subject: Flat Solar is expected to usher in 2010, turning over the years - solar energy - solar power industry [print this page] Flat Solar is expected to usher in 2010, turning over the years - solar energy - solar power industry
As a typical representative of low-carbon economy to become the solar industry, the country recently concluded "two sessions" hot topic, concern is that many of the traditional vacuum tube solar domestic enterprises have begun to quietly test the level of solar panels. The industry believes that with the constant breakthroughs in key technologies, domestic solar energy and the growing trend for building integration, was vacuum tubes, "suppress" years of flat solar water heater is expected to usher in 2010, turning over the years.
Technical bottlenecks lead to slow development
Learned, in the 20th century, early 80s, Yunnan, Guangdong, some companies have also introduced foreign technology of flat solar energy products, self-production and marketing in China. However, because these flat technically defective products, quality tests, the services they can not keep up late, a large number of products on such a "rotten" in the roof. It is precisely for antifreeze, pressure and other key technical limitations, then solar water heater is only suitable for use in the better areas, which led to the marketing companies stick to the concept of MERCOSUR, there is no product innovations, market expansion in power.
Suffer from technical defects, quality problems and the use of time constraints and other factors, Tsinghua Solar, Temple, Emperor Ming, force a large number of domestic solar water heaters, etc. Norit, leading businesses, are vacuum tube collector based products This also makes the tube quickly won the overwhelming majority market share.
The Yangtze, Beijing Solar Energy Research Institute of the original Greek in that there are two major reasons for the flat panel solar water heaters in the country ignored: First, China's solar water heater, whether domestic or collective use of the system (water works), has been in use directly solar collector heat water in the traditional way, flat panel solar collector in the water to freeze not only affected the normal operation of collector and collector pipes leading to split up. The vacuum tube solar water heater because the winter is not emptying the water in the case of basic non-frozen or not frozen and (special circumstances such as snow, cold may also be damaged by frost), so by the market. All-glass vacuum tube water heater, followed by cost of production greatly reduced the past 10 years. All-glass vacuum tube reduced more than 5 times, more than twice the lower water tank. At the same time flat panel solar collector did not have much lower production costs. Five-Star Solar Co., Ltd. Chairman Hu Guangliang
frankly, from the market in terms of applications and clients, flat panel solar collector used in large-scale projects have an advantage; on consumer products, the domestic household products are generally the direct heating method little indirect heating applications, flat panel solar collector frost higher prices, coupled with flat-type applications in the home, specifications too little choice, thereby affecting the flat-plate collector in the market to promote the speed.
Key technology should be improved
Industry believes that the popularity of the vacuum tube solar water heater, the plate as the second generation of technical deficiencies do exist. "Over the last 10 years, no significant progress, a considerable number of product performance and quality is not satisfactory, basically still at the level of 80s of the 20th century." Solar Energy Research Institute, Beijing, Ho Tsz-year senior said.
He Zhinian that although China has established the technical conditions for domestic solar water heating system of national standards, 90 are also amended the relevant flat panel solar collector technical conditions of the national standard, but with the relevant international standards or European Standard contrast, there are still a large gap.
Flat solar water heater in a particular company officials recognized that China and abroad, the gap between flat water heater one of absorbing coating, the second is in the control system, the third time in the solar area.
Industry experts view is more consistent, flat water heater is the biggest technical issues antifreeze, which is affecting the area north of the Yellow River, especially in cold areas to use deadly bottleneck. This, in Jiang Xi said that in the region below the freezing winter weather conditions, be sure to use antifreeze, water secondary heat transfer, "European home and collective use of the system (water works), use antifreeze in the flat pump drive solar collectors and thermal storage tank heat exchanger heat transfer between the circulation.
