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2011 solar water heater industry can rise from the doldrums to
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2011 industry can rise from the doldrums to
The initial date of 2011, China\\ s solar water heater industry in droughts and Sharp, inflation pressure, raw material prices, labor costs are high, the rural market is overdrawn chemical effects such as the role of multiple factors, many enterprises are facing a greater risk of the unknown.
It is understood that following the 2010 annual growth rate of 15.8% of the market, after the first half of this year, the industry growth rate slowed down again, the first half of the industry growth rate dropped to 10%.
Solar thermal industry has experienced many years of savings, 2009 in the number of adverse environmental factors, still to achieve rapid development. As a result, many companies in 2010 full of hope, began to put on a scale and speed competitions. Industry giants such as Emperor Ming, Li Norit, sun, rain, seasons Mu-song, Sang Le and other companies have started off-site expansion plans. Sang Le is the layout of the country\\ s production base, Haining, Yueyang, Huainan, Zhengzhou, Xianyang, Baoding, Tieling nine major bases; Marino Shanghai base, sun shower base in Shenyang, Sunshine\\ s remote Hubei base expansion initiatives, etc., in to some extent to accelerate enterprises to enter the \"era of large-scale competition.\" At the same time, such as the sun treasure, dual-energy, Best, per liter, power source, filled to the sun and other enterprises on a local scale expansion began a contest. Many companies want to economies of scale to hedge raw material prices, rising labor costs and other risks. Meanwhile, a large number of companies are constantly upgrading equipment staged competitions. Some companies hesitate to bank loans, increase capital investment in equipment upgrades, sales can not keep up as the market leading equipment idle. This year, the monetary tightening, rising interest rates, increasing pressure on businesses!
On the other hand, the frequent start home appliances, over-consumption of the rural market potential overdraft. Meanwhile, the first half of the turbulent economic environment and adverse weather conditions, farmers\\ spending power of consumer psychology and caused some impact.
In addition, it is worth noting that the growth of rural market weakness, but also in business development efforts inadequate. From the current situation, the so-called overdraft consumption potential of being more than 10 km radius around the suburbs or rural county, that is, a little remote that large rural market is not effectively covered. Northern Jiangsu, Shandong, Zhejiang, Shanxi, Shaanxi and other places of the rural penetration of less than 20%. This is an important reason for slow growth during the first half, but also the future of solar water heater market is an important intrinsic motivation.
Overall, first half of the entire industry did not develop smoothly. Industry has experienced continuous consecutive years of rapid development, met with a situation of weak growth. Although last year\\ s wave of depression has to be prepared for many manufacturers, but more severe in the first half of the macroeconomic situation, the industry or the deterioration of living environment for many manufacturers did not expect. In this sense, the first half of the enterprises hesitate and blind, is normal. Other hand, some industry leaders, their market is rhythmic, or resort to the scale, or to rely on technology to develop new fields, etc., this robust and rich entrepreneurial market for the future development of such enterprises laid a solid foundation , but also for the development of the industry set the main tone.
Looking ahead the market, for now, still not very clear. But just look at the end of the run in June, as the sun rain solar Rong-Hua Chen, general manager said, \"Perhaps the most difficult times are over.\" After a year and a half hours and low growth companies also seem to adapt such an environment. Fine management, attempts to improve the quality of business operations has become the normal operation of most solar companies, which can be understood as the intrinsic quality of the future development of the industry.
Second Five-Year Plan for national solar thermal utilization policy, will continue to implement in the future to the actual implementation. Use policy, will bring new business to enhance the solar energy space. For example, various types of solar projects, all kinds of subsidies for energy saving, various high-tech subsidies, etc., will be the development of the enterprise rich soil.
From the industry itself, the use of solar energy in the field of high temperature will be a huge breakthrough cake. Solar water heaters are still accelerate the upgrading of the urban projects of the rural market and lower market penetration of solar energy companies, also means that future growth.
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Tagged solar air conditioning, solar hot water, solar water heater china
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How the quality of the door will again take root in rural solar water heater
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How the quality of the door will again take root in rural
from 2009, when the selected beginning home appliances, solar energy has experienced glory, also experienced a low point. The solar industry has never before received so much media attention, from late spring to Haining solar energy solar energy quality doors, to today\\ s home appliances solar AQSIQ found to be of inferior quality, and each time the solar industry have led to many of attention.
