CHANGSHA - A group of Chinese students have invented a system to increase the electricity generation of small and medium-sized hydropower stations during dry seasons. The system is based on a variable speed, constant frequency motor for small and medium-sized hydropower plants designed by a doctoral team from Hunan University. "Traditional hydroelectric power stations have a fixed water flow requirement, which means electricity outputs drop dramatically during the dry season," said Lyu Mingsheng, one of the students. The invention fixes the current situation where power output is directly proportional to river flow, allowing small and medium-sized hydropower plants to maintain output throughout all seasons, according to Lyu. Improving generating capacity is expected to reduce the number of hydropower plants needed in the future, therefore lessening their effect on the environment. "The new technology will transform the dam construction in China, making it more environment-friendly," he said. Lyu cited official figures published in 2013 that stated China had more than 45,000 hydropower stations in rural areas, with the total installed capacity exceeding 65 million kilowatt (kW). If the new system was applied to all of these stations, the total installed capacity would be increased by 19.5 million kW, almost equivalent to the output of the Three Gorges Dam which is 22.4 millon kW, Lyu added. The core technology has received 10 national patents and several companies have signed cooperation agreements with Lyu's team. make your own wristbandcustom silicone bracelets24 hour wristbands couponjordan wristband rubber
Many sectors of Chinese society mourned the death of renowned Hong Kong philanthropist and prominent industrialist Tin Ka-ping, who died at the age of 99 in the city on Tuesday morning.Leading the tributes was the central government's top representative in Hong Kong, Wang Zhiming, director of the Liaison Office of the Central People's Government in the Hong Kong Special Administrative Region. Wang expressed his sorrow over Tin's death on Wednesday.He said he respected and appreciated Tin's lifelong love for the country and his great contribution to education in China.Tin cared about society and promoted public welfare in ways that will benefit future generations, Wang said.Joining him was Hong Kong's Chief Executive Carrie Lam Cheng Yuet-ngor. She said on Tuesday that Tin not only made significant contributions to the industrial development of Hong Kong but was also devoted to philanthropy over the past few decades, both in the special administrative region and on the mainland.Lam said she was grieved to learn of Tin's passing and extended condolences to his family.Hong Kong's Secretary for Education Kevin Yeung Yunhung said the Tin Ka Ping Foundation funded various educational institutions, from kindergartens to universities, as well as several scholarship and exchange programs that benefit a large number of local students.Born in Guangdong province, Tin moved to Hong Kong in 1958. He was successful in his early days in the chemicals business and later made a fortune in real estate. He devoted his life to promoting the development of charities, donating 80 percent of his total assets to different fields, especially education.So far, the foundation, a nonprofit charity founded by Tin in 1982, has funded 318 education institutions, more than 1,800 rural libraries, 29 hospitals and about 130 bridges and roads across 34 provinces, municipalities and autonomous regions in China.Educational institutions that were funded by Tin in both Hong Kong and the mainland also expressed both sorrow and appreciation.The University of Hong Kong said that Tin was a selfless educator and philanthropist who had contributed immensely to the development of teaching, learning and research in Hong Kong and on the mainland.Zhejiang University posted a tribute to Tin on its social media account. Tin provided money to establish the Tin Ka Ping Academy on the Xixi campus of the university. As it is the place where most students go for classes, the building bears witness to students' growth, the university said.Tin's name and the building have been integrated into the university, the post said.Other universities and middle schools in different provinces, including Guangdong, Sichuan, Yunnan, Jiangsu, also mourned Tin. All of them have received donations.
