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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 .

Frequency of heat pipe should be sun

\"Put out of the water pipes can be a tea.\" Recently, many people reflect the last few days of hot weather, to a \"heat stroke\" phenomenon. Subsequently, the reporter from the sale of solar water heater maintenance department was informed that the weather is too cold or hot water pipe burst easily lead to solar water heaters, solar water should do the protective measures.

    \"Put out of the water pipes can be a tea.\" Recently, many people reflect the last few days of hot weather, solar water heaters to a \"heat stroke\" phenomenon. Subsequently, the reporter from the sale of solar water heater maintenance department was informed that the weather is too cold or hot water pipe burst easily lead to solar water heaters, solar water should do the protective measures.

Solar water heaters frequently \"heat stroke\"

Evening of August 22, Yuetang board who lives in the garden pond shop Eastcom Miss Liu Yi, suddenly found a home kitchen was flooded, the water from the wash basin has been under the cabinets out.

Liu Yi view that open the door, turned out to be a crack pipe solar water heater, water is kept out. She quickly turned off the button, Sheung Shui, solar energy, it makes the water stop. \"A week, solar water heater for two pipes.\" Liu Yi said.

Maintenance workers, said Liu Yi family outside a solar water without the insulation pipe, insulation tube of water play a protective role, this is no pipe water pipe insulation protection in the sun, the water pipe was broken aging.

Repair business busy

Then we arrived at the South Road construction Yuetang industrial market sales of a brand solar water heater maintenance department. Maintenance man described Zhu Shifu, summer and winter is the peak of solar water heater maintenance.

\"Want to change more than a dozen more to the day when the root pipe.\" Zhu Shifu said, almost all recent home maintenance to be replaced because of water pipes burst water pipes. The weather is too hot or cold water pipe solar water heater easily lead to physical changes occur, coupled with improper use, easy to broken water pipes, causing leaks.

To this end, Zhu Shifu remind the general public, solar water heaters, hot water or heating pipe in the water easily when burst, sooner or later the public is best to lower temperatures in cold water; In addition, outdoor solar water pipes are wrapped in silver paper under pipe insulation, specifically used for the water, \"sun\", and the public can themselves check whether there is insulation tube defects, if timely fill in order to prevent solar aging water pipes.