According to household appliances to the countryside policy, Shandong, Henan, Sichuan, Qingdao provinces and one city of the first pilot areas of home appliances to the countryside policies will expire in November this year. Policy of home appliances and other provinces will expire end of 2012, and whether to continue the policy of home appliances, there is no clear view. Time has been entered in August, a new round of home appliance products, and it starts bidding. Face of the new year, home appliances, solar energy companies should consider more than any other household electrical appliance enterprises.
Solar water heater industry compared with other products, is significantly different. Generally agreed that solar water heater is taking the \"encircling the cities\" strategy route, can be said that solar water heaters, the \"base\" or in the rural market. And home appliances to the countryside to the solar industry with a huge market opportunity, to make hundreds of solar water heater company policy of home appliances through the spring, in the rural market has been deployed. In 2009, the first solar water heaters, home appliances, the market for a great deal of confidence in the solar industry, when the market can use the \"surge\" to describe, in 2008, compared with 50% growth. But starting in 2010, the industry\\ s \"relying\" features emerged, poor sales, sluggish growth, annual growth rate of 15%. Into 2011, along with the increase in the narrowing of home appliance products, solar water heater industry growth rate to fall further. In June, recently released data, the national home appliances, home appliances sales nationwide in June of negative growth, down 4.40%. Another data from Sichuan, Sichuan accounted for total sales of home appliance products, the water heater products accounted for 4.6% of the total. Which estimates the proportion of solar water heaters will be lower.
Analysis, a few years, home appliances has been fully stimulate consumer demand in rural markets, and even to some extent, to the \"overdraft.\" Today, the industry faces is rural consumption will decline, lack of spending power. In the right place in it? In the rural market, whether it is a \"late spring\", or a continuous heavy rain, the sale of solar water heaters will affect promotional activities had to be suspended, but also need to delay the installation. This year the South started with a severe drought, water scarcity, and then continued for a long time to see the emergence of heavy rain, bad weather, the Yangtze River south of the main market for solar water heater is truly caused no small trouble: before farmers concentrating their efforts on drought on, and is then transferred to the flood, no time to focus solar energy companies what new products introduced, or what to do promotional activities.
Just at this point, a spot check AQSIQ, to solar water heaters in the \"quality gate\", \"near the famous\" and other keywords, but also with one that is \"unqualified.\" If the first two words for artisanal small businesses, then the latest word, it is for successful home appliances products. 8 disclosure failed water heater, both successful home appliances products, some of which is the business for three consecutive years of solar water heaters, home appliances business. It is puzzling that so far, no one company said the recall, or the public compensation scheme for consumers.
This revealed two messages, one level of the solar industry really needs to be improved quality, and second, in the face of \"crisis\" when the solar energy business is clearly not adapted to the \"home appliances platform\" of the high exposure in the face media and the public, but Yigaibuli.
Solar water heaters of varying quality, there are many small artisan enterprises, in order to save costs, lower prices for the market, a large number of non-quality assurance, no after-sales service of products flooding the market in rural areas. Early exposure of small businesses to cut corners CCTV, add fertilizer, to simplify the necessary processes, to create a thermal insulation performance is poor, short life of water heaters, and after the packaging manufacturer, into a so-called brand-name water heaters in the market for sale.
But it is family-owned business, now home appliance products, there have been problems of substandard quality, really worthy of reflection. Why does the product failed, according to reports, only one company to give an indirect response, saying there are differences in product design north and south of Jiangsu products, get the test result is not up to Beijing. See here, I believe the reader will have a question, does this product only in Jiangsu production and sales? Why a home appliance products, to a different place, there will be failure? Could it acclimatized it? That northern consumers how to ensure the safe use of it?
The quality control failure in the treatment of the attitude, almost all companies have chosen to \"play away.\" Or is not contact, or is vague. Intention is clear, is a major event of the minor ones, and do not want things become, the best people know better. For these small businesses, usually not very concerned about the industry, \"attack, retreat and defend.\" But once into the home appliance platform, to some extent, these enterprises have been put on a \"spotlight\" under. Whether it is the consumer, or the media, or the relevant government departments, their attention has improved significantly. The company is clearly not ready to accept such a role, how to deal with unexpected events, business is \"confused.\" Thus, the spirit of \"how much less than, less than do not say\" principle, the media and consumers turned away.
