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[All-In-1-Min] 【整理】2009-05-08 VOA Video News

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ON 王元之
Built in 1930 during the great depression, the 102-story empire state building is a giant  architectural structure made of concrete.Inside are offices, restaurants and plenty of tourists who come for the breath-taking views of the manhaton skyline. Empire States prominence is what prompted owners to embark on a massive 4 year project to reduce its carbon footprint and energy consumption. No manned marble undergoes serious of renovations incluing replacing all of these skyscraper 65,000 windows with insulated glass that will reduce heat in the summer and tropic in the winter. Actual insulation were also been installed behind the radiators to save heat. Other plans including installing energy efficient lighting, upgrading the building control systems to make them more energy efficient and adding modern air conditioning in heating systems whose output adjusts with usage.
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