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科学60秒:充电器究竟一年能产多少热?

时间: 2020年07月06日 | 作者: Admin | 来源: 领研网(linkresearcher.com)



 [听力全文]


How many chargers do you own? One for your cell phone? Another for your laptop? Yet another for your tablet, podcast player or even electric toothbrush? It adds up.


If you've ever felt a charger when it's doing its job you know how warm they get. That's because they're inefficient: wasting electricity as heat as well as feeding the battery. But new standards recently adopted in California aim to change all that.


Earlier this month, the California Energy Commission voted to adopt minimum energy efficiency standards for these ubiquitous devices. The Golden State alone boasts 170 million such chargers (pdf)—not including the team in San Diego—or more than four for each resident of the state.


The new energy efficient chargers will save Californians an estimated $306 million a year in electricity costs, as well as enough electricity to power 350,000 homes for a year.


Of course, replacing the plethora of different chargers with one universal charger for a  particular type of gadget might be even better—and cut down on e-waste. But until that day, stronger charger standards give a nice jolt to energy efficiency efforts.


—David Biello



 [重难点词汇、短语]


ubiquitous: adj. 普遍存在的,无所不在的

plethora: n. 过多;过剩

gadget: n. 小玩意;小配件

jolt: n. 震撼 



 [参考译文]


你有多少充电器?手机充电器一只?笔记本充电器一只?还有你的平板、音乐播放器、电子牙刷?加起来数量也不小了。


如果你曾摸过充电中的充电器,你就知道它能有多热。这是因为充电器效率太低:给电池充电的时候以热能的形式浪费了电能。但美国加利福尼亚州采取了一项政策,旨在改变这一切。 


早些时候,加利福尼亚能源委员会(California Energy Commission)投票通过了最低能效标准,用于应对这些无处不在的充电器。仅加州(还不包括圣地亚戈)就存在1.7亿只充电器,或者说,州内居民平均每人拥有超过4个充电器。


新的节能充电器预估每年将为加州节省3.06亿美元的电力成本,足以满足35万户家庭的一年用电。


当然,相比使用过多的充电器,用一个通用的充电器给一类特定小型用电设备充电,也许是更好的做法,同时还能减少电子垃圾。但在能做到这一点之前,更严格的充电器标准还是能为节能做出极大的贡献。 


翻译 阿金