According to regulations, the enterprise of products of inferior quality, quality supervision departments at all levels should be ordered to make corrections immediately, recall of substandard products, and timely information to the public. At present, the AQSIQ released from the sample results have been gone for 10 days, failed companies still did not give any statement.
Beginning of the article mentioned, the end facing the policy of home appliances, then the policy after the end of the quality of products and service in turn to what path? Solar water heater for home appliances, after all, there are some basic indicators of product requirements, sales services, such as the number of outlets, telephone service, also has a provision. After the policy of home appliances, these provisions also come to an end, then chaos for the already solar water heater industry, companies whether they would consciously to control product quality and upgrading, construction and improvement of service it? raw material costs, labor costs rise, the solar industry as a whole is facing a crisis of confidence. Especially in the environment is not optimistic about the premise, home appliances and not to sell their products when promoted to the ideal number. Now, this is a question mark.
Reshuffle is inevitable. First quarter of 2009, new solar water heater Haining more than 300 enterprises, collector tube production line in the original 325, based on the expansion nearly 100, the final number of enterprises reached 1,100, while the country\\ s output growth rate of 30% per year The total number of enterprises in more than 6,000. Rapid expansion under the welcome expansion of the weakness of the market, multi-role, shuffling, almost inevitable.
This year, the collapse of SMEs heard the news, the current small and medium enterprises, are also facing a new round since the financial crisis, a widespread and serious operational difficulties. Since April 2011, Wenzhou business failures continue to burst with the boss \"escape\" the news. Manufacturing base in Guangdong Province has also appeared in \"closures\" stories. Financing difficulties, increasingly narrow living space, electricity shortage, labor shortage, companies face the second half of the pressure will be greater, for the solar industry, will soon be over the summer, autumn and winter is coming. SMEs must consider how to do next.
Sources said the second half of the State Council is expected to introduce a series of support policies for SMEs, the development of SMEs made available for a new way.
For the enterprises themselves, how to overcome adversity? In any case, the practice of sacrificing product quality is the most desirable one.
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Solar water heaters can coexist VS air Competition
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can coexist VS air? Competition?
Currently hot water energy-saving products on the market is mainly s and air source heat pump two, and the technology has now matured. However, this is a coexistence between the two in the end or competition?
Tense situation in the global energy, global warming a serious threat to human health of economic development and people\\ s lives today, countries in the world are looking for new alternative energy strategy, in order to achieve sustainable development and the development in the future to obtain a superior position. Hence the new energy industry, more and more attention, while the industry has become increasingly fierce competition. Currently hot water energy-saving products on the market is mainly solar water heaters and air source heat pump two, and the technology has now matured. However, this is a coexistence between the two in the end or competition?
More efficient than the solar air
Air source heat pump water heater, began to rise in recent years a new type of energy saving domestic water heating equipment, known as the fourth generation of water heaters. It works similar with air conditioning, are using the reverse Carnot cycle, the low temperature heat in the air together, and transferred into the water, thus obtained hot water.
This new type of collector devices are divided into ground source heat pump, air source heat pump and water source heat pump, ground source heat pumps present in the north of the application has been quite extensive, and the rise of air-source heat pump from the South, the rapid development of applications throughout the urban and rural areas. As a result of the principle of reverse Carnot cycle, heat pump water heater energy efficiency as high as 1:4, that is, a power input, the equivalent of four to get the energy of hot water, its efficiency is 4 times the electric water heater, 2 oil-fired boilers 3 times. Because you can work without direct sunlight, heat pump water heaters work more stable, and therefore a constant and significant energy savings. On cloudy days the solar water heater with electric wire auxiliary heating, air heaters can still work as usual, do not \"dependent on the weather.\" Annual energy savings from an integrated perspective, integrated air to water heater energy efficiency even more than the annual solar water heater.
Gold became well-known industry market portfolio
As the air to water heaters and solar water heaters advantages are very clear that if we air to water heaters, solar water heaters and combination, we can give full play to the advantages of both products, in the rainy day or night through the air source heat pump heating, full realization of the complementary energy, so that both products use hot water to form a golden combination. This combination can be said is the best combination of hot water solutions.
