The hottest photovoltaic power station is in the m

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The photovoltaic power station is in the midst of the "glass jacket" energy-saving 60%

next to the bird's nest (National Stadium) and the water cube (National Natatorium). A building with elegant roofs and crystal clear glass curtain walls is the National Stadium, one of the three main venues of the Beijing Olympic Games

as one of the main designers, Kangxiaoli, deputy director of the sports architecture studio of Beijing Institute of architectural design and research, was quite low-key in an exclusive interview with China industry news a few days ago: "we don't focus on competing with the first two landmark buildings, but use mature and rational new technology to create an introverted and implicit gymnasium, and truly implement the three concepts of high-tech Olympics, Green Olympics and people's Olympics."

in fact, as one of the three national venues in the Olympic project, the National Stadium, which is willing to be a green leaf, does embody the concept of "green" in every detail

photovoltaic power generation demonstration project is closely integrated with the building

entering the National Stadium, the leading visual impact is undoubtedly its roof, with five long glass tops arranged at intervals. These glass shells are equipped with solar panels. According to reports, by installing solar panels on the roof of the gymnasium, we have the ability to promote the overall development of the industry and the local glass curtain wall in the south, which can not only shelter from the wind and rain, but also provide 20000 square meters of lighting for the underground garage of the gymnasium

the solar photovoltaic power generation system has 1124 solar cell modules, each of which is 120 cm long and 50 cm wide, with a rated peak power of 90 watts and a peak rated voltage of 18 volts, distributed on the roof and the south facade. There are 824 monocrystalline silicon solar cell modules on the roof to form five solar cell arrays with a width of 2 meters and a length of 76 meters. 300 solar cells on the south facade are inlaid into the double-layer glass of the facade. The power generated by the system will be incorporated into Beijing power. Compared with the independent solar photovoltaic power generation system, this set of equipment does not need battery energy storage devices, so it has the advantages of low power generation cost and high efficiency

according to the introduction, this solar photovoltaic power generation system can provide 9. 70000 kwh, with a design life of 25 years. Compared with thermal power generation, this set of equipment can save nearly 1000 tons of standard coal with a year-on-year increase of 43.5%, and the emissions of carbon dioxide and sulfur dioxide can be reduced by 421 tons and 19 tons respectively

it was learned in the interview that, unlike the previous solar panels and inverters required for the construction of solar photovoltaic power stations in China, most of the key equipment used in the project are domestic in principle

as the first project to install solar energy projects in the Olympic project, the more important demonstration significance of the National Stadium is that it has effectively promoted the new technology of photovoltaic power generation in China to step out of the laboratory and move towards industrialization

zhuweigang, deputy general manager of Beijing corona science and Technology Co., Ltd., who is in charge of this project, said that the biggest feature of the National Stadium 100 kW photovoltaic power station project is that photovoltaic power generation technology really realizes the close integration with buildings. At the same time, the construction of the demonstration project not only reflects the support of the government, but also improves the awareness of the whole society on photovoltaic power generation, which plays an important role in promoting the industrialization of solar photovoltaic power generation

low radiation glass curtain wall can save more than 60% energy. 1

if you look at the National Stadium from the air, you will find that the curtain wall design of the stadium is novel and complex. The East and West facades of the main pavilion are vertical glass curtain walls, and the dent depth measured by the displacement of the South and punch is the experimental result. The North facades are inclined glass. In fact, this is not commonly used for beautiful glass walls, but energy-efficient materials. Kang Xiaoli introduced that the curtain wall of the National Stadium is installed in three categories: clear frame curtain wall, point curtain wall and aluminum plate glass, with a total area of about 1. 90000 square meters. All the glass is hollow Low-E (low radiation) glass, which has the effects of heat preservation, heat insulation, UV protection and so on. This kind of glass can save energy by more than 60% in summer and more than 70% in winter

considering that the competition hall and warm-up hall are used for training and national fitness in a large number of periods, the requirements for indoor light environment and thermal environment are different from those during the competition. Therefore, there are also openable high windows on the East and west sides of the venue, which can make full use of natural ventilation and lighting for training and fitness at ordinary times

in terms of waste recycling, the buried depth of the basement of the National Stadium is about 8 meters, and the anti floating water level is negative 1 meter. Materials with large bulk density are required to resist floating and pressure weight. If natural sand and gravel are used, at least 80000 tons are required. Therefore, the foundation of the venue adopts the beam raft foundation with good economy, and uses the 3million tons of industrial waste steel slag accumulated by Shougang to replace the concrete and other materials as anti floating weights to backfill the space between the beam raft foundation bottom plate and the basement building ground, which not only saves energy, consumes waste, realizes sustainable development, but also greatly shortens the construction period, which is conducive to ensuring the waterproof quality of underground projects, The durability and service life of the building are enhanced

at the same time, the water source heat pump technology of the national stadium also makes full use of renewable energy. Water source heat pump is a kind of high-efficiency and energy-saving air-conditioning system that utilizes shallow geothermal resources in the ground to provide heat and refrigeration. By inputting a small amount of high-grade energy, the water source heat pump realizes the transfer of low-temperature heat energy to high-temperature heat energy. Generally, the water source heat pump consumes 1kW of energy, and users can get more than 4kw of heat or cooling capacity

the National Stadium is equipped with five hd660b water source heat pump units. The unit is mainly responsible for the heat dissipation of the air conditioner for the spectator seats in summer, the heating of the inner area during large-scale competitions in winter, and the heating in winter at ordinary times, providing heat source for domestic hot water, etc

as one of the three main venues of the Beijing Olympic Games, the National Stadium mainly undertakes competitive gymnastics, trampoline and handball during the Olympic Games. The project consists of the main building of the gymnasium, a warm-up hall close to it and the corresponding outdoor environment. The total floor area is 6. 87 hectares, with a total construction area of 8. 0.09 million square meters, can accommodate spectators 1. 80000 people. After the Olympic Games, the National Stadium, as a first-class sports facility in Beijing, will become a public activity center that integrates sports competitions, culture and entertainment and provides multi-functional services

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