Tag Archives: solar water heater china

Save the solar water heater with standard quality crisis

\"It is because of the strict manufacturing and testing systems, the U.S. ranked six times larger solar spot the red list in the forefront of national supervision.

In 2011, China\\ s \"second five\" the first year. Market in 2010 experienced a baptism and integration, the majority of solar energy companies in the market is full of confidence. However, the recent frequent exposure of solar water heater product quality problems, indeed, some companies a headache.

frequently the product quality crisis

Recently, the China Central Television, \"Weekly Quality Report\" to \"sun shadow\" as the subject, full exposure of the poor quality of the production process of solar water heaters, as well as end-consumers in the process of problem – poor insulation performance, service life is short. The news that the poor quality of the manufacturers of these products have been carefully packaged, sold nationwide from Haining. And to remind consumers to purchase must keep their eyes open. The news immediately caused an uproar in the country, competing media have also reported that some consumers are skeptical of solar water heaters.

Not long ago, some media reports, Beijing, Hebei, Shanxi, Shanghai, Henan, Chongqing, Xiamen, Shenyang, Changchun, Harbin, Chengdu, Xi\\ an and other 24 provinces of CASE (Council, Consumer Protection Committee) and the Chinese consumer by the newspaper, jointly launched a solar water heater usage survey. Survey, there are currently 40.87% of the solar water heater in the winter on the \"strike.\" Even in winter you can still use the solar water heater, and only 35.9% of \"easy to use hot water and adequate\", while 29.4% will have \"often use electric heating\", 25.2% is only \"a warm, barely used,\" while 9.5% poor results because of the use \"is rarely used.\"

Solar energy enterprises should actively take the road of brand development

\"We have to be traced, through the phenomena of nature.\" Zhejiang Solar Energy Industry Association Xia Zhisheng said. Some dealers in order to short-term interests, operating near the brand-name products, misleading the consumer. But it also shows that the solar industry, the big brands have not formed enough influence to change the dealer to make money for the purpose of irresponsible thinking, while consumer guide, refuse to buy substandard products and Pong brand. From the root so as to put an end to the recurrence of a similar phenomenon. In addition, many solar companies Haining region has also been active in taking brand development, such as the United States large, high music, God, too, and everyone hot. As consumers, businesses must be responsible, first of all is the product quality should be excellent, or very long.

As China\\ s solar thermal industry leading brand, one of the top ten largest U.S. solar energy industry CO., LTD is located in Haining, Zhejiang. Large Group 30 years the United States attaches great importance to product quality, and won the trust of dealers and consumers. U.S. vice president Zhang Jiangping largest solar company, said that since its inception, the United States a large solar energy has been \"quality first, reputation first, customer first, service to the community,\" the business, quietly saving for our country contribute to the cause of environmental protection. Not as high profile as some of the spread of solar energy companies, solar energy is the United States has been practicing great strength, technological innovation, strict quality control to enhance the overall strength.

\"It is because of the strict manufacturing and testing systems, the U.S. ranked six times larger solar spot the red list in the forefront of national supervision.\" Zhu Xiaoliang, Minister of the United States largest market, said, \"It is worth mentioning that in 2007 the National Quality Supervision, Inspection and Quarantine Administration of the country in domestic s for supervision and checking of the results shows that the U.S. was useful for large solar water heater on high heat and then, once again set a record of CIQ, up 46.66% over the national standard 11.0MJ/m2, the average heat loss factor is only 54.55% better than the national standard. \"

Allow consumers to feel safe in the solar water heater

\"At present the industry that there are some discordant voices, more perfect in our industry standard, enterprises should strictly enforce the no problem.\" Xia Zhisheng president said. Hope Zhejiang , from the perspective of the consumer is responsible to eliminate the production of solar water heater products, and continuously improve product performance and service levels, promote rapid product upgrades, so that consumers feel safe in the solar water heater.

At present, China has become the world\\ s production and use of solar water heaters superpower. Governments at all levels and relevant departments are making great efforts to promote the popularity of solar water heaters, Beijing, Hainan, Jiangsu and the introduction of policies specifically for users of solar water heaters use the appropriate subsidies, the purpose is to promote solar water heater industry healthy development of this sunrise industry . In this context, some seek short-term benefits as a result of the illegal manufacturers, the production of solar water heater quality problem, affecting not only the popularity and promotion of solar water heaters, solar water heater will also affect the healthy development of this sunrise industry.

industry ups and downs in the front line

    China\\ s solar water heater industry in recent years has made rapid development, China has become the world\\ s solar water heater production and application of the largest countries, industry in renewable energy as a whole the occasion of the outbreak, has continued to highlight the technical, quality, service, which impede the healthy development of the drawbacks, water heaters are not internationally recognized brand, the development path will become the industry for some time to be facing the issue, China\\ s solar water heater industry in the twists and turns ahead.

    In recent years, China\\ s solar water heater industry trend data fluctuated, the overall good. 2004 and 2005, China solar water heater industry were up 12.5% ??and 11.1% in 2006, driven by good policy, the growth rate of 20%; 2008 to 25% annual growth rate in 2009 exceeded annual production of 40 million square meters, accounting for 50% of the world, to maintain capacity of 145 million square meters, accounting for about 70% of the world total; industry growth rate in 2009 rose to 35.5% in 2010 grew by only 11.7%.