Today, the application of large-scale water projects, for the two power-saving and air can be a bridge product. In the past, the general engineering use only hot water solar water heater, solar water heater itself, because the results of a number of deficiencies, resulting in power consumption is very large. And now the air-source heat pump and solar water heaters can be effective to the combination of energy, eliminating nearly 70% of the ordinary solar water heater power consumption.
Solar water heaters and air source heat pumps are part of new energy products, belong to the state and the government support the industry, coupled with the advantages of both the product itself, has been welcomed by the world, believe in the future will usher in the golden age of their development.
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Tagged solar air conditioning, solar hot water heat, solar water heater manufacturers
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2011-2015 China solar water heater market analysis
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2011-2015 China solar water heater market analysis
Since the 1990s, China\\ s solar water heater industry to maintain rapid growth for 10 years. In 1992, China\\ s annual production capacity of solar water heater industry, only 50 million square meters by 2005, China\\ s solar water heater output has exceeded 15 million square meters, 6.4 million square meters in 2000, more than two times. Industry output value of more than $ 15 billion.
At present, China has become the world\\ s largest producer of and solar water heater market, the industry has become the only scale in the production and use of a world leader on renewable energy industry. With the solar thermal industry competition becomes more intense, long-term development vision of the solar companies began to work on the most important innovation, both in the core technology or appearance of the image, whether it is the collector technology, insulation technology or energy-efficient technologies, and building integrated solar technologies have made rapid development and progress.
Retail sales in 2010 exceeded the national water heater industry 46.5 billion yuan, sales more than 28 million units sold. Among them, total retail sales of solar water heaters more than 20 billion, a larger proportion. January 1, 2010, \"domestic controller\" officially promulgated national standards. In the same year, \" with the rubber seal\" is officially implemented. Also solar water heater energy efficiency standards by the end of October 2010 all the work, to the State energy efficiency labeling management center trial. Implementation of these standards, raise the threshold for market access of solar water heaters, regulate the industry. These files are mainly semi-forced to choose as the core market power, although effective in the short term and can not produce immediate results, but in the long run, will inevitably lead the industry forward to a higher level
At present, China\\ s urban and rural residents of the rapid growth in demand for hot water bath. In rural areas and small cities, solar water heaters have become to improve people\\ s quality of life and building a moderately prosperous society in an important tool. With the development of high-temperature solar water heaters and building integrated solar technology has improved, the application of solar water heaters provide hot water is no longer confined areas, are gradually heating, cooling, drying and industrial applications, the direction of expansion. China\\ s solar water heater market has great potential.
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Tagged evacuated tube solar hot water, non pressure solar water heater, solar water heater china
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Scale solar water heater on a regular basis is important to clear
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Scale on a regular basis is important to clear
Hot days, and gradually increase the frequency of use, along with some of the problems can also enable the public to worry about endless. Recently, the area who lives overseas Greentown area Jianxi Ms. Yang and Ms. Wang said, his home water heater, Sheung Shui, time is getting short, a smaller amount of water, the water does not look clean, it is Editor\\ s Note ?
Clean out a lot of scale
Reporters follow a solar water heater repair company managers and Master Huang Ping Yingjie to go see. Feng Yingjie in the roof, after some checking, smiled and said: \"The solar water heater in your house \\ bath\\ it!\"
Water heaters as well as \"bath\"? Ms. Yang, Wang revealed the surprising look.
Master Huang smiled and said nothing. I saw one by one, he carefully put down the vacuum tube removed, the inside of the water poured out, and washed repeatedly with water. Glass cleaned, turn the water tank. Fengjing Li and yellow together to hold the master tank, so rocking back and forth, inside the water from the nozzle flow. This reporter saw tanks from inside the glass tube and the water muddy bear out, mingled with large scale.
Finally, clear out a full scale can hold more than half of washbasin. \"Is the scale occupied the position of the tank, water tank filled with water less, and sometimes not on the full.\" Master Huang said. Slowly, over clear scale, the water inside the tank has become clear the.
Usually have to wash with 3 years
How is there so much water heater inside the scale it?
Feng Yingjie has been engaged in solar water heater repair five years, he said, the water is relatively hard Luoyang (the city\\ s main drinking water is groundwater, mineral content), a long time, the natural scale inside the tank piled up. Scale than the two things occur:
First, plug the vent. Feng Yingjie said vent in the bottom or top of the tank, the role is to balance the pressure difference between inside and outside the tank, once blocked, the internal heat can not be discharged, will be increasing pressure, the tank will be broken up. \"For almost a tank around $ 600, better and more expensive, we replaced this year has given dozens of tanks up.\" Ping Yingjie said.
