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Expert Answers to teach you easily use solar water heaters

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Expert Answers to teach you easily use

With the promotion of energy saving, new energy products into people\\ s vision. is one of the more mature and popular products. Pursuit of new products at the same time, you understand its performance and use common sense it? In the purchase of solar water heaters, they should pay attention to what the problem? If you are plagued by these problems, the contents of this issue that we believe will help you.

    With the promotion of energy saving, new energy products into people\\ s vision. Solar water heater is one of the more mature and popular products. Pursuit of new products at the same time, you understand its performance and use common sense it? In the purchase of solar water heaters, they should pay attention to what the problem? If you are plagued by these problems, the contents of this issue that we believe will help you.

    Use: often used to avoid failure

    Solar water heaters in the process of the Central Standing Committee to use some small problems, most recently, the newspaper received a lot of convenience to the reader\\ s hotline telephone consultation, the League of Master Zhao convenience issues of concern to the reader to do the answer. In fact, some of which can solve your own problem.

    Ms. Lee asked: \"solar water heater in fine weather, why is the water temperature has been able to come up?\" Zhao said the master, there are several reasons for this situation can cause. First, look at the location of water heater installed, the top of trees or tall buildings, etc. Is there such a shelter materials. If it is not such a problem, there may be not related strictly on a valve, tap the top of the hot water tank out, leading to water up the mountain. If the valve on the loose, replace the new one. In addition, it may be within the vacuum tube collectors or fouling, need cleaning.

    Now buy solar water heaters are mostly automatic Sheung Shui, but sometimes it causes water plus some dissatisfaction. This is how to handle it? Master Zhao said that this situation could start to look for the water pressure is sufficient, if it could be excluded for this reason there is water leaking from top to bottom, you can try their own investigation about pipes, valves or fittings, the problem part of the replacement. In addition, it is leaking water tank itself, which you need to find maintenance personnel to replace the tank or welded.

    It is understood that the solar water heater is put into use, the best is often used to avoid memory management does not stay put for a long time out of the water, leading to lower the temperature, affect the next time the user uses, especially in winter also prone to cause pipe cracking. It is recommended to use 4-5 times a day is best, each time interval of 4 hours.

    The selection: collector performance is the key

    Many readers concerned about the process of using solar water heaters in question, but before that, how to choose a cake and water heaters, is also critical. Zhao you master a few suggestions here, but if you are worried about this, might learn from it.

    The main solar water heater is to use, so first of all is to see how the performance of its collector. Currently on the market, the domestic vacuum tube to \"Sun-core\" and \"U.S. core\" as well. Separately, the collector area is also a reference to the coefficient of the larger collector area, the greater the heat gain. Second, is the heat capacity of water tank, water tank insulation thickness and tank insulation material is the ability to affect an important indicator. Finally, the perspective is to install solar water heaters, because the angle and intensity of solar radiation is different from the best solar water heater and a tilt angle to obtain a higher heat. On the Chinese mainland latitude, 33 ° -55 ° tilt angle for the best.

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Solar water heater buying guide from which several parts?

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buying guide from which several parts?

By coating with a high absorption rate (greater than 93%), low-emissivity (less than 6%) of the advantages, so much enhanced the efficiency of the solar water heater collector. use high-quality 430 stainless steel plate bracket processing of shape, appearance, solid and reliable. But the material is stainless steel, and the complex manufacturing processes, so the cost is high, labor-intensive.

    Storage tank for the solar water heater installations, which by the liner, insulation, shell composition. Water tank adopts imported 304 stainless steel plate made by automatic argon arc welding process, due to a low carbon 304 stainless steel, so welding of high quality, easy to rust; 45mm polyurethane foam to form the insulation layer as a whole to ensure thermal efficiency of solar water heaters greater than 50%; tank shell color spray, high strength, freeze-drying by air proved: the local temperature in the tank up to 200 ° C in the case, not because the polyurethane shell expansion and deformation Splitting, and average temperature of -15 ° C to low temperatures, the cold compression of polyurethane will not affect the color plate housing.

