首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
Smart Windows Windows not only let light in to cut down on electricity use...
Smart Windows Windows not only let light in to cut down on electricity use...
admin
2020-12-24
36
问题
Smart Windows
Windows not only let light in to cut down on electricity use for lighting, but the light coming through the window also provides heat. However, windows are not something people typically associate with an advanced technology. Researchers are now working on new technologies that enable a window to quickly change from clear to dark and anywhere in between easily.
“ It took us a long time to figure out what a window really is,” says Claes Granqvist. He’s a professor of solid-state physics at Uppsala University in Sweden. “ It’s contact with the outside world. You have to have visual contact with the surrounding world to feel well. ”
So, windows and natural light are important for improving the way people feel when they’re stuck indoors.
Yet, windows are the weak link in a building when it comes to energy and temperature control. In winter, cold air leaks in. When ifs hot and sunny, sunlight streams in. All of this sunlight carries lots of heat and energy. And all of this extra heat forces people to turn on their air conditioners. Producing blasts of cold air, which can feel so refreshing (使人清新的), actually sucks up enormous amounts of electricity in buildings around the world.
Windows have been a major focus of energy research for a long time. Over the years, scientists have come up with a variety of strategies for coating, glazing (用玻璃覆盖), and layering windows to make them more energy efficient. Smart windows go a step further. They use chromogenic (发色的)technologies which involve changes of color.
Eleclrochromic (电致色的)windows use electricity to change color. For example, a sheet of glass coated with thin layers of chemical compound such as tungsten oxide (氧化钨)works a bit like a battery. Tungsten oxide is clear when an electric charge is applied and
dark when the charge is removed, that is, when the amount of voltage (电压) is decreased, the window darkens until it's completely dark after all electricity is taken away. So applying a voltage determines whether the window looks clear or dark.
One important feature that makes a smart window so smart is that it has a sort of “ memory All it takes is a small change of voltage to turn the window from one state to the other. Then,it stays that way. Transitions take anywhere from 10 seconds to a few minutes, depending on the size of the window. The development of smart windows could mean ths[t massive air conditioning systems may no longer be needed. “ In the future, ” Granqvisl: says, “ our buildings may look different. ”
Which paragraph gives an account of the way electrochromic windows change color?
选项
A Paragraph 3.
B Paragraph 4.
C Paragraph 5.
D Paragraph 6.
答案
C
解析
转载请注明原文地址:https://ti.zuoweng.com/ti/Je9QKKKQ
相关试题推荐
共用题干 第二篇Iwasblind,butIwasashamedofitifitwasknown.Irefusedtouse...
共用题干 第二篇Iwasblind,butIwasashamedofitifitwasknown.Irefusedtouse...
共用题干 第二篇Iwasblind,butIwasashamedofitifitwasknown.Irefusedtouse...
SmartWindows Windowsnotonlyletlightintocutdownonelectricityuse...
SmartWindows Windowsnotonlyletlightintocutdownonelectricityuse...
SmartWindows Windowsnotonlyletlightintocutdownonelectricityuse...
SmartWindows Windowsnotonlyletlightintocutdownonelectricityuse...
Severalwindowshadbeensmashed.A.cleanedB.brokenC.replacedD.fixed
SmartWindows Windowsnotonlyletlightintocutdownonelectricityuse...
SmartWindows Windowsnotonlyletlightintocutdownonelectricityuse...
随机试题
小儿呼吸的生理特点,错误的是 A.肺容量较成人大 B.潮气量较成人小 C.
通信线缆安装中,建筑物内电缆配线管的安装要求是( )。 A.管线可以合穿其他非
关于体液电解质测定,错误的是( )。 A、全血不能用于电解质测定 B、血清和
1、A.膜部尿道损伤 B.球部尿道损伤 C.膀胱损伤 D.输尿管损伤 E
(2017年)某石化生产企业为增值税一般纳税人,该企业原油生产成本为1400元/
货币工资的影响因素包括()。
在证券交易市场发展早期,()是场外交易市场的主要形式。 I.柜台市场 Ⅱ.
国家机构是国家为实现其管理社会、维护社会秩序职能而建立起来的国家机关的总和。根据我国宪法规定,我国的最高国家权力机关是A.国务院B.中央军事委员会C.全国人
张某购买了一套住宅,测量结果表明:该住宅套内使用面积为110m2;套内自有墙体的水平投影面积为8m2,共有墙体的水平投影面积为12m2;封闭阳台的水平投影...
期货公司有()情形的,应当立即书面通知全体股东,并向期货公司住所地的中国证监会派出机构报告。A:公司或其董事、监事、高级管理人员因涉嫌重大违法违规被有权机关立案