Second, more scale, the less water it. \"Originally basin of water can hold 5, now only hold 3 basin of water. The shower water naturally smaller.\" Ping Yingjie said.
Feng Yingjie said that in general the solar water heater with 3 years, you need to clean the scale, and this can also extend the life of water heaters. Cleaning prices, according to the size of the solar water heater is slightly different, for 60 yuan to 90 yuan.
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Resolve the next few years China solar water heater market trends
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Resolve the next few years, China solar water heater market trends
According to statistics, since the 1990s, China\\ s solar water heater industry to maintain rapid growth for 10 years. In 1992, China\\ s annual production capacity of solar water heater industry, only 50 million square meters by 2005, China\\ s solar water heater output has exceeded 15 million square meters, 6.4 million square meters in 2000, more than two times. Industry output value of more than $ 15 billion.
At present, China has become the world\\ s largest producer of and solar water heater market, the industry has become the only scale in the production and use of a world leader on renewable energy industry. With the solar thermal industry competition becomes more intense, long-term development vision of the solar companies began to work on the most important innovation, both in the core technology or appearance of the image, whether it is the collector technology, insulation technology or energy-efficient technologies, and building integrated solar technologies have made rapid development and progress.
Retail sales in 2010 exceeded the national water heater industry 46.5 billion yuan, sales more than 28 million units sold. Among them, total retail sales of solar water heaters more than 20 billion, a larger proportion. January 1, 2010, \"domestic controller\" officially promulgated national standards. In the same year, \" with the rubber seal\" is officially implemented. Also solar water heater energy efficiency standards by the end of October 2010 all the work, to the State energy efficiency labeling management center trial. Implementation of these standards, raise the threshold for market access of solar water heaters, regulate the industry. These files are mainly semi-forced to choose as the core market power, although effective in the short term and can not produce immediate results, but in the long run, will inevitably lead to a higher level of the industry forward.
At present, China\\ s urban and rural residents of the rapid growth in demand for hot water bath. In rural areas and small cities, solar water heaters have become to improve people\\ s quality of life and building a moderately prosperous society in an important tool. With the development of high-temperature solar water heaters and building integrated solar technology has improved, the application of solar water heaters provide hot water is no longer confined areas, are gradually heating, cooling, drying and industrial applications, the direction of expansion.
Solar water heaters sold to the Southern Hemisphere
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sold to the Southern Hemisphere
In the opening before, and we revisit a story on shoe.
There is a shoe to shoe market study on an island, he saw a barefoot island residents for generations of traditional practices, they left disappointed. Soon, there is another shoe to the island, when he learned the habit of the islanders do not wear shoes pleasantly surprised that the great potential to open up mining. Sure enough, through the efforts of his great success, earning pours. This story gives the inspiration that ideas determine.
At present, China has entered the summer, the weather is getting hot, and sales of market has steadily increased as the temperature into the off-season. Reporters visited several dealers in Jiaxing, found on the streets heat wave, solar water heater sales outlets was extremely lonely. Solar water heaters have a three-year business process owner, said: \"The weather heats up, and now buy fewer and fewer people of solar water heaters, I sold this month as sales of less than half of the winter.\" Indeed, the summer season, People drop in demand for hot water, solar water heaters on demand will drop down. However, the \"off-season sales of solar water heater industry,\" This is a sales plummeted excuse it? As the story begins talking about the same: \"ideas determine.\" Since the solar water heater is one of the reasons for poor sales because of the weather, so why not find a way out from a weather point of view?
As we all know, the Earth\\ s revolution, the sun moves back and forth between the Tropic of Cancer in the South, when the northern hemisphere in the summer, corresponding to the southern hemisphere winter. Sales of solar water heaters in winter season is just, then why not put solar water heaters sold the southern hemisphere? Telephone contact with the reporter has done well in the export of domestic solar manufacturers, their sales in the Southern Hemisphere has remained stable, and some companies even steadily. Reporters have learned that in the end of July this year when the new international energy market Tongxiang received a number of international officials to exchange delegations, including many officials from the southern hemisphere. It is understood that the African continent in the southern hemisphere HENDY ZEINAB MAHMOUD MOHAMED Egyptian officials on the new international solar energy market is very satisfied with the product trading platform, and said to introduce new international energy markets to Egyptian local government to achieve government procurement, the Chinese solar water heater to the the southern hemisphere.
