'Smart' window switches to dark mode to
save energy
Source: 27 September 2011 Last updated at14:18
GMT
"Smart" windows could help save
energy costs
智能型窗(玻璃)戶可幫助節省能源成本
A new type of "smart" window that switches from summer to winter mode has been made by South Korean scientists.
南韓科學家已經製造了一個新型的“智能”窗玻，能切換夏季 / 冬季模式。
The window darkens when the outside air
temperatures soar, and becomes transparent when it gets cold in order to
capture free heat from the sun.
在外界氣溫飆升時智能窗戶可以使窗玻變暗以阻絕陽光，而當溫度變得寒冷時則會變得透明，以捕捉太陽的熱能。
Similar windows already exist, but the
researchers say their method allows for an almost instantaneous switch from
opaque to transparent.
此種類似的窗戶已經存在，但研究人員說，他們的方法可使其從不透明到透明幾乎是瞬間轉換。
This may help save more energy, the team
writes in the journal ACS Nano.
"This type of light control system may
provide a new option for saving on heating, cooling and lighting costs through
managing the light transmitted into the interior of a house," said the
scientists.
這樣做可能有助於節省更多的能源，這個團隊在ACS奈米期刊雜誌發表說明。
”科學家“說：這類型的燈光控制系統提供一個新的選擇以節省加熱，冷卻和照明成本，藉由光源傳輸管理進入房子內部。
"Smart windows can prevent the inside
of a building from becoming overheated by reflecting away a large fraction of
the incident sunlight in summer.
"Alternatively, they can help keep a
room warm by absorbing the sun's heat in winter."
“智能窗”可以在夏季藉由反射大片的陽光介面以防止建築物裡過熱。
“此外，他們可以在冬季吸收太陽的熱量以幫助保持房間溫暖。”
New approach
The existing technology uses charged particles called ions sandwiched between
panes of glass.
Electric current is then applied to switch
the window from opaque to clear and back.
新方法
現有的技術使用一種稱為在玻璃之間夾著離子的帶電粒子。
然後將其應用於開關電流將窗口從不透明轉為清晰， 反覆作用。
“Start Quote
[If] you're allowing light in much quicker,
this can reduce the amount of heat loss out of houses or increase the cooling
in summer”
如果你能讓光線更快些，這可以減少房子熱損失量或在夏季增加降溫速度“
Dr Steven Morris Technology Strategy Board
史蒂芬莫里斯 博士技術戰略委員會
But Ho Sun Lim from Korea Electronics
Technology Institute, Jeong Ho Cho and Jooyong Kim from Soongsil University
但來自韓國的電子技術研究所Ho
Sun Lim，崇實大學的Jeong Ho
Cho和Jooyong Kim的決定使用不同的方法。
They used a special polymer, a different
sort of charged particles known as counterions and solvents such as methanol.
他們用特殊的聚合物，一種不同種類的帶電荷子已知是抗衡離子，有溶解力的甲醇的帶電粒子。
The report states that the result was a
glass that was a lot cheaper to manufacture and much less toxic than those
currently available on the market.
報告指出，結果是製成一種成本更便宜，毒性更低的玻璃在市場更容易流通。
The window is able to switch from 100%
opaque to almost completely clear in a matter of seconds, said the authors.
作者說:此窗戶是能夠在幾秒鐘內從 100％不透明切換幾乎完全清楚。
'Instantaneous' switch
“瞬間”開關
Although "dimming" windows
already exist, it is often necessary to switch them from winter to summer mode
and back manually, using additional equipment such as home-automation panels.
雖然“調光式”窗戶已經存在，它往往是必要用手動方式來回轉換冬季至夏季模式，使用額外的設備，如家庭自動化面板。
"Until now, the numerous technologies
developed not only have been chemically unstable,
prohibiting their use in long-term
switching applications but have been accompanied by the use of expensive
special equipment and complicated harsh processing conditions," stated the
report.