    By coating with a high absorption rate (greater than 93%), low-emissivity (less than 6%) of the advantages, so much enhanced the efficiency of the solar water heater collector. Solar water heaters use high-quality 430 stainless steel plate bracket processing of shape, appearance, solid and reliable. But the material is stainless steel, and the complex manufacturing processes, so the cost is high, labor-intensive.

 

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Selection Guide of solar water heaters are there?

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Selection Guide of are there?

The first took the stuffy drying heaters. This is a collector and heat storage combined with the overall heat storage water heaters, generally two to three blacked-tube structure, the black coating to absorb heat from the water can heat the advantage of simple structure, low cost; shortcomings is a fast heat, hot water can not be used overnight, during the winter and rainy days can not be used, this product was only used in some remote rural areas, has basically been eliminated.

    1, first on behalf of nausea drying heaters. This is a collector and heat storage combined with the overall heat storage water heaters, generally two to three blacked-tube structure, the black coating to absorb heat from the water can heat the advantage of simple structure, low cost; shortcomings is a fast heat, hot water can not be used overnight, during the winter and rainy days can not be used, this product was only used in some remote rural areas, has basically been eliminated.

    2, the third took the flat-plate . It consists of flat-plate collector tank, generally using natural circulation operation mode. Flat channel heat from the heat-absorbing body, a transparent cover, back and side insulation layer and the framework composition. Domestic flat body of the letter are endothermic heat of the blow up process rolling composite pipe made of copper and aluminum plate, copper (copper wood) tube plate, welded stainless steel metal forming and other flat box structure. They are guaranteed clean water, heat-absorbing body sunny with acrylic top coat anodized black or colored with selective coating; collector back and side of the insulation materials commonly used in polyurethane foam, mineral wool and polystyrene vinyl plate (thermal contraction phenomenon, must be padded with heat-absorbing glass wool or reflective body separated), with a specially designed multi-framework aluminum (glazing and sealing materials). 5mm glass with a transparent cover. Features: low cost, high thermal efficiency, can produce hot water when there is sunshine, but heat faster, larger heat loss in winter, rainy days and difficult to achieve a bath temperature requirements.

    3, the third took the vacuum tube water heater. It consists of multi-vessel glass vacuum tube directly into the tank structure, the general use of natural convection heat transfer. Each vacuum tube is placed between the hole and water tank made of silicone rubber seal. Vacuum tube does not take the water, by the copper heat pipe inside the superconducting heat transfer medium, and high thermal efficiency without furring. Most of the domestic water heater real glass tube, which consists of a diameter of 37mm, 47mm and 58mm high borosilicate glass made of concentric tube sealing, tube between the pump into a 5 × 10-3Pa vacuum deposition with the outer surface of inner tube nitrogen gradient aluminum / aluminum selective absorption coating solar spectrum (absorption ratio a = 0.90 ~ 0.92, firing more than Σ = 0.06 ~ 0.1), the tube length with 1.2m and 1.5m two. Vacuum tube collector heat loss coefficient (U = 0.55 ~ 1.2W/m2.0C), so use it to make solar water heaters in the winter even better thermal performance, for in the North and the South suddenly overcast and rainy days suddenly Yang weather use. Characteristics: high thermal efficiency, absorbs heat quickly, slow heat, heat loss, as long as the amount of solar radiation to meet the requirements, rainy days and winter can also be used, the appearance of luxury, durability, up to 15 years, small footprint, ideal for home use.

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How the acceptance of solar water heaters

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How the acceptance of

Installed before the water heater should be no shade and facing south, to slant 10 degrees West. Tanks, piping, valves, fittings should be no water leakage. Not out of line pipe insulation, drain bag phenomenon. Vacuum tubes and vacuum tank plug location appropriate ? no damage, leakage, white phenomenon.

    First, how to water heater inspection

    Installed before the water heater should be no shade and facing south, to slant 10 degrees West. Tanks, piping, valves, fittings should be no water leakage. Not out of line pipe insulation, drain bag phenomenon. Vacuum tubes and vacuum tank plug location appropriate ? no damage, leakage, white phenomenon.