In the past few years, solar water heaters by the policy of home appliances have been catch, according to the media, the recent news: After 3-4 years of implementation, has played a leading home appliances consumption, the role of profits benefiting the agriculture, is expected to early termination. Now, the solar industry is facing reshuffle, to household appliances to the countryside as a guide to open the rural market has become saturated, most of the set their sights on the city and overseas. Ideas determine how to properly take the city and the overseas business is worth pondering the road. Reporters in the new international energy markets international department interview that: At present, the new international energy market in Germany, Britain, the United States has established overseas offices, and there are often overseas procurement information into the market; the same time, the international new energy ads in foreign markets have achieved good results, many foreign buyers come here. The end of July this year, government officials through the media and other channels is also a preliminary understanding of the international new energy market, are attracted to visit.
Face many difficulties in the solar water heater, and even the weather has become an obstacle to one of the cases, relying on a global market perspective, it opens another for their own sales channels, opened up another piece of the market. Sales market share of sales has nothing to do with territory size, as long as solar water heaters sold out, you can return the funds to big business. \"Solar water heaters sold to the Southern Hemisphere\", selling not only is the water heater, which contains a new idea is to seek a new way.
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The installation of solar water heater pipe loop
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The installation of pipe loop
One drawback is that solar water heater hot water must be imported from outside or inside the top floor, a long waterway, pipeline usually accumulates a greater amount of cold water, the user can not immediately have an open hot water faucet out. To overcome this drawback, the use of pipeline loop is a common approach. Pipeline loop\\ s role is to replace the tank in the cold water pipe, hot water into the pipe, back into the cold water pipe in the solar tank, making in all hot water pipes, so users can get hot in time the. Figure 4-3-8 is the basic loop diagram.
The basic diagram of Figure 4-3-8 cycle
Now due to the development of solar technology, people invented the hot water loop controller, you can easily achieve the purpose of recycling. Recycling programs are generally used in three ways: manually cycle through the program, the timing cycle of timer control program, tap the control of real-time cycle options. As follows:
1, manual cycle program
Circulation pipe installation installed a circulating pump, when the user needs hot water, close the circulating pump switch, water pump will pump into the heat pipe solar water tanks, making the pipeline is full of hot water, so the user an open hot water tap, can quickly get hot water. Shown in Figure 4-3-9.
Figure 4-3-9 manual cycle diagram
2, the program cycle time
Figure 4-3-10 is an effective cycle timer is started by the waterways schematic:
Figure 4-3-10 start the cycle timer schematic
Principle Explanation: The program is controlled by the cycle timer cycle, when the user set the Timer 1 is turned on, open loop control solenoid valve 2, pipes in the water pressure is reduced to 1 kg, and the water signal to the pressure switch 3, the pressure switch because the pressure is less than the starting pressure (usually in the 2 kg) and connected, the pump 4 starts, down to pump water, so the cold water pipe to be squeezed into the solar tank. At this time, cycle time controller based on the user\\ s settings can delay a period of time, so that the pump continues to work to set the time, at which time the user opened the taps soon out of hot water.
Procurement cycle time controller street electrical stores are multi-time controller, a control generally have 10-16 hours, the user can set its own conditions to cycle time, more than 10 segments have sufficient time to set. Controller cycle time set in the cycle time, the average user turn on the tap, and soon you can get hot water.
3, real-time control loop program taps
Figure 4-3-11 is an effective waterway any tap from the start of the loop diagram:
Principles of explanation: When a user opens any water switch 5 (tap), the flow switch 3 opens, and the flow signal to the loop controller 1, 4 open loop controller will pump down the water pump, and solenoid valve open cycle 2, so the cold water pipe to be squeezed into the solar tank. At this time, the user closes the tap, loop controller based on the user\\ s settings can delay 20-160 seconds, set the pump to continue to work until the time, so cold water is pumped into the solar tank, so hang in charge of hot water are hot water, the user opens the tap water out quickly. At this time the hot water pipes will not immediately cools, it should wait until the cold water pipe in the loop again. Given this situation, the controller design cycle time interval of 30 minutes, during which the user turn on the tap, the solenoid valve 2 will not open, recycled water will not flow into the solar tank.
