Re: [新聞] 蔡英文:氫能是非核家園戰略選項之一消失

看板Gossiping作者時間10年前 (2016/03/06 12:20), 編輯推噓0(110)
留言2則, 2人參與, 最新討論串16/21 (看更多)
※ 引述《iebpk (夢十夜)》之銘言: : 氫能到底好不好,來聽聽鋼鐵人馬斯克怎麼說啦 : https://youtu.be/YNV8qi_rJBg
: 結論:很笨 extremely silly : It's just very difficult to make hydrogen, : store it and use it on a car. Hydrogen is : an energy storage mechanism. It's not a : source of energy. So, you have to get the : hydrogen from somewhere. : 實在很難做出氫,儲存它,再用在車上. 氫是個儲存 : 能源的方式,不是一種能源. 所以你必須從其他地方 : 取得氫. : If you get the hydrogen from water, so you're : splitting H20. The electrolysis is extremely : inefficient as an energy process. If you took : a solar panel and use the energy from the solar : panel to just charge a battery pack directly, : compared to trying to split water, take the : hydrogen, dump the oxygen, compress the : hydrogen to an extremely high pressure or : liquify it, and then put it in a car and run : the fuel cell, it is about half the efficiency. : It's terrible. What would you do that? : It makes no sense. : 如果你把水拿來分解H20. 電解水是效率非常低的過程. : 如果你把太陽能板給充電池拿來比, 跟把水分解,拿氫, : 丟掉氧,要極高壓壓縮氫或是讓它液態化,再把它放到車 : 上跑. 這效率差了一半. 太慘了. 為什麼要那樣做? : 完全不合理. : And then hydrogen has very low density. It's : a pernicious molecule that likes to get all : over the place. You get metal and .... from : hydrogen. If you get hydrogen leak, it's an : invisible gas. You can't even tell that it's : leaking. And it's extremely flammable. When : it does, it has an invisible flame. : 而且氫的密度很低. 是很危險的分子會到處竄....如果 : 氫漏出來,是隱形的,你也看不出來在漏. 又易燃,燃燒 : 的火也是隱形的. : If you're gonna pick an energy storage mechanism. : Hydrogen is an incredibly dumb one to pick. You : should just pick methane. That's much much easier. : Or propane. : 如果你要選儲存能量的方法,氫是非常愚蠢的選擇.不如選 : 甲烷,簡單多了. 或是丙烷. : The best case hydrogen fuel cell doesn't win : against the current case of batteries, so then : obviously it doesn't make sense. That will : become apparent in the next few years. There is : no reason for us to have this debate. I've said : my piece on this. It will be super obvious as : time goes by. I don't know what more to say. : 最理想的氫能燃料電池贏不過現有的電池,所以這很明顯不 : 合理. 再過幾年會更明白, 我們不需要在這裡辯論. 我要 : 說的就是這樣. 過些時間事情會變得清楚. 我不曉得還有 : 什麼能說的了. 喔,半年後到囉。氫能車上市囉~~ 1.積分沒得賣 2.車比人家貴 3.續航比人短 4.充電比人長 不能滿足單次續航500KM,單次充電氣小於15分鐘。(2025年) 特斯拉的前景跟發言也不難預測拉。 http://finance.sina.com/bg/tech/sinacn/20160124/16321403817.html 猶記得數年前,連電動車都很稀奇的時代,某高層去某廠廠內測試場地。 早就有一氫能車隊跑了十幾萬公里測試。 與其討論氫能源的危險性,不如討論其安全防護設計。 這跟當初電動車上市時有人說會被電死/電池會爆炸。 不是一樣的見識? -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 42.72.19.43 ※ 文章網址: https://www.ptt.cc/bbs/Gossiping/M.1457238056.A.652.html

03/06 13:02, , 1F
如果你說的2025特斯拉可以達到 那前景真的一片大好
03/06 13:02, 1F

03/06 18:01, , 2F
人家特斯拉都達到了
03/06 18:01, 2F
文章代碼(AID): #1Msx0ePI (Gossiping)
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