The First 100% Green Winter Olympics

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lok
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註冊時間: 2020-12-02, 11:17

The First 100% Green Winter Olympics

文章 lok »

Renewable energy is used to power all competition venues, making the Beijing Winter Olympic Games the first one in history to power all its venues with green electricity. It has been made possible by a flexible DC power grid bringing the capital city electricity generated from the rich wind and solar resources in Zhangjiakou, the co-host city for the Beijing Winter Olympic Games.
The power grid is expected to send 22.5 billion kWh of electricity to Beijing each year in the future, or around one-tenth of the city’s total power consumption. It will help save 7.8 million tonnes of standard coal and reduce carbon dioxide emissions by 2,040 tonnes each year.
As an indicator of the green drive, Beijing last year reported the lowest average concentration of PM2.5 since records began in 2013, with the reading at 38 micrograms per cubic meter in 2020, a year-on-year decline of 9.5 percent.

The Beijing Winter Olympic Games are of special significance to China’s sports and the development of international Olympic Movement. President Xi Jinping set out a vision of engaging 300 million Chinese people in winter sports – a goal that China has already reached. Mr. Thomas Bach, President of the International Olympic Committee called China “a new winter sport country”, saying that “the 300 million people who have now been made familiar with winter sport will in the end be the great legacy of the Olympic Winter Games”.

Beijing presents a green winter Olympic Games in the Guardian 2022 February 18 By Chu Maoming
18 February 2022
https://guardian.ng/opinion/beijing-pre ... pic-games/

Tseung
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Re: The First 100% Green Winter Olympics

文章 Tseung »

China is trying his best to show technology and change the bad effects of climate change. Good work.

Mabel Tsui
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註冊時間: 2021-08-04, 20:57

Re: The First 100% Green Winter Olympics

文章 Mabel Tsui »

Recyling water resources, storing snow for snowmaking help achieve efficient utilization of snow during Beijing 2022
Source: People's Daily Online Updated: 2022-02-10

"I'm a ski track designer, not an expert on snowmaking, but I want to say that the conditions of snow along the alpine ski tracks here are perfect," said Bernhard Russi, chairman of the International Ski Federation's Alpine Committee.

"When I first visited Yanqing in 2014, I saw literally nothing here, but now, when I look down from the mountain, I see snow everywhere and the view is beautiful," Russi, who has designed tracks for alpine ski competitions for nine consecutive Winter Olympics, told a press conference held on Feb. 5 in Beijing.

Because different snow-related competitions have varied requirements for the quality of snow, artificial snow becomes crucial for building high-quality ski tracks. As a matter of fact, artificial snowmaking technology was adopted several decades ago and multiple Olympic Winter Games have produced enormous quantities of artificial snow when preparing snow for the events. The Beijing Winter Olympic Games is no different.

"The difference is that we pay more attention to the concept of recycling in snowmaking," said Wei Qinghua, Chinese director of the snowmaking team for Beijing 2022. Wei is also a venue operation manager at the Guyangshu venue cluster located in Beijing 2022's Zhangjiakou competition zone in north China's Hebei Province.

Wei explained that producing artificial snow is a process of turning water into snow, and in order to prepare water for this purpose, they would first store melted snow water collected from the ski resort into storing facilities and then filter the water so that it could be used again for snowmaking. Because no additives have been used throughout the snowmaking process, the melted snow water can later serve as a source for landscape greening and irrigation.

Wei explained that a more direct way to build ski tracks by using as little water as possible is to collect the snow before the winter season ends, store it during the summer season, and then directly reuse it upon the arrival of the winter season the next year.

Russi said that it has been a common practice of storing snow for building ski tracks in Europe.

Thanks to a project dedicated to the research and application of technologies for preparing snow for competition purposes under the country's efforts to offer technological support for Beijing 2022, Chinese scientific research teams have already developed relevant technology regarding snow storing and design and manufacturing of snow storing facilities.

During a test activity on snow storing held in 2017, a scientific research team under the Chinese Academy of Sciences helped a ski resort in Yanqing district of Beijing in storing about 60 percent of the snow collected from the previous winter season.

http://en.qstheory.cn/2022-02/10/c_705956.htm

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