    Still general advice appliance industry analyst pointed out that China\\ s solar water heater industry is facing four major bottleneck: A solar market order and chaos, now nearly 2,800 enterprises with large-scale production and R & D capabilities of business less than 20, widespread product testing, but off, the production process behind such phenomena; Second, the current standard solar thermal industry has increased to 30, but there is lack of execution, binding is not strong and other issues, urgent need to strengthen enforcement of standards; Third, the developed solar market in rural areas has become saturated, especially in Jiangsu, Zhejiang, Shandong, Henan province solar energy consumption. Since the majority of urban residents for the lack of understanding of solar water heaters, installation of residential property restrictions and many other factors, urban market development difficult; Fourth, technological innovation, solar thermal systems and appliances and storage and other advanced manufacturing enterprises still a big gap, urgent should increase R & D investment, high-temperature solar thermal product development, product line, expand business and realize upgrading of industrial technology.

    China\\ s solar water heater industry, showing the three major trends: First, the flat plate solar water heaters into the future trends for building its own integrated solar panel the perfect combination, respected by the people, the current solar panel market share has risen to 30%; two, and building integrated solar into the trend of building solar water heaters as standard, in a good architectural design beginning to consider the installation of solar energy issues, which saves the developer the cost, but also the promotion of solar water heaters, enterprises and developers to achieve \"win-win\"; three , is the trend of international development, global solar water heater market showed rapid growth, sustained and healthy development of future industry needs urgent, solar water heater business gradually go abroad, to establish international brands into the general trend of the road, promoting China\\ s solar energy from solar power to power.

    S & P Consulting released yet, \"2011-2016 China solar water heater industry research and investment forecast report\" shows that improving product technology content, to achieve industrial upgrading, improve after-sales service, the future of our country into the international market is key to the development of solar water heater industry.

Flat-plate installation instructions

Flat-plate solar water heater installation, including: the host bracket assembly installation, installation of the collector, water tank installation, intelligent controller and electric auxiliary system installation, system installation, and the host pipe reinforcement.

1, the installed base

In the bracket before installing precast concrete barrier, then the stent placed in the concrete barrier, and with the bolt fixed. Concrete barrier and embedded parts bracket hole layout dimensions according to the size of production.

2, the host installation

Flat bracket assembly

Note: Cover the collector, water tank and connecting pipes installed after the final installation.

Water heater installation host must be fixed according to the following requirements:

a, with a fine wire rope from the top collectors bracket stayed along the four directions, between two symmetrical, and the building fixed;

b, one end of rope connected with the building, the building must be strong position in the hole, wedge expansion linked to the expansion of hook into the hole depth is greater than 5 cm in order to ensure the stability of the host. Or a bad environment based on the actual installation flexibility, but the host must ensure the stability and wind resistance.

Top of the hill bracket mounting

Bracket fixed

1, the piping system installation

include: valves, pipes up and down the road, insulation materials, pipe fittings and so on.

Before installation the tank should be carefully examined whether the foreign body, the installation process piping is prohibited debris mixed in, to prevent the use affect the normal operation of the system.

Between the collector and water tank connected:

Collector and water tank connection between the use of bellows, plus heat pipe.

Installation charge of road:

Solar water heater pipe connection varies by model and location can also be designed according to user needs on-site, this article provides only a typical heat pipe installation instructions and specifications

? try to set aside or embedded piping.

? pipeline should be the shortest distance, and to maintain high to low, to avoid anti-slope.

? To prevent the hot water return line check valve must be installed. Check valve installed in the hot water piping connected with the location, and along the vertical direction of the installation, ensure the arrow up, tap water with the same direction.

? non-blocking vents.

? All piping must be effectively fixed. Select the appropriate size of tube cards, control cards at a distance not greater than 1 m

? Solar hot water systems and water connection pipe valve should be installed. If the water pressure is higher than 0.6MPa, the installation should be in the inlet pressure limiting valve to ensure water pressure is not higher than 0.6MPa.

Pipe insulation:

Recommended to use high-quality thermal insulation material of polyurethane, rubber and plastic materials or polyethylene (thickness 20-50mm), easy installation and removal, non-absorbent, low thermal conductivity and good dimensional stability.

After passing the test the water pipe installation with the tropics, then insulation, pipe insulation installation steps are as follows:

? cover the insulation tube 30 cm from the pipe to the bottom under the tap and overflow pipe all the way (up and down pipes, overflow pipes tied together). Tap in the upper and lower mouth and overflow must set aside an additional 15 cm long pipe insulation to prevent shrinkage cracks occur.

? antifreeze key positions (pipe interface, the interface through walls) to enhance thermal insulation. Tube and pipe insulation should be combined with tight, non-existence of cracks, leak, leak and so on.

? outer layer should be fully wrapped with tape tightly around the outside and then a layer of aluminum foil.

? After installation, heat pipe to smooth vertical and horizontal, non-sagging parts. Heat pipe solar water heater with a fixed host to take measures.