In general, household circumstances, few people with water, the water a long time interval, the time is also more irregular, more appropriate to start using the tap. In the collective environment, the water more time to focus on, such as factories, hotels, etc., were also more water in the water during the water is always water flow, the use of more appropriate time cycle.
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Pump hot water with the installation of solar water heaters
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Pump hot water with the installation of
Living in the attic of the user, because users of solar water tank with tap water level difference is very small, not enough water pressure, water quality, and can not meet user requirements, in this case, it is necessary to use hot water pump to provide hot water. The method is suitable for small water pressure, need to boost the situation.
Living in the attic of the user, because users of solar water tank with tap water level difference is very small, not enough water pressure, water quality, and can not meet user requirements, in this case, it is necessary to use hot water pump to provide hot water. The method is suitable for small water pressure, need to boost the situation.
When the lower solar installation position or the top floor of the user, if the water level in the tank water taps than 5 meters above the outlet, the water pressure is not to 0.5 kg, the user will feel very slow water flow, which is heating the water poor quality. Change the way is to add a booster pump, so that water pressure can be up to 2 kg, significantly improved the quality of water.
Many different types of booster pump, but at higher temperatures, performance, high quality requirements. Relatively good results Ville Germany, Denmark, Grundfos, South Korea, Hanjin, etc., such as Shanghai China Xishan, Guangzhou and other lower quality format too, but can also be used. Hot water supply pump is automatic, once the user opens hot water tap, water pump is automatically turned on, pressurized water supply. These two types of pumps, water flow and pressure on open, its principles will be described in later chapters. Shown in Figure 4-3-6.
Figure 4-3-6 with hot water pump schematic (flow switch)
Principles of explanation: When the user opens the hot water tap, the down the pipe in the shed, start the water flow switch 5, the flow switch connected to the pump power, pump water to the front of the user Department. The most commonly used pumps in two forms: swing-type water flow switch and pressure switch, the specific principles in detail in later chapters. Using pressure-type solar water pump can be placed in the program lower than the position of the tap water, such as the grass in the upper villa.
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Ushered in flat-panel solar water heater technology upgrade transit
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Ushered in flat-panel technology upgrade transit
Currently, a vacuum tube solar and the solar panel on the market share battle, is quietly brewing in the industry. Vacuum tube solar panel and solar energy, solar collectors, as the current two basic forms, the shift in the contradiction between the two determines the competition.
Solar Energy Co., Ltd. Deputy General Manager Liu Jie Sen said the rain, now flat solar antifreeze already solved the problem. Flow using copper pipe, cover the use of low-iron tempered glass production, the use of a secondary circulation system and antifreeze fluid heat transfer medium flat plate solar collectors can withstand large eggs fall from the sky hail from the days of combat, and not afraid of cold run, minus 30 ? still work as usual.
Norit relevant person in charge of solar energy, , frost and heat are the two core technologies with independent intellectual property with a real vacuum tube collectors compared to flat plate solar collectors for thermal insulation performance is poor. Specifically, solar water heaters can be divided into low, medium temperature, heat three systems, the low-temperature systems, flat-plate collector with vacuum tube collectors is almost the same, but the water temperature reaches 60 degrees Celsius, the flat-plate collector will encounter to the bottleneck, that is, at this time of the endothermic heat speeds up to speed and the mean temperature is difficult to continue to improve, while the vacuum tube water heater is not the problem, so the mild temperatures in the system, the vacuum tube will have more advantages.
To solar energy, general manager of Changzhou Sheng Mei Jianzhong that the solar panel does not have independent intellectual property rights, although many domestic companies claim that their flat-panel technology is self-development, but in fact most of the small improvement of foreign technology. Flat in foreign advanced technology of solar energy, rather than domestic. Plate to achieve the technical parameters, the vacuum tube will be more outstanding. However, with the accelerated process of urban development in recent years, multi-layer and high-rise buildings mushrooming of installation and use of the formation of challenges. As the multi-storey buildings and high-rise building roof area is not enough, should adopt the balcony-type or wall-type solar water heater, and vacuum easily broken, easily aging sealing gasket leaking, the balcony or wall installation, great security risk.
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Tagged pressurized solar water heater, solar water heater china, solar water heater manufacturers
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