The energy saving potential of the Olympic venues is huge, and the green lighting is remarkable.
The ongoing Beijing Olympic Games has enabled the countries of the world to re-recognize China. Beijing has fulfilled its solemn commitment to the IOC and the people of the world with practical actions. The Green Olympics and the Olympic Games are particularly good.
In terms of new energy utilization and environmental protection, the Beijing Olympic venue builders have moved their minds. More than 3,000 water cubic air pillows and new LED flexible lights can save tens of thousands of kWh per day. The power consumption of the Bird's Nest is 20,000 kWh, which is equivalent to the electricity consumption of 10,000 households. The power consumption of the Olympic Games and the Paralympic Games exceeds one million kWh. These power loads are not only provided by North China Power Grid, but 20% are from non-power. Coal power. On the side of the Guanting Reservoir, 100 kilometers away from Beijing, the electric energy source generated by the wind is continuously transported to the Bird's Nest and the Water Cube.
In addition to wind power generation, 90% of lawn lights and street lamps in the Olympic venues come from solar energy. The National Sports Tasting National Stadium, Fengtai Softball Stadium and other seven venues, equipped with solar grid-connected photovoltaic power generation system, with a total installed capacity of more than 500 kilowatts, annual power generation of more than 500,000 kilowatt hours.
Global warming has become an important obstacle to the sustainable development of human economy and society. Controlling pollutants and greenhouse gas emissions is a major concern for us as a responsible big country. The achievements of the Olympic venues in energy conservation and emission reduction have given us great confidence. As long as we attach great importance to the development of new energy sources that replace coal power, it is feasible from theory to practice.
In 2005, China's power generation exceeded 500 million kWh. However, 80% of China's power generation is based on coal. It is not difficult to see from the current situation of China's energy utilization that the rising temperature of the earth is caused by humans burning coal. Therefore, it is the last word to reduce carbon dioxide emissions and reduce the use of non-renewable resources such as coal and natural gas. To this end, we should fully develop and utilize new energy sources, such as solar energy, wind energy, biomass energy, hydrogen energy, tidal energy, water energy (small hydropower), etc., each person sweeps the snow in front of the door, multi-pronged, and blocks greenhouse gases. At the source. In these respects, there are many successful cases in China.
Let's look at an example of biomass energy utilization. In January 2008, the world's largest Mengniu biomass biogas power plant was officially connected to the national grid in Huhhot. This biomass power plant with a total investment of 45 million yuan uses methane gas produced by anaerobic fermentation of cattle manure in the farm. Methane and natural gas components are basically the same. In the past, they were released into the atmosphere as greenhouse gases during the breeding process. Farm manure pollution is also a major problem in the aquaculture industry. The operation of biomass power plants has solved the above problems and brought considerable benefits. Economic and environmental benefits. Mengniu has a power generation capacity of 10 million kWh and directly enters the national grid. It can reduce carbon dioxide emissions by about 25,000 tons per year. As a by-product of power products, the plant also produces 6.5 million megajoules of residual heat, 13,000 tons of organic fertilizer, and 170,000 tons of biogas. If you make full use of organic fertilizers and biogas residues, returning biogas to the field and replacing fertilizers, you can reduce the amount of greenhouse gas emissions, reduce fertilizer pollution, and protect the ecological environment.
In fact, biomass resources are not limited to large-scale farms. Urban waste is also an important resource, and it can also be used to generate electricity and turn waste into treasure. Jinan City uses biogas generated from landfills to generate electricity with a designed installed capacity of 3,500 kilowatts and an average daily power generation of 70,000 kilowatt hours. The project also provides a model for the future utilization of urban garbage resources.
Let's look at the application results of solar photovoltaic power generation. In November 2007, Asia's largest grid-connected solar photovoltaic power station was completed in Shenzhen Expo Park and entered operation. This photovoltaic power station (with a total capacity of 1 MW) installed in the comprehensive exhibition hall, flower exhibition hall, management center, Southern Tourist Service Center and Dongshan Slope in the North District has an annual generating capacity of 1 million kWh and still operates after 20 years. Power generation capacity. The power station not only provides electricity, but also strengthens the structure of the building, as well as the aesthetic effect. The building envelope provides sufficient area for the photovoltaic system, eliminating the support structure of the photovoltaic system and saving the land; the photovoltaic array can also replace the conventional building materials, saving construction installation and material costs.
At present, the main problem of coal alternative energy development is high cost. The essence is that the key technologies are not broken or the scale is not big enough. If we pay attention to the strategic level of environmental protection, there is still a way to solve the cost problem. In January of this year, the first 25 MW amorphous silicon solar thin film battery production line in China began to be commissioned in Shanghai Rudong Economic Development Zone. The total production capacity of the production line reached 500 MW in 3 years, and the on-grid price is expected to decrease from the current 4 yuan/kWh. 1 yuan / degree, to achieve a revolutionary breakthrough in solar cell manufacturing costs.
In the use of new energy, the construction of the Olympic venues has given us a lot of important inspirations. We firmly believe that under the guidance of the basic national policy of environmental protection, as long as we despise the enemy strategically and attach importance to the enemy tactically, we will be able to achieve the national goal of energy saving and emission reduction like the Green Olympics.
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