Tag Archives: solar street lights

Solar water heaters easily triggered lightning burglary

Posted on January 13, 2012 by admin

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easily triggered lightning burglary

May 9, Qingdao Municipal Bureau of Meteorology lightning two residential areas of urban centers to conduct mine investigation found a number of problems: the highest in the roof of the into the \"culprit\", most likely \"triggered lightning burglary\"; mine facilities, severe corrosion, lightning protection roof Luandaluanjian destruction facilities and other issues will be more. Reporters learned that the residential area is now almost no initiative to apply for mine detection.

    Significantly higher than the height of the solar water heater with lightning, thunder and lightning will hit the solar water heater along its route into the interior.

        Castle is about to usher in the thunderstorm-prone season, As a precaution, May 9, Qingdao Municipal Bureau of Meteorology lightning two residential areas of urban centers to conduct mine investigation found a number of problems: the roof of the highest Solar water heaters as the \"culprit\", most likely \"triggered lightning burglary\"; mine facilities, severe corrosion, lightning damage to the roof Luandaluanjian facilities more problems. Reporters learned that the residential area is now almost no initiative to apply for mine detection.

Error install solar water heaters as the \"culprit\"

May 9 morning, a reporter with the Bureau of Meteorology Chief Tan Qingling lightning detection center and two staff members, community residents came together for mine detection.

In Jinhu a district, a residential building inspectors boarded the seventh floor roof. Reporters found that a lot of platforms installed solar water heaters, and some residents in order to maximize the absorption of heat, the water heater installed on the roof top area. Although surrounded by several lightning protection zone, but significantly higher than the lightning with a high degree of water heaters. One looked out from the ceiling, near the balcony on both the situation, especially the steeple of the gallery, sat the steeple above the water heater, the highest point in the whole building.

\"In most cases, the lightning will the highest point on the ground as the discharge point now where most of the lightning hazard area is a mistake to install solar water heaters, resulting in lightning protection zone has not achieve the effect of lightning, thunder and lightning hit the solar water heater along the line will enter the room, you need additional lightning rod above the water heater. \"Tan Qingling Chief introduction.

Lightning protection severe corrosion in need of replacement

Jinhu a district\\ s residents in the roof, pointing to a resident inspector makeshift board room, said: \"This illegal construction significantly higher than the lightning protection zone, which itself has not added lightning protection, easily struck by lightning, which kinds of temporary board room easy to use conductive plate, inside the insulation layer and easy to fire, being struck by lightning will fire once, causing danger. \"

Tan Qingling said that in their normal testing, many residents of illegal buildings built in the roof, but few people think about with lightning protection, and some stamped when the destruction of the original facility, completely put themselves Under the risk, it is easy to \"lead mine upper body.\"

Springs Road, a district in Chicago, the inspectors found on the wall in the downstairs reserved for developers when building mine detection box. Have a lot of cement paste test case has been dead, exposed to several test cases have been severe corrosion, difficult to open. Inspectors strenuous forced open a test box, the inside of the lightning protection have been rusty.

\"Lightning protection equipment, many are exposed, through wind and rain easy corrosion, impact lightning effects, so every year for anti-rust treatment, once the rust serious, he would quickly be replaced.\" Tan Qingling said.

One should be charged, the district refused to test

Facilities need to check mine once a year, but over 90% of residential property refuse

May 9, two cell detection, have been there 10 years Fangling the district, but this is the first time mine detection, some residents have never heard of lightning detection.

Tan Qingling said they had to inform some of the district where the property for mine detection, can be heard, should be charged, said study to study, then no letter. In the calendar year of investigation, there are over 90% of residential property \"refused\" to accept mine detection.

According to reports, the mine facilities required annual inspection once a year, depending on the cost of building a test body of the case may be, a single building just a few hundred dollars to the body. \"A lot of people always feel that they are distant lightning across, things just have to encounter more serious,\" Tan Qingling said.

? test site

A glance at instrument building body is mine

Springs Road Yijuminlou in Chicago before, the staff come up with a bunch of long wires, wire head with a nail, to the soil in a plug, wire and instrumentation connected. Another staff member pull the other one wire inside the lightning detection and lightning set the connection, operation detector staff pressed the button on the meter, the meter shows \"1.2 ohm\" words. According to Tan Qingling introduction, the residential buildings of lightning device as long as no more than 4 ohms resistance even if qualified.

