Re: [新聞] 日本福島核電廠氫氣爆炸
看板Physics作者Emcc (mass, momentum, energy)時間13年前 (2011/03/13 00:30)推噓9(9推 0噓 9→)留言18則, 10人參與討論串5/14 (看更多)
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不要懷疑
氫氣真的被用來當冷卻劑
而且相當廣泛
不過不是用於冷卻反應爐
而是發電機組
Hydrogen-cooled turbogenerator
http://en.wikipedia.org/wiki/Hydrogen-cooled_turbogenerator
氫氣是熱傳導係數最高的氣體 0.168 W/(m*K)
加上最小的密度
viscosity低
流動時的阻力小
所以被廣泛的拿來用於當做冷卻劑
一般是被密封於發電機內
在轉動的轉子 定子間流動吸熱
再經由熱交換器將熱傳出
發電機功率300MW 以下一般採用空氣冷卻就足夠
像核電廠這種大功率就會採用氫氣
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