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iebpk時間8年前 (2016/03/06 10:39)推噓6(10推 4噓 26→)

留言40則, 22人參與討論串11/21 (看更多)

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. -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 24.87.138.133 ※ 文章網址: https://www.ptt.cc/bbs/Gossiping/M.1457231996.A.3FA.html

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CREA

03/06 10:41, , 1^F

03/06 10:41, 1^F

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obov

03/06 10:41, , 2^F

03/06 10:41, 2^F

陰錯陽差請到obov大了久仰了不好意思我新手

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axiz711

03/06 10:41, , 3^F