Tan Qingling told reporters that a building need to install any kind of lightning device, not only according to the floor level of the calculation, but also consider the nature and importance of the use of the building.

According to regulations, the agency must have a lightning detection device to detect lightning qualification, Qingdao Municipal Bureau of Meteorology is currently only center with a mine. For detection unit or residential property can call 82795014 contact. Installation of lightning protection facilities, agencies need to have lightning protection design, installation qualification, Qingdao City, there are many related businesses, the public can call the city center of Tel 82799047 Lightning inquiries, or log in Qingdao Meteorological Bureau

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New residential areas to promote the use of solar water heaters humble opinion

Posted on January 13, 2012 by admin

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New residential areas to promote the use of humble opinion

With the current part of the underemployment, poor sales of the status quo compared to the huge new residential s to meet the demand and urgent need. Which ordinary people can not help but wonder: solar water heater manufacturers and distributors at all levels, why not take the initiative, so that new residential solar water heater into millions of households do.

    New residential occupancy before the renovation, the water heater is one of the owners of essential household equipment. Owners now use electric water heater is the choice of no choice. Xiyuan, Haidian District of Beijing to build community, for example. The area of ??more than 2,200 housing units Ninety percent of units look northward. South of the huge balcony. Twenty-three owners without a use of solar water heaters. One only two cases. As the owner of the new district, the reporter learned that Ninety percent of the owners have a green, low carbon, environmental awareness, know that \"a large electric water heater power and solar water heater energy costs money, almost no electricity, save money.\" (residential property owners so) common sense. Renovation beginning, the owners really want to install a solar water heater. Renovation is now finished, normal living, and still did not give up on the installation of solar water heaters. Unfortunately, rarely seen near the solar water heater on the market for sale. Advertisements of the daily solar water heater even more limited.

     With the current part of the solar water heater manufacturers underemployment, poor sales of the status quo compared to the huge new residential solar water heaters to meet the demand and urgent need. Which ordinary people can not help but wonder: solar water heater manufacturers and distributors at all levels, why not take the initiative, so that new residential solar water heater into millions of households do.

      Fact, the answer is obvious, we do not understand the solar thermal business to a new residential area of ??strong demand for solar water heaters, or \"end-market demand for small urban communities,\" the old concept. Thus the lack of sufficient attention to ideology, action will slow down naturally.

     So how do we expand the market?

     Reporters thought: First, the solar water heater production and sales enterprise decision-making, common understanding, a new residential area is determined to restart the market, so seductive. Meanwhile, next to the new district, on the basis of careful research, come up with specific implementation. And to seek local government (district offices, neighborhood), especially residential property owners supported by the Committee (now the new district decision-making is an owners\\ committee non-property company owners of the property is to hire Property Management Committee sector).

     Second, the action. First, the publicity. The panels, in-kind live demonstration based. Panels highlight the content, such as the installation of a 1200W electric water heater, its actual daily heating time of 5 hours (24 hours a day, intermittent heating), 5 years down the power the number of degrees, according to the current tariff calculation, 5 years will be how much money. Solar water heaters are almost zero cost and so on. Choose a live demonstration of a large population movements, sunny place. Strength of the business owners can consider installing a solar water heater at home free, make a model, for owners to visit a neighbor, experience. More than 2,000 households in a community can at least do twenty-three showroom. Of course, do better.

      Time should be selected on various holidays on Saturday. When home owners. Notice posted at least one week in advance, preferably each made a single color page.

      Second, the product selection. With the increased income to the owners choose the high-end products is inevitable. Some companies in pursuit of sales, the main push the low-end product, a way to seize the market. Counterproductive, so that products in the market competitive. High-end profits of large solar water heater products, products with market competitiveness. Now customers choose home equipment, the first value is the quality, and is the price. Who is not willing to repair to repair. Therefore, companies should reduce the low-end solar water heater products, the main push in the high-end products. Thus, to maximize profits for the enterprises, but also improved the company\\ s brand image. Even more critical is that the owners with the peace of mind, rest assured.

    Specific to a single product of the solar water heater collector, requires no scaling, frost, high thermal efficiency, service life (10 years), maintenance-free and beautiful appearance. Recommended flat-plate collector, U-shaped vacuum tube collectors.

