roof area is only a few scattered solar water heater. Although the slope-style buildings, but reporters saw in the distance, the water heater on the roof height, or significantly more than the distribution of lightning in the roof with a height of four weeks. And east-west highway in the Rehe junction cell, the solar water heater on the roof can be seen everywhere, are standing high above the roof, higher than the lightning with a full half-meter.

The same situation also occurs in the four streams, No. 11, Road 221 Road No. 31, roof and Cing, almost every residential area of ??solar water heater, a roof over their height with lightning.

Experts warn

Facilities equal to the security of Disorder \"drawing lightning.\"

Lightning center of the experts told reporters, solar water heater has become quite common, but the public the wrong installation method will bring a great risk. Water heater installation height than the lightning protection zone, with equal protection from the lightning, if not any installed water heater next to the lightning rod, lightning strikes, lightning will follow the pipes into the room, who will be taking a bath or even hit the dead and damaged . For signal control line water heater, lightning induced electromagnetic pulse will line the road, destroying the solar water heater control system, and even wounded personnel.

Staff said, not the roof can not install solar water heaters and other devices, but must pay attention when installing these devices is more than lightning with a high degree, if more than lightning with a high degree, it is necessary to install a solar water heater next to the lightning rod, and connect to grounding. If the installation of TV antenna on the roof, awnings and other devices, but also pay attention to whether they meet the lightning protection standards, if they doubt, consult the Mine Center.

Knowledge of

Consumers to buy is the most fundamental standard should be easy to use winter to see the winter can not provide enough hot water in winter, water tank insulation effectiveness, and secondly, the choice of the brand to homes on the \"small\" to take \"Big.\"

First, choose

First select the professional manufacturer of the product, it is best quality brands, and has excellent internal quality and excellent after-sales service system and commitment to consumers in the purchase of solar water heaters, they should also have self-protection, to see a see is not the \"three noes\" products, if not a professional manufacturer of the product, there is no guarantee of quality, if it is fake and shoddy products to get money for the purpose of service is empty. Because solar energy is not the final product, installation and after-sales service is very important. If the improper installation or service can not keep, to a large extent also affect use. So do not emphasis on price rather than quality (including product quality and service quality), the expert teams of three measures to consumers.

First of all, when consumers buy solar water heater is the most fundamental standard should be easy to use winter to see the winter can not provide enough hot water in winter, water tank insulation effectiveness, and secondly, the choice of the brand to homes \"small \"take\" big. \" Brand is the manufacturer of a credit guarantee to consumers. Finally, be sure to choose the most obvious performance advantages of large brand-name products, the only way to buy roses for solar water heaters.

Second, the essential quality of vacuum tube

The core technology is solar water heater vacuum tube, and vacuum coating layer of the core technology is the technology leader in the current international standards are used to interfere coating layer coating technology, many manufacturers on the market are still used in the previous gradient film coating technology, gradual absorption of the membrane than 0.8 to 0.88, while the emission ratio was 0.07 to 0.13; interference film absorption ratio of 0.94 to 0.98, emission ratio of 0.03 to 0.06. Therefore, in the same light conditions, interference film collector pipe capacity than the average of 12% or more. Coating layer directly determine the effects of the use of solar water heaters and life, because the tube is cut at a high temperature cut 800 to 1,000 degrees, if the coating layer separated and too close, if not high-temperature coating layer and a very good cutting technology, the coating will certainly be burnt or damaged, it is generally the manufacturers had to stay a little longer blank layer, but such tubes can also be started in 2012, a long time effects are not so good. Summer water temperature can be as high as 90 to 100 degrees, this brand water heater temperature can be done, a long tube in the water at high temperatures to cook, if not high-temperature coating layer, coating layer which is certainly influential, especially air drying in air traffic control when the temperature is as high as 300 to 400 degrees, so as mentioned above, the general manufacturing enterprises in the production of vacuum tubes to use for a long time will not you imagine the.

Third, the water tank is also a key quality

In the absence of solar radiation in the case (night or rainy days), solar water heater will heat the outside release, both the heat loss of solar water heaters lose energy mainly through two ways: (1) cooling water tank (2) vacuum cooling to reduce cooling water tank The main method is to take the tank insulation measures, as the fed and warm, full of warm underwear underwear does not depend on the thickness of the same, good or bad insulation thickness and insulation material not directly related to the consumer not to be (XXMM extra-thick insulation ) misled by this propaganda, but rather focus on the foam mass, density, closed-cell foam rate of technical parameters of the water tank is the best material SUS304 stainless steel, made of high quality SUS304 stainless steel liner, resistance more corrosion. Inner year after year to be immersed in water. If the poor corrosion resistance, rust corrosion, leakage, life is short. Your example is also a bike, spend four five hundred to buy a bike, riding for a long time is not easy to rust the rim, but more than a hundred dollars a bicycle, riding a couple of months, a rain shower, rims on all the rust. Is also a stainless steel rim, why a non-rust, a rust it? This is mainly because of its rarity in different grades of stainless steel chromium and nickel content is not the same. Good stainless steel, chromium, nickel content of 7% to 10%, so the anti-corrosion ability, is not easy to rust; and low-cost low-quality stainless steel, chromium, nickel content of only 1% to 2% or even simply not there. Therefore, the use of one or two years it is easy to rust. SUS304 stainless steel of high chromium, high nickel, durable, long life.

Liner material selection is critical welding process is also critical. If the welding process is not good, the use of hand-welding, welding can not control the speed and time, welds or over-burning, easily oxidized at high temperatures, susceptible to corrosion; or welding is not transparent, easy to open the seam, causing leaks. Brands have automatic arc welding, welding with argon protection, weld tightly and securely, long service life.

Fourth, the support structure components should be reasonable and strong

    stent design should be reasonable and should have sufficient strength and hardness and acid resistance, corrosion resistance to ensure adequate load-bearing capacity. Solar stent placed in the room but not the top floor to withstand wind and rain, in the purchase of domestic solar water heater should also note that the product is designed to have wind resistance, but also to follow the principle of mechanical design.

Fifth, temperature controller, pipe fittings is not the first wife

Solar water heaters have a very intelligent water level controller, he has two tranches of Sheung Shui automatic and fully automatic electric heating settings, there is a speed manual Sheung Shui settings and manual electric heating, water enough to make you sit back and relax! Have hot and cold water pipes, all kinds of copper fittings such as brass ball valve, check valve, tee, elbow, the wire will also affect your water needs. Because solar energy is to use 15 to 20 years, solar energy work environment in the outdoors, winter, cold rain and snow, Xiatian Lie on temperature, for pipes, fittings requirements are particularly high, if his parts do not match, use effect is difficult to ensure, in a very large extent, affect your water, or even treatment, freeze plugging, corrosion, aging, or even fall off, the solar \"semi\" to consumers endless trouble!

Sixth, after-sales service

Domestic solar water heaters after-sales service is also very important. Because of domestic solar water heaters are durable consumer goods, and is usually installed in the roof, solar bulky, precision components, poor working conditions, if the service is not professional, non-standard, in case of failure, the user is difficult to solve, phone call How many times have nobody, or even simply to find people. So the service must be protected. Currently, the market machine free warranty period is generally 3 to 5 years. Be sure to select brands and brand products and good after-sales service dealers.