    Second, how to improve water

    1. Do a good job up and down the water pipe insulation.

    2. Selection of small thermal conductivity of aluminum tube and cross-linked tubes.

    3. Choose high-capacity water heater vacuum tube or longer, stay hot water, to improve the base temperature.

    4. Sheung Shui immediately after the evening bath, try to keep the tank full overnight, to prevent the half tank water temperature is high, when the upper air circulation cooling overnight.

    5. Full release after the water a little more water, the water hot water return pipe from the overflow after the expansion.

    6. Even the sun two days, or half tank of water, sun one day, the water temperature can be increased.

    7. Shower room temperature is low, Yuba or heater can be used to improve room temperature. Bath when the water temperature is low, add some water fill temperature.

    8. Using electric heating device, fill up water power, cut off power after bathing.

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Solar water heater buying guide related to common sense

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buying guide related to common sense

With the use of conventional energy sources of electricity, gas and other water heater, solar water heater with a very significant advantage; safe, clean, energy saving, environmental protection – which is advertising and its penetration in the case at a distinct disadvantage, can rapidly diverted electricity, gas water heater market reasons.

    I. What are the characteristics of

    With the use of conventional energy sources of electricity, gas and other water heater, solar water heater with a very significant advantage; safe, clean, energy saving, environmental protection – which is advertising and its penetration in the case at a distinct disadvantage, can rapidly diverted electricity, gas water heater market reasons.

    Second, how to buy solar water heater

    A good product should have a complete manual, warranty card, logo, packaging and other products look beautiful, reasonable structure, excellent selection, workmanship, and perfect after-sales service.

    Third, how much water heater purchase

    Generally takes about 35kg-50kg per person bathing water (45 ?). Unconventional because solar energy can not produce hot water in case the rain, so double the daily water demand to choose the water heater, hot water heat storage will be sunny to rainy day use. In case of two consecutive days, the choice of optical dual-use type, to ensure all-weather, all year has a hot water use.

    Fourth, the choice of what kind of pipe

    Often due to water heater on the roof, and inside there is a certain pressure, high temperature hot water in summer (up to about 90 ?), the outdoor temperature is low (up to -10 ? below), the actual situation, so the best selection of cross-linking tube or plastic or reinforced plastic composite pipe hose. With pressure, high temperature, low temperature, non-toxic and tasteless, small heat capacity, heat loss is small, easily damaged by frost in winter characteristics. Galvanized pipe heat capacity, heat loss, easy raw water rust, frozen pipes in winter, so should not be optional.
 

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Solar water heater enamel interior has become a mainstream

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enamel interior has become a mainstream

    Reporters recently learned from the industry, electric water heaters have been popular, and has many advantages of enamel interior, the solar interior is also upgraded to provide a reference and reference. From the original galvanized steel liner, to the stainless steel liner, to the enamel interior, the water heater to achieve a \"triple.\"

    According to reports, high-tech products as enamel interior, in the thick cylinder liner surface enamel, metal or ceramic materials, mostly silicide, together with seamless welding technology, can bear a greater range of temperature changes, the general -60 ~ +450 degrees Celsius temperature range, to be able to withstand sudden changes in temperature. Physical characteristics, compressive, tensile, elastic, electrical insulation, non-polluting; chemical properties, acid, alkali, high temperature, water vapor, a variety of ions can not penetrate its surface are, can not effectively ensure the quality pollution.

    Currently, the enamel interior rapid development in the domestic market, strong consumer identity, strong growth force. It is understood that enamel interior, have switched to become a mainstream product. Among them, the electric water heater longer course of development, with a few decades or even centuries. At present, whether domestic or international market, stainless steel liner has virtually disappeared, enamel interior products universal.

    Stage of development due to limitations in the field of , the vast majority of enterprises are using the stainless steel liner in the application of non-pressure solar water heater has some advantages, larger market share.

    Industry sources have told reporters that the past two years, the enamel interior solar market share increasing rapidly, especially in the split pressurized solar project market has shown outstanding performance, more and more manufacturers and real estate agency in importance as pressure project of choice. The future development of solar water heater industry, market pressure will become the dominant application. As the industry growth restriction, the current popularity of stainless steel liner industry to phase and phase enamel interior needed to transition.
 