      Water tank, high pressure water tank is required, in addition to round, but also there are different specifications for different shaped water tank needs to place the user\\ s room. No vents. No running water, an explosion of concern.

      Solar water heaters require the use of the simple, convenient, low failure rate. Long warranty, good after-sales service.

     Third, the price. To 80 l water tank, for example, solar water heater electric water heater is twice the price is appropriate, not too high.

     In short, state and local governments have introduced a variety of related departments to promote the green, low-carbon industrial policy of active case, the solar thermal industry has shown robust growth momentum. Despite last year\\ s sales in China\\ s market share of solar collector project has reached 40% (according to China\\ s solar thermal industry alliance of data). But do not underestimate the terminal retail market of solar water heaters. Terminal by the national retail market is also an active policy of patronage, but also great potential. Therefore, the solar thermal manufacturers, distributors and further develop a new residential area of ??solar water heater market, it is wise to choose, the people of the enterprise is a win-win thing.

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Solar water heater industry giants want to shuffle into the city

Posted on January 13, 2012 by admin

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industry giants want to shuffle into the city

Has been called \"sunrise industry,\" said the solar water heater industry, after a blowout in 2009, 2010, high callback, this year entered a period of accelerated shuffle. Many well-known companies in the industry have started to adjust strategy, to look from the lower margin of the rural market to urban, in response to the collapse of the brutal wave.

    Has been called \"sunrise industry,\" said the solar water heater industry, after a blowout in 2009, 2010, high callback, this year entered a period of accelerated shuffle. Many well-known companies in the industry have started to adjust strategy, to look from the lower margin of the rural market to urban, in response to the collapse of the brutal wave.

\"Has long been expected to reshuffle the solar water heater industry will now have news that a month has dozens of in closed, and the data are slightly conservative.\" Rain in Jiangsu Solar Co., Ltd. Sun, director of marketing, told reporters Song Yongquan : \"The whole industry, competition is the transition to large-scale, such as a county-level market, was also active in hundreds of brands, this year we found that the normal operation of less than ten brands of solar water heaters, up to 90% attrition rate.\"

Song Yongquan views have been on profit Solar Co., Ltd. Jiangsu, Wang Hui Yu\\ s support, he told reporters that the end of 2009, the National Register of solar water heater more than 7,500 manufacturers, and by the end of June 2010, the Chinese Solar Energy Society has held a meeting, was left with 6000 statistics, more than six months, reducing the 1000 to the first half of this year, more than 6,000 is shrinking into 4000. Industry viewpoint, the next five years, China\\ s will be even dropped from the current 4,000 to 300.

Songyong Quan told reporters that the root cause of a sharp decline in the market, the solar water heater industry for many years disorderly growing like crazy. Since the implementation of China\\ s solar water heater industry, there is no production license system, and need not go through 3C compulsory certification, anyone can easily enter the industry, plus a few million of equipment five people, will be able to put forward a factory. Relevant information, more than 6,000 domestic enterprises, with independent R & D capabilities and real-scale production of the business less than 20.

Industry competition, declining sales company Forced to find another way. Previously, the main battlefield of solar water heaters in rural areas and towns, counties and cities to take factory-level models of individual agents are more urban and overseas markets has been supporting roles. \"China\\ s solar water heater industry are taking exactly the opposite way and appliance industry.\" Wang Hui Yu told reporters, home appliances are fully mature in the city to the countryside, it is in product quality and after-sales service have been market tested; and solar water heaters are Firstly toward the rural, poor quality, no after-sales management and other issues often arise, to the industry caused a bad influence.

Right now, the giants have announced a number of solar water heater to enter the urban market, and have to pay close attention to technological innovation and industrial upgrading. Japanese Leader recently developed a special plate solar water heater, water heater combined with this international trend, the integration with the perfect combination of city building, the introduction of the market response was very good. Song Yongquan also said that at present the sun the rain developed a vacuum tube into the pressure system than the previous glass tube into the pressure system more secure, more energy-saving, ideal for urban high-rise buildings.

\"In fact, the profits of the urban market has been good, solar water heaters in some regional markets but also with other energy sources such as air, gas and other complementary use to solve this problem also makes solar water heater industry in the area of ??the city\\ s commercial and residential market has been favored . \"industry sources, since the requirements for the installation of solar water heater is relatively high, city high-rise buildings are capable of supporting the installation of a solar energy business,\" city \"of the key factors, the current research and standards relevant departments under way, but the outlook is uncertain.