該報告指出:“到現在為止，眾多的技術開發不只有化學性質不穩定，禁止他們使用在長期的開關應用，但一直伴隨著使用昂貴的特殊設備和複雜惡劣的加工條件。
Dr Stephen Morris from Materials Knowledge
Transfer Network that is funded by the UK's Technology Strategy Board said that
if the new method allows the window to switch from opaque to transparent and
back pretty much instantaneously, then it is going to be a real benefit in
terms of energy savings.
斯蒂芬莫里斯 博士從英國技術戰略委員會資助的材料知識傳輸網絡，說明如果新方法允許窗戶在瞬間以不透明/透明來回轉換，那麼它將會真正受益於節約能源。
"That would mean that you're allowing
light in much quicker - and this can reduce the amount of heat loss out of
houses or increase the cooling in summer," he said.
“這將意味著你允許光線更快速 - 這可以減少房子熱損失量或使夏季加速涼爽，”他說。
Related Stories
New 'Smart Window' System With Unprecedented
Performance
ScienceDaily (Sep. 21, 2011) — A new
"smart" window system has the unprecedented ability to inexpensively
change from summer to winter modes, darkening to save air conditioning costs on
scorching days and returning to crystal clarity in the winter to capture free
heat from the sun, scientists are reporting.
新式“智能窗”系統前所未有的性能
每日科學（2011年9月21日 ） -一種新的“智能”窗口系統具有前所未有的能力，以較低的成本變換夏季/冬季模式，在炎熱的天氣變暗，以節省空調費用，在冬季返回晶瑩澄澈，以捕捉到來自太陽免費的熱量，科學家報告。
Their study appears in the journal ACS Nano.
Ho Sun Lim, Jeong Ho Cho, Jooyong Kim and Chang Hwan Lee
point out that the drive for energy conservation has fostered efforts to
develop new types of window glass for everything from skylights and windows in
houses to conference room walls in offices. "Smart" windows that
reflect sunlight away from buildings in summer and switch back to full
transparency in winter already are available. But they have many drawbacks,
including high cost, rapid deterioration in performance, and manufacturing
processes that involve potentially toxic substances. So, the researchers set
out to develop a smart window that overcomes these drawbacks.
他們的研究出現在ACS納米 “ 雜誌 。
Ho Sun Lim, Jeong Ho Cho, Jooyong Kim 和Chang
Hwan Lee指出，促進節能驅動器致力開發各式新類型的窗戶玻璃，從天窗，房子的窗戶，到辦公室的會議室牆壁。“智能”窗戶在夏季可反射太陽光使其遠離建築物和在冬天切換回充分的透明度已供使用。但是他們有很多缺點，包括成本高，性能迅速惡化，製造過程中並涉及潛在的有毒物質。因此，研究人員著手開發一個智能窗，克服了這些缺點。
They discovered that using a polymer, so-called
"counterions" and a solvent such as methanol was an inexpensive and
less harsh way to make a stable, robust smart window. It has the added
advantage of being extremely tunable -- quickly and easily switching from 100%
opaque to almost completely clear in seconds.
他們發現，使用一種聚合物，稱所謂的“抗衡離子”和溶劑如甲醇是一種廉價和較少刺激的方法，促使一個穩定，強大的智能窗。它具有極為可調的優勢 - 快速，方便地從 100％不透明切換到幾乎完全清晰只要數秒。
"To our knowledge, such extreme optical switching
behavior is unprecedented among established smart windows," the authors
state. "This type of light control system may provide a new option for
saving on heating, cooling and lighting costs through managing the light
transmitted into the interior of a house.
“據我們所知，建造智能窗所有的這種極端的光學開關行為是前所未有的，”作者表述說明。“這種類型的燈光控制系統，通過管理進入房子內部傳輸的光可提供一個新的選項以節省熱能，冷卻和照明成本。”
參考資料 :
20111209 Aircafe Break
參考資料 :
20111209 Aircafe Break
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