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Editor's Note: On the morning of January 31, the China Renewable Energy Society and the authoritative experts of the Chinese Academy of Building Sciences from Beijing gave more than 200 relevant people in Xingtai City including architectural design, town planning and construction enterprises. Lecture on Solar Building Integration Technology - This marks the beginning of the implementation of the "Solar Building City" in Xingtai City. Can Xingtai City have any difficulties and problems in the process of building the first “solar building city†in the province? In-depth interviews were conducted with questionable reporters.
Who pays for the increased cost?
At the beginning of the new year, Xingtai City listed the first “solar building city†in the province as the No. 1 document of the municipal government. It began to be fully implemented as the key work of the municipal party committee and the municipal government – ​​this caused strong repercussions in the society of Xingtai City. .
On December 20 last year, the Xingtai City Construction Bureau issued the Notice on the Comprehensive Promotion of Application Technology of Solar Water Heating Systems in Civil Construction Projects (hereinafter referred to as the “Noticeâ€), which stipulates that since January 1, 2007 The low-rise (villa), multi-storey residential and hotel hotels newly built, expanded and rebuilt in the city will fully promote the application of solar water heating system and building integration technology, and actively encourage and support the application of solar heat in middle and high-rise buildings, high-rise residential buildings and other public buildings. Water system and building integration technology.
The "Notice" was issued, and the local real estate developers questioned: The unified installation of solar water heating system on the building will inevitably increase the development cost. According to the calculation, it will increase 20 to 30 yuan per square meter. Who is this part of the money?
In response to questions from developers, Xingtai City promised in Document No. 1 that for solar energy building integration projects that meet certain standards, it is necessary to give a 50% discount on the city's supporting fees – meaning that developers can be less per square meter. Pay 13.3 yuan. At the same time, for the related projects of “Solar Building Cityâ€, relevant departments should give priority to ensuring the land use of the project, prioritize the management of key projects, simplify the examination and approval procedures, improve the efficiency of work, and provide quality services.
"We must continue to improve and formulate support policies for solar energy integration, preferential concessions, reductions and exemptions, and support that can be supported." Yin Mengqian, deputy director of the Xingtai City Construction Bureau said, "A few days ago, the Ministry of Finance allocated 2006. The annual special fund for renewable energy building application is 1.0368 billion yuan, focusing on solar energy building integrated solar energy supply domestic hot water, heating and cooling, photoelectric conversion, lighting and other demonstration projects. 25 demonstrations in Beijing, Inner Mongolia, Liaoning, Shandong and Shenzhen The project is supported by this fund. This year, Xingtai City will organize the implementation of the solar energy demonstration project and actively strive for the state's special funds. If the demonstration project is accepted and accepted by the relevant state departments, the development cost will be further reduced."
Can you approach ordinary people?
Professor Zheng Ruicheng, Director of the Thermal Utilization Committee of the China Renewable Energy Society from Beijing, is an expert in solar building integration research and holds lectures every year throughout the country. She told reporters: "Solar use is difficult to promote in some areas of China, which has a certain relationship with the living habits of local residents. For example, some families who use electric water heaters and gas water heaters for a long time know little about solar energy. Will not choose a solar water heating system."
“Xingtai City is a region with abundant solar energy resources. The average annual sunshine time is 2800-3000 hours, the sunshine rate is 50%-70%, and the annual solar radiation is 5900MJ/m2. As early as the 1970s, local residents At the beginning of the application of solar water heaters, about 80% of the newly built residential areas in Xingtai City have installed solar water heaters. Many schools and hotels use centralized solar water heating systems. Xingtai City is the city with the highest solar energy utilization rate in Hebei Province. Song Wen, the deputy mayor of Xingtai City, proudly said, "Xingtai City has to build the first solar energy building city in the province, which has a broad mass base. This is also an important factor for the municipal party committee and the municipal government to make up their minds. ."
“Solar water heating system does not need electricity or coal, and its service life is 10 to 15 years. The cost of expenditure can be saved in two or three years. Saving money is a prerequisite for ordinary residents to accept solar energy. From saving energy and protecting the environment. From the angle analysis, the solar water heater with a lighting area per square meter can save 500 kilograms of coal per year, which can reduce emissions of sulfur dioxide, dust and other 700 kilograms. We will further promote the promotion of solar energy building integration projects. And guidance to enhance the environmental protection and energy conservation awareness of ordinary residents." Song Wen said.
"From the perspective of architecture, the unified design and installation of solar water heating system is safer and more reliable than the installation of users in the past, which can greatly improve the utilization of solar energy, and can also make the appearance of the building neat and beautiful." He Tao, a senior engineer of the hospital, said, "The Notice issued by the Xingtai City Construction Bureau stipulates that the construction unit should design the solar water heating system integrated with the construction project at the same time as the construction project to achieve solar water heating system and construction engineering. Synchronous design, simultaneous construction, simultaneous acceptance, and simultaneous delivery – this will allow Xingtai City to take fewer detours in the process of building a solar building city.â€
Can the local industry meet the demand?
According to statistics from the Xingtai City Urban Construction Bureau, the newly built housing area in Xingtai City last year was 1.8 million square meters. If all the counties and districts in Xingtai City were added, the newly added housing construction area was more than 3 million square meters. According to the scientific method, He Tao implements the solar energy building integration project, which requires about 1 square meter of solar water heating system per 100 square meters of building area. This means that if the entire Xingtai area is newly added The area is fully integrated with solar energy building technology, and it needs more than 30,000 square meters of solar water heating system per year. He can't help but question: Can the production capacity and production technology of local solar energy companies support huge market demand? ?
“At present, Xingtai City has 10 solar water heater manufacturers, 15 accessory companies, and 15,000 employees. The annual production of solar water heating system lighting panels is 180,000 square meters, accounting for half of the province's total output, which can guarantee the local market. The demand for high-tech and high-quality products, such as light source and Sanhuan, not only meets the needs of the local and domestic markets, but also enters the international market and becomes a well-known large enterprise in China.†Song Wen’s introduction dispelled He Tao The doubts, "the upstream raw material of solar lighting panels is monocrystalline silicon, and Jinglong Group of Ningjin is currently the world's largest solar monocrystalline silicon production base, which is a unique advantage for Xingtai's solar water heater industry development."
At the Xingtai College in Hebei, the reporter saw the solar water system installed by Hebei Light Source Solar Co., Ltd. According to the logistics staff of Xingtai College, the monthly cost of boiled water is 18,000 yuan. Since the solar water system was installed last year, the monthly cost is only 3,000 yuan.
“Our self-developed solar water system with independent intellectual property rights passed the provincial new product appraisal last year, and the technical standards have reached the domestic and international leading level, filling the domestic gap. The centralized solar water heating project has been installed in 10 provinces and cities and Vietnam. Thailand, Denmark and other countries and regions. Xingtai's solar energy enterprises are fully capable of undertaking the task of building a 'solar building city'." Li Chengbin of Hebei Light Source Solar Co., Ltd. is full of pride.
Looking forward to the future, Xingtai will also build a “solar industrial park†that integrates solar energy production, technology research and development, pilot demonstration, equipment manufacturing, and popular science education to form a high correlation between solar photovoltaic, solar thermal, heating, and refrigeration. The industrial agglomeration area will drive the expansion of the solar energy industry group, and at the same time extend the solar energy industry chain and gradually form a solar energy industry cluster – ultimately achieving a win-win situation for Xingtai City's sky blue water and solar energy industry.
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