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Balcony wall solar water heater temperature is not enough reason analysis

Posted on January 13, 2012 by admin

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Balcony wall temperature is not enough reason analysis

    Currently, many manufacturers of flat panel solar water heater Balcony wall there is no hot water, particularly in autumn and winter performance even more.

    Why is this the case? There are several reasons.

    1, the ratio of collector area and tank capacity is unreasonable. Balcony wall heaters are flat-plate collector, all glass tube type, heat pipe, U-shaped tube, no matter what kind of collector are present lighting utilization of floor space. Although solar energy is clean, free energy, but energy density is low, to 17MJ / (m. D) of sunshine, for example, 1 m 100% solar heat all day into hot water (temperature 40 degrees), and only then Only 102L. As the collector\\ s own area-efficient light collection efficiency, the balcony of the solar energy area, the balcony of illumination time, light intensity and other factors, resulting in heat gain from solar energy is less than the design heat load, combined with cold temperatures fall and winter seasons lower, but the bath temperature is really demanding, with the heat load increases, the water pressure tank capacity of the same, do not start the case of electric heating, will be lower than in other seasons.

    2, balcony hanging solar water tank heat exchanger heat transfer efficiency is low. According to Fourier law, heat transfer efficiency of the contact area with the heat exchanger, flow rate, heat transfer material closely related to the current balcony wall heat exchanger in the form of solar water tank with small tank, jacket, coil several forms. Heat transfer area, the jacket and coil heat exchanger is larger than a small tank, flow rate, the forced circulation system is better than the natural cycle, heat transfer material, the most use of enamel liner jacket water tank, copper pipe better than the enamel coil.

    3, medium circulation line is unreasonable. Currently the balcony wall, mostly natural circulation , the natural cycle of the bit is no external power, relying on the system itself, the fluid density difference between the automatic cycle. However, the loop natural circulation system must be higher than the collector tank, because the system itself, the fluid dynamics of the formation of very small density difference, it must be taken to reduce a variety of fault system vascular resistance. Such as: selection of a larger diameter, piping as short as possible, turning as little as possible, to prevent anti-slope, causing the gas block and so on.

    4, the collector system, poor insulation, heat loss. To solve the pressure, antifreeze and other issues, commonly used in solar water heater Balcony wall secondary heat exchanger systems, pipe insulation do a good job, good selection of high performance solar thermal collector, solar collectors are effective in reducing some of the heat loss to significantly improve the efficiency of the system.

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Characteristics of the advantages of flat panel solar water heater

Posted on January 13, 2012 by admin

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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, in the building integration of solar energy applications, flexible free form structure, form or size of the design constraints are not easy to achieve with a combination of building components. Along with its collector plate of metal, wire knot can be easily used, welding connections for installation, maintenance and use facilitated.

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

Third, the pressure with good performance. As the flat panel solar collector absorber plate is made of metal materials, the collector and the storage tank is also used to connect metal parts, therefore, from the water and can withstand the pressure of the circulating pump.

Currently, water is generally a centralized water supply systems, water pressure is high, which requires out of hot water from 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, they often use flat 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 a low manufacturing costs, installation costs and long service life Province. Of course, the existence of 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, we must attach importance to research and development of flat panel solar water heater, a more open mind, improve our level of solar thermal technology and international level.

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Mandatory installation of solar water heaters significant effect

Posted on January 13, 2012 by admin

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Mandatory installation of significant effect

Although solar water heater has a clean, energy-saving advantages, but a long time, in cities has not been widely used to form the trend. With improvement in technology and technology breakthroughs, solar water heaters gradually began building a place in the city.

Solar water heaters in terms of energy saving, cost saving point of view is that today the government to develop renewable energy in the context, have to time to promote. The reasonable use of solar energy, to further promote the utilization of solar energy, has become the focus of the industry. Although solar water heater has a clean, energy-saving advantages, but a long time, in cities has not been widely used to form the trend. With improvement in technology and technology breakthroughs, solar water heaters gradually began building a place in the city.