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Use these tips very useful solar water heater

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Use these tips very useful

    in use a little attention, will effectively increase the efficient use of water heaters, and will play a multiplier effect. If you can properly maintain it, can effectively extend the service life of water heaters.

1 when there is light, solar energy can not Sheung Shui, in order to avoid temperature shock too broken tube. The best time to water heaters, Sheung Shui, before sunrise or after sunset.

2 bath, solar water heater if the water has run out, but people still do not rinse, then you can on a few minutes in cold water, use cold water sink, hot water floating principle, the top of the tube in the water, can then bath. If the bath where there is little hot water solar water heater, then a few minutes on the cold water from hot water can wash a man.

3 decision on the amount of water according to weather, water temperature can get quite satisfactory: if the next day sunny, the water can be filled; cloudy or winter, most cases can be on the water; rain, the preservation of the water is not cold water.

4 pm After the bath, if the tank still nearly half of 50-70 ° C hot water, in order to prevent excessive heat loss (less water, the faster the heat loss), but also decide on the amount of water according to weather forecast: The next day sunny, the full water; rainy days, the upper 1 / 3 of water.

5 solar water heater temperature adjustment steps are: first, open the cold water valve, cold water flows properly adjusted, then open the hot water valve adjustment until you get the desired bath temperature. Also weather conditions can be empirically determined based on the amount of cold water. Do not pay attention to head towards the body, so as not to burn! Solar water heater with auxiliary electric heating devices should pay special attention to Sheung Shui, to make the tank water is not less than 50%, to prevent the water dry.

6 bath sure to turn off the power! Northern autumn, winter and spring, due to less precipitation, snow or dust cover collector, this will reduce the water heater collector efficiency. If conditions should always wash or clean the vacuum tube.

7 lightning-prone season, please note: Do not use in solar thunder when it rains, to ensure personal safety! As the reliable connection of solar water heaters parts, wind resistance depends on other fixed means, use oil galvanized wire or 8 wire and extended expansion bolt, before and after the formation of eight-shaped, wind performance is good.

8 strong wind in coastal areas such as change the bracket and reflector structure, or remove the reflector, and with a rope twist spindle fixed, the better.

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Resolve why some real estate Taiyuan installed solar water heater ban

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Resolve why some real estate Taiyuan installed ban

Vigorously promote energy conservation in the country, low-carbon ideas at the same time, some residential property management companies and environmental rationale to prohibit residential property owners in the district to install .

    With global warming, environmental degradation is a growing problem. Coal, oil, natural gas and other non-renewable energy shortages and energy supply and demand are becoming increasingly prominent, the concept of low carbon environmental protection has been gradually formed and attention. At the same time, China is also vigorously develop renewable energy, promoting solar energy, geothermal energy, biogas and other energy use. China\\ s \"Renewable Energy Law\" enacted, but also to encourage, promote individuals to install solar water heaters. Vigorously promote energy conservation in the country, low-carbon ideas at the same time, some residential property management companies and environmental rationale to prohibit residential property owners in the district to install solar water heaters.

    Solar water heaters have been \"no install\"

    In the early 2005, when the fourteenth meeting of the NPC Standing Committee passed the \"Renewable Energy Law of the People\\ s Republic\", and revised in 2009, has been increasingly improved. In the \"Renewable Energy Law\", China developed a resource development plan, to encourage and promote use of renewable resources for each individual. However, in some new residential district in the provincial capital, property management companies in a variety of reasons against residential property owners to install solar water heaters in the roof, which not only damages the vital interests of the owners, also caused national economic policies are in conflict with the social orientation.

    Ms. Lee, the owners of the provincial capital of a district to reporters reflected, she moved into the provincial capital in the last year of a new district, in order to improve their quality of life, and to respond to countries on energy saving, low-carbon life, the call to his home to install a solar water heater. Ms. Lee selected solar water heaters in the market, in the residential property management company that the consultation process, property management to residential roof roof does not allow residents to easily Exalted and forbid public property owners in the district to install solar water heaters. To this end, Ms. Lee was especially puzzled: Many policies are now in the country to promote energy conservation, low-carbon life, and these things should be from the daily life of each one of us in the start, but why the property management companies are building Exalted and roof top can not just belong to the public owners of residential property, forbid the installation of solar water heaters in the district do?