Pipe freezing:

Requirements in the ice regions with tropical outdoor pipe must increase the frost, with tropical anti-aging, self-limiting temperature, start fast, low operation cost, easy installation and maintenance, thermal stability and other characteristics.

Caution:

? power should be strictly in accordance with performance indicators tropical design and construction, excessive use is strictly prohibited.

? Power line capacity options: a single power locks with the total traffic load current electrical connection with the tropical length is proportional to the power line carrying capacity should be based on current and antifreeze used start with the length of choice.

? the local temperature is below 4 ?, power should start with the tropics, the local temperature is higher than 4 ?, turn off the power to prevent energy waste and other accidents.

? Please try after pipeline installation after the installation of electric water heating cable.

To avoid electric tracer in the course of a security risk, barbaric operation is prohibited during the installation to prevent electrical heating cable outer jacket damage due to external force and, with your electrical construction personnel in accordance with the operating instructions tropics.

1, the installation of electric heating

If customers need to power auxiliary heating, it is necessary to connect the customer\\ s electric heating part of the actual situation. 3C power cord with in line with the requirements of 3 × 1.5mm rubber cable for outdoor use. According to actual demand intercept length of the cord. As shown by Figure XIII, first remove the electrical cover to protect the little box, stripping a good power cord into the connection hole, and fire, earth, zero access terminals, respectively, were L, N hole and pressed.

Pressed with a pressure line card, power cord, ensure that the pressure in the pressure line card power cable jacket on, and use a screwdriver to tighten the pressure line card, Reattach the cover. Strip, the pressure line to ensure that the ground the longest, followed by the zero line, the shortest line of fire.

According to customer demand, the other end of the power cord or plug leakage protection temperature controller, temperature controller and installation instructions see the temperature controller\\ s instructions.

Note

? Check the meter, power supply and installation of interior electrical components used to ensure that heating and electric power (see product data sheet) to match the non-overload!

? domestic installation must use 220V, 50HZ AC leakage protection device connected through the electric heating water tank and controller power supply.

? set up in a good position close to the tank grounded three-pin 16A socket; outlet must be grounded, ground, zero line strictly separate, three-hole socket is strictly prohibited in the ground and neutral connected together; on-site inspection lines, heating pipes poles and shell resistance, measured with a multimeter should be no reading, socket should be used for leakage protection plug with matching outlet prohibited use of poor quality, so as not to damage the cord, dangerous.

? outlet and temperature controller must be installed in a dry place and easy to observe the position.

2, the medium filling

Flat-plate collector under any circumstances do not recommend the use of direct heating, and heat transfer heat transfer medium must be indirect heating unit. The use of direct heating, the need to address the prevention of scaling and ice flow problem.

1) pipeline inspection

See flat-plate collector and water tank piping is connected properly, tighten pipe fittings, pipe fixed and reliable;

2) pressure tank pressure test piping

First tank T / P valve is open, close, end users of hot water the water valve, open the tap water inlet valve until the water tank filled with water and close the water inlet valve T / P valve, the pressure pump receives heat water outlet, open the hot water valve, start pressure pump start pressure, the pressure rose to T / P valve (0.6MPa) open up, when the T / P valve is automatically closed after record pressure, careful observation of the electrical connections for any leaks phenomenon, 10min of T / P valve is automatically closed after the pressure drop of not more than 0.02MPa, leakage is not qualified.

3) non-pressure tank pressure test piping

After connecting piping, hot water end users off the water valve, open the tap water inlet valve, exhaust valve until the tank overflow water to close the tap water inlet valve with a rag and wipe the surface of the tank and the connection carefully observe the connection point without leakage, 10min qualified internal leakage.

4) The collector loop piping pressure test

Pressure, non-pressure tanks and tank testing to ensure that after passing the connecting pipe to keep the water tank full of liquid state, the test pump connected to the tank filling mouth, open the pressure relief valve, open the pump filling, full of water Close the pressure relief valve and continuous pressurized until the pressure relief valve automatically open up to observe the loop piping for leaks, pressure for 10 minutes, no leakage is qualified.

5) medium filling

Collector medium (ice region antifreeze, non-freezing region of pure water) with the three filling process until it is fully. Close the pressure relief valve is full of media is automatically closed to prevent the system running media evaporation.

Note: matching media

Ice area in winter do not use softened water used to do thermal media, thermal media plus inhibitors, defoamers, etc., sufficient to prevent the collector scale.

Be sure to use the winter ice area do heat transfer medium used antifreeze, antifreeze recommend the use of ethylene glycol solution, the freezing point of antifreeze to at least the local minimum temperature lower than 10 ?. See instructions antifreeze antifreeze is valid, once a year should be checked for anti-freeze. Check the contents, including the freezing point, density, and also used in antifreeze should be visually checked and found that density, thickening, increased freezing and antifreeze become turbid, bad, taste, foam, etc. should be replaced.

3, Lightning

Collector installed on the roof, to prevent being struck by lightning, you need to install the lightning protection within the scope of effective protection, such as roof or with no lightning protection lightning protection facilities, but not water heater, you need to make a lightning rod and ground facilities .