國際英語新聞-中國建立世界上最大的空氣凈化器

1、資料來源：來自本人網(wǎng)絡(luò)整理！祝您工作順利！國際英語新聞:中國建立世界上最大的空氣凈化器 編者按：英語新聞會播報一些國際性的新聞，作為中同學(xué)的同學(xué)也需要關(guān)注時事熱點(diǎn)，便利考試中寫作的素材積累，我們來看一那么國際新聞。 a 100-metre high air purification tower in xian in shaanxi province has helped reduce smog levels in the city. an experimental tower over 100 metres high in xian, shaanxi province has brought

2、a noticeable improvement in air quality, according to the scientists leading the project, as authorities seek ways to tackle the nations chronic smog problem. image: arch daily the head of the research, cao junji, said improvements in air quality had been observed over an area of 10 square kilometre

3、s in the city over the past few months and the tower has managed to produce more than 10 million cubic metres of clean air a day since its launch. cao added that on severely polluted days the tower was able to reduce smog close to moderate levels. image: ap the system works through greenhouses cover

4、ing about half the size of a soccer field around the base of the tower. polluted air is sucked into the glasshouses and heated up by solar energy. the hot air then rises through the tower and passes through multiple layers of cleaning filters. the tower has no peer in terms of size the results are q

5、uite encouraging, said cao. image: cnbc xian can experience heavy pollution in winter, with much of the citys heating relying on coal. the towers operators say, however, that the system still works in the cold months as coatings on the greenhouses enable the glass to absorb solar radiation at a much

6、 higher efficiency. caos team set up more than a dozen pollution monitoring stations in the area to test the towers impact. the average reduction in pm2.5 the fine particles in smog deemed most harmful to health fell 15 per cent during heavy pollution. image: scmp cao said the results were prelimina

7、ry because the experiment is still ongoing. the team plans to release more detailed data in march with a full scientific assessment of the facilitys overall performance. the xian smog tower project was launched in 2021 and construction was completed last year. the purpose of the project was to find

8、an effective, low cost method to artificially remove pollutants from the atmosphere. cao said their tower in xian required little power to run. it barely requires any power input throughout daylight hours. the idea has worked very well in the test run, he said. several people in xian told the south

9、china morning postthey had noticed the difference since the tower started operating. a manager at a restaurant about 1 kilometer from the tower said she noticed an improvement in air quality this winter. i do feel better, she said. a student studying environmental science at shaanxi normal universit

10、y, a few hundred metres from the tower, also noted noticable improvement in air quality. i cant help looking at the tower each time i pass. its very tall, very eye-catching, but its also very quiet. i cant hear any wind going in or out, she said. the air quality did improve. i have no doubt about th

11、at. the experimental facility in xian is a scaled-down version of a much bigger smog tower that cao and his colleagues hope to build in other cities in china in the future. a full-sized tower would reach 500 metres high with a diameter of 200 metres, according to a patent application they filed in 2021. the size of the greenhouses could cover