    Ms. Lee reflects this problem for the reporter visited several residential quarters random and found that there are many residential areas have banned the installation of solar water heaters. Is it just a slogan on energy conservation really do?

    Loading ban is afraid of damage to the waterproof layer solar

    Living in low-carbon, energy conservation, under the premise, why are some residential property management company to prohibit owners from installing solar water heaters that use environmentally friendly low-carbon water heater?

    Provincial capital of a new residential property management company, said Zhang, now there are a lot of new residential district are not allowed owners to install solar water heaters, Zhang where there are many property owners in this district to consult can install solar water heaters. Zhang said that in fact they are very helpless, not the owners do not want to install, just worry about the installation process will damage the roof waterproofing layer, which may result in housing leakage, seepage, roof after all the public facilities district, the roof maintenance repairs to the use of public funds. And during the installation process, solar water heater vent pipe through the public, if the residential property owners have every household installed solar water heaters, is bound to affect the residents of each exhaust ventilation. As a property management company also hope that we can energy saving, low-carbon life, but property management companies also have their own difficulties. Although the country \"Property Management Regulations\" Can not the owners of residential solar water heater installed in the district to make clearly defined, but the \"Property Management Regulations\" that the residential housing walls, roofs, stairs and other facilities are public facilities, residential property owners in the use of these public facilities can not damage their performance, and does not allow long-term occupation of these public facilities. However, roof-mounted solar water heater takes up the roof, it belongs to the public facilities district, when in use there may be leakage, seepage phenomena, and the resulting losses to the other owners.
Benefits the country and installed solar water heaters

    China to encourage low-carbon living and advocacy, we have to respond to each resident\\ s responsibilities and obligations. Environmentally friendly, low-carbon living and not a mere slogan, but from the life of every triviality.

    Provincial capital of a new residential district property owners, said Mr. Wang, the current global warming is threatening the survival of humanity, wind, rain, earthquakes, heat, cold and other extreme weather events in the global frequent, we began to realize that human nature over damage caused by activities on the global environment a tremendous impact. We have been using gas water heaters, electric water heater not only by increasing carbon dioxide emissions, but also there is a big security risk, a threat to the improper use of personal and property safety. However, the use of solar water heaters not only brought a lot of our lives convenient and comfortable, and also for the community to save energy, reduce environmental pollution and destruction.

    Afterward, the reporter also visited a number of other residential solar water heaters can be installed, the owners said Miss Yang, home electric water heaters used in the past although more convenient, but it is prone to accidents, and more cost electricity. Now the use of solar water heaters is not only convenient but also saves a great amount of electricity under the spending, not a threat to our personal and property safety, but also in the process of using no emissions, no pollution of the environment that goes into our environment to do a little thing.

    Break the \"no loading order\" should be \"two-pronged\"

    Countries have a policy, there are difficulties property owners have difficulties, but it can be installed on residential solar water heater or should in accordance with China\\ s laws and regulations to do. Mr. Wang said that the responsible person, solar energy as a clean, renewable energy, save energy, reduce pollution has played an active contribution to the use of solar water heaters should be vigorously promoted lifestyle. China does have to encourage, promote use of solar water heaters installed individual policies, but some manufacturers of solar water heater production of some product quality, but off in the process of installation and use of housing will actually damage the roof. Mr. Wang has personally dealt with a solar water heater for leaks, resulting in the number of households home owners in the top water seepage, leakage of the event. In that event, after the quality supervision department of the test, the solar water heater has a fatal flaw in the design, resulting in leakage. Everyone do not want that to happen, many property management companies simply to prohibit owners from installing solar water heaters in the house roof. In fact, this practice of property management companies not only damages the interests of owners, but also violated the country on priority use of renewable energy policies, but this approach has a certain rationality, it protects the interests of the other part owners against infringement . Mr. Wang believes that this issue should be resolved in many ways, one should strengthen the supervision of the quality of solar water heaters, on the other hand should be strengthened roof maintenance, timely detection of problems and solutions, to ensure that the interests of owners do not suffer.