It is understood that over the years, the city to promote solar water heaters is not satisfactory. Traditional solar water heater installation inconsistent with the city\\ s architectural style, the city and look into the solar industry the outstanding problems. Some residential properties for uniform planning requirements of the district, does not allow owners to install solar water heaters. In addition, the city most of the main multi-storey and high-rise residential, small roof space does not meet all the needs of households using solar energy installation, the roof on the various types and brands of water heaters placed clutter caused by the visual pollution. These are the traditional solar water heaters in the city to promote the bottleneck. However, this situation is expected to be a new solar water heater out of the window wall to break.

New out of the window wall and the water tank solar water heater collectors are separated from each other, the collector can be flexibly installed on the roof terrace walls or bottom of the window wall, excellent wind resistance; water tank is placed on the balcony on the ground or indoor wall. As the up and down the water in the room, water heater and then afraid of the winter cold, with wind, frost, high thermal efficiency advantages, greatly reducing the building restrictions on the use of solar water heaters, solar water heater can make the same as home air conditioning in accordance with the indoor unit and outdoor unit two parts of the free installation. Industry experts said that such a water heater can solve the high-floor roof line is too long and the problem of limited installation space for the realization of solar integrated building and find a breakthrough, especially for urban high-rise building users, is a regular \"boring sun-type \"a revolutionary breakthrough in solar water heaters. Industry experts believe that to promote the integration of solar energy and buildings, solar energy is the future trend of development and the biggest bright spot, and there may be a watershed in China\\ s solar water heater industry.

Mandatory installation of a significant effect

In recent years, some of China\\ s provinces, municipalities and local governments (such as Hainan, Jiangsu Province, Shenzhen City, Jinan City, Xingtai City, Sanmenxia City, etc.) have been promulgated and implemented with the mandatory installation of content to further promote the use of solar water heater policy Most require 12 layers (or 9 layers) must be installed on the following civil s, including the scope of residential buildings and public buildings.

Many solar water heater business, offered support and actively participate in and actively promote the \"put a installation policy\" implementation. However, in actual operation, some shortcomings have been exposed, which is the industry\\ s largest local protection ills. Experts believe that: in the implementation of the mandatory installation of solar water heater policy, supporting the introduction of a number of implementation rules and management practices, can prevent or curb the tendency of local protection. For example: It is recommended to further strengthen the solar water heater product quality supervision and management, in particular SMEs, to increase the proportion of supervision and checking of the product; proposed mandatory installation requirements give priority to certified products, and as soon as possible to carry out civil construction of product certification; recommended the gradual implementation of the national authorities of solar hot water system installation qualification system, strengthen the solar water heater sales, installation and after-sales service activities, supervision and management; suggest the importance of mandatory installation of active promotion and practice, etc., will help promote the use of high-quality products, China\\ s solar water heater market is conducive to survival of the fittest.

In fact, the problem with the survival of the fittest, as in the implementation of the policy of mandatory installation of solar water heater at the same time, supporting the introduction of a number of implementation rules and management practices, is to avoid unfair competition. For installation of solar water heaters into the residential situation, obviously can not just rely on price as the sole criterion for cell entry, but should be considered the quality of their products, installation techniques, operation mode, service, prices and other factors, to formulate a scientific project bidding and reasonable way, both for solar water heaters fair competition among enterprises, but also help to ensure that solar hot water systems in civil engineering quality.

Industry still needs policy support

China\\ s \"Renewable Energy Law\" enacted for the development of solar water heaters create the environment, but not enough to promote healthy and stable development of industry. China\\ s annual gross floor area to 1.5 to 2 billion square meters of growth, according to the national planning: to maintain the total amount of solar energy by 2020 will reach 300 million square meters, if the policy support in place to achieve 350 million square meters of total holdings, when the solar water heater can increase annual production to 108 million square meters (solar water heater with 10 years life cycle basis).

Whether it is the annual production of solar water heaters, or ownership, China already ranks first in the world, the world\\ s production and application of solar water heater power. Industry insiders believe that: At present, there are still many urban communities do not consider the requirements of buyers use the water heater to block the installation of solar water heaters. Government should as soon as possible, \"Renewable Energy Law\" rules, remove barriers to residential solar equipment. Prohibits local governments, developers, property owners to block installation; require construction design department set aside for new buildings should be made compulsory installation of solar water heaters, piping, installation of the circuit and the load-bearing platform; for such offices, schools, hospitals, hotels and other places, must be standard installation of solar products, especially the government departments should take the lead to do demonstration.

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