首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Smart Window Windows not only let light in to cut down an electricity use for lighting, but the light coming through the win
Smart Window Windows not only let light in to cut down an electricity use for lighting, but the light coming through the win
admin
2011-05-18
84
问题
Smart Window
Windows not only let light in to cut down an electricity use for lighting, but the light coming through the window also provides heat. However, windows are not something people typically associate with being a cutting edge technology. Researchers are now working on new technologies that enable a window to quickly change from clear to dark and anywhere in between with a flip of a switch.
"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 the winter, cold air leaks in. When it’s 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, actually suck 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, and layering windows to make them more energy efficient. Smart windows go a step further. They use chromogenic technologies which involve changes of color.
Electrochromic windows use electricity to change color. For example, a sheet of glass coated with thin layers of chemical compound such as tungsten oxide 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 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 jolt 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 that massive air conditioning systems may no longer need. "In the future, " Granqvist says, "our buildings may look different. "
What are smart windows, according to Paragraph 4?
选项
A、Windows that are coated.
B、Windows that are glazed.
C、Windows the color of which can be changed.
D、Windows that have many layers.
答案
C
解析
第四段告诉我们,多年来,科学家已研究出多种通过窗户节能的办法,而Smart windows使用的技术使窗户能变换颜色,所以C是正确选择。
转载请注明原文地址:https://kaotiyun.com/show/mMLd777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
EarBreakthroughNewresearchpublishedinthejournalCurrentBiologyhasaddedsignificantlytounderstandingofhowthee
DeforestationandDesertification(沙漠化)TheSahelzoneliesbetweentheSaharadesertandthefertilesavannahs(热带大草原)ofnort
DeforestationandDesertification(沙漠化)TheSahelzoneliesbetweentheSaharadesertandthefertilesavannahs(热带大草原)ofnort
JapaneseCarKeepsWatchforDrunkDriversAconceptcardevelopedbyJapaneseCompanyNissanhasabreathalyzer-likedetection
TVGoesDigitalComingsoontoyourTV:viewsofthehottestlivebasketballplaysfromanyseatinthestadium.Whatabetterl
ThewriterbelievesthatthepopulationexplosionresultsfromAccordingtothepassage,whichofthefollowingstatementsabou
TheMirSpaceStation1TheRussianMirSpaceStation,whichcamedownin2001atlastafter15yearsofpioneeringtheconcept
ALEDLightingIsNotMatureBLEDLightingWillReplaceTraditionalLightingCAlmostEverythingCouldBetheMainLight
EconomicReforminChinaMoreUSsinologistshaveexpressedconfidenceinChina’seconomicreformandtheprospectsforChina’s
随机试题
_______是润滑油的主要性能指标。
咨询顾问对企业管理问题的诊治时,如何遵循有限参与的基本原则?
效度
下列哪种物质不是前列腺分泌的
社会诊断的重点内容是
暂列金额一般可为分类分项工程项目和措施项目合价的()。
主刑分为()。
消费者风险知觉消减的方法包括()。
某零件加工厂按照工人完成的合格零件和不合格零件支付工资,工人每做出一个合格零件能得到工资10元,每做一个不合格零件将被扣除5元,已知某人一天共做了12个零件,得工资90元,那么他在这一天做了多少个不合格零件?
Jason______upatextilemillneartheupperreaches.
最新回复
(
0
)