    China\\ s renewable energy use should not only encourage and promote, but should be multi-disciplinary approach to ensure that renewable energy use, safety and quality. Government regulatory authorities should introduce more detailed and comprehensive laws and regulations, norms solar water heater market, to ensure that the interests of everyone, the real implementation of low carbon environmental protection into our daily lives.

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Solar water heater services long road upgrading

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services, long road upgrading

In recent years, and by the policy of home appliances in rural market demand – driven blowout, double the size of the market, a number of capital and the interests of rent-seeking to market speculators. \"

    Recently, the solar water heater Haining exposure for CCTV companies there are a lot \"near the famous,\" \"shoddy\" and other acts, will the number of solar water heater company said in an interview, \"Haining event just opened a domestic solar water heater manufacturing chaos Council tip of the iceberg in recent years, and by the policy of home appliances in rural market demand – driven blowout, double the size of the domestic solar water heater market, a number of capital and the interests of rent-seeking to market speculators. \"

    Chaos in the market: industrial transformation and the resistance encountered

    \"Well into the door, Qian Haozhuan, risk, return quickly\" become frequent chaos solar water heater incentives. In addition, market supervision in place, the complete chain of product standards also provide a survival benefit speculators. In recent years, the sun, rain, seasons Mu-song, Emperor Ming, Sang Le, Haier and a number of industry leader, driven by strong competition in the industry is moving in the pattern of scale, branding the whole industry chain of direction, but still a large number of solar water heater manual workshop, speculative interest groups are located in Zhejiang, Beijing, Henan, Jiangsu, Anhui, Yunnan, Shandong and other regions, the rural market on the \"spoiler.\"

    Jiaxing Solar Energy Association, the Secretary-General Xu Zhu Ling told reporters, \"the chaos in solar water heater Haining there is not a day or two the end of 2009 there are a lot of leather workshop, weaving workshop saw this piece of market opportunities, have to intervene. Low cost, low-price competition in the market, while access to a certain development, but this model is facing a greater business risk. \"

    Although there are many problems Haining solar energy, but the reporter in December last year released the latest issue of \"solar water heater successful home appliances business announcement,\" see, there were only 19 companies Haining successful region, far higher than other cities.

    Beijing New Energy and Renewable Energy Association, vice chairman of the Lessons is that \"the past two years by the good momentum of the solar market and large prospects, the development of many enterprises are more impulsive, aggressive fact, technological innovation in solar energy products, sales service, product quality, there is still much work to do. \"

    Services, short legs: long road upgrading

    It is reported that there Haining CCTV exposure \"Hong Kong Haier\", \"Hong Kong Sun Rain\" and also appeared in large numbers near the famous acts in other provinces and cities, not isolated cases. Four Seasons Mu-song, the sun Po, Wong Ming, Tongji sun, Haier, Sang Le, and other famous companies directly suffered a \"fake\" shock. According to Jiangsu Solar solar Dajia Ban Bao responsible person said, \"some hands on workshop is often what is sold on the market what is produced, fake treasure not only affects the reputation of the sun, but also disturb the market competition order.\" To this end, the business in the company established within the Dajia Ban, run around all day in the first-line maintenance market brand and market interests.

    Counterfeit products, near the famous acts such as it is behind the endless worrying solar product quality. It is understood that the current domestic solar water heaters rely on the main service dealer located in the township is responsible for, and not as traditional appliances as professional services firms, and even sell products for many companies do not provide services to the dealer responsible for the full commission.

    \"Sales and Service Combo can quickly promote solar energy to rural areas, but the pattern is easy to replace the distributor for enterprise service issues arising once a company withdraw from the market, or replacement of a dealer market, then the previous sales products and services can not be guaranteed. \"A solar energy company pointed out that at this stage many enterprises do not have enough money and effort to establish after-sales service system, focus is still\" expand sales to grab market \".

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Solar definitions and technical performance of solar water heaters

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Solar definitions and technical performance of

    What is solar energy?

    Within the sun together with the hydrogen nuclei into helium reactions, constantly releasing tremendous energy, space radiation energy to keep, which is solar energy. Large amount of solar energy, China\\ s land surface is necessary when the solar energy each year at 170 billion tons standard of energy. And this fusion reactions inside the sun can be maintained for a long time. An estimated several billion first billion years. Limited relative to the survival of mankind, the solar energy can be said to be inexhaustible.

    Solar energy and human environment

    A sustainable development of society should be that meets current needs without compromising future generations of society. Therefore, energy conservation, as much as possible with clean energy and environment must be one of the basic principles. At present, environmental pollution has become increasingly serious impact on our life and health and safety, including coal in energy consumption account for a large proportion is the main source of air pollution. According to testing, each square meter of s in their lifetime may be caused by burning coal to reduce emissions to the atmosphere of harmful compounds. Thus development and utilization of solar energy is an important option to reduce environmental pollution. 1992 United Nations convened the Global Development and Environment Conference, many countries have included the focus on developing solar energy projects.

    Energy is the material basis of human survival, since the 1970s, global energy crisis, not only endanger the future of society and seriously affected the production and living in today\\ s society. The development and utilization of solar energy, on the one hand can be widely used in hot water, electricity, refrigeration, heating and other aspects, on the other hand can save a lot of non-renewable resources such as oil and coal, will greatly ease the energy shortage and the serious the consequences. As early as 1973, the U.S. government on the development of a class of photovoltaic power generation project, then many countries have developed a corresponding development plans. Prospects for solar energy utilization in China China has a vast, rich in solar energy development and utilization of resources and a good foundation. Total in the National Solar Radiation 3.8 ~ 8.4 × 10 kJ / sq m, accounting for about 2 / 3 of the region greater than 2000 hours of annual sunshine hours. Wind, geothermal, ocean energy, are also very rich.

    After years of effort, solar thermal has made gratifying progress. With the gradual improvement of the product, the public awareness of civilization. Has a potential market of 900 million people of rural development, application of solar water heaters will be a large-scale progress in the near future will form an air-conditioning, refrigerator, color TV, like the mass market. Solar energy strategy for the country\\ s environmental protection cause, to one of the world market and become an international solar energy industry, \"city\", China must quickly use of solar thermal break and a world leader. This is our solar strategy.

    A brief history of solar water heaters

    Solar water heaters for its safety, energy saving, environmental protection, to facilitate the salient features of increasingly high-profile. As China\\ s all-glass vacuum tube and heat pipe technology continues to break the key, the world\\ s leading solar water heater made an unprecedented rapid development, increasing its market potential is huge. Following the gas, electric water heater, the solar water heater has become a new bright spot, gas, electricity, solar water heaters, three kinds of \"three pillars\" situation will soon be formed. The development of solar water heaters, has gone through four stages: nausea drying-type, flat, glass vacuum tube type, heat pipe vacuum tube.

    The first generation: nausea drying type. 20 years ago, long hours of sunshine in our other areas of the Northwest, has now been eliminated.

    The second generation: flat. Poor results due to frost, heat loss, easy to plot scale, low thermal efficiency and short life problems have been gradually phased out. Because of its low manufacturing cost, the project is still in a certain market.

    The third generation: all-glass vacuum tube. High collection efficiency, good insulation properties, can be anti-diameter of 25 mm hail attack, for temperature above -25 ? for use. Moderate cost. However, due to the vacuum tube through a long period of water heating, there is leaking, furring possible.

    The fourth-generation: heat pipe vacuum tube. China\\ s use of the United States used in aerospace, satellite-based advanced thermal technology, the super heat pipe and all glass vacuum tube combination, developed a new generation of heat pipe , fast heat conduction, thermal efficiency, especially for the sun inadequate or short daily duration of sunshine the area. Vacuum barrier of water, no scaling, antifreeze ability, good insulation properties, long life, is a market darling.

    Technical performance of solar water heater

    Solar water heaters for its economic, energy saving, environmental protection, safety, convenience, water volume, etc., has attracted worldwide attention. As the key technology of solar water heaters continue to make breakthroughs, solar water heaters have been widely used in households, factories, hotels, schools, military units, hospitals, etc. for the shower, hot water wash, and other required places.

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