作者查詢 / jagger
作者 jagger 在 PTT [ ChemEng ] 看板的留言(推文), 共66則
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3F推:機械材料(工程材料) 機械製造 材料科學58.115.150.57 12/09 23:47
14F→:如果你真的有興趣的話就去念啊 但是以後去找化工廠有可能06/28 00:30
15F→:人家只看你的化工學士學歷 而不是你的生科碩士學歷06/28 00:31
1F→:y=Ku/(Ts+1) 其中u=p/s 再作Laplace反轉換04/17 14:18
23F→:化工是應用單操輸送化反的知識背景去研究生技03/16 21:04
24F→:沒有這些基礎知識背景去唸化工會很吃力03/16 21:06
1F→:相平衡時△G=0 ; 相變態先算出△H、△S,再求出△G=△H-T△S02/17 22:40
2F→:Tb=1000K物質在1200K蒸發不是相平衡過程 所以要另外找路徑02/17 23:02
5F推:三樓正解01/29 04:17
6F→:第一題可參考Laidler物化Ch.4 溫度,壓力對平衡常數之影響01/29 04:30
7F→:結論就是壓力對平衡常數K值影響太小了 所以把它忽略不計01/29 04:33
8F→:第二題...翻了幾本書都只有V H G S的change of mixing01/29 04:38
9F→:不過剛剛找到一個網頁 http://ppt.cc/@0FQ01/29 04:46
10F→:理想溶液U=純物質U 所以混合內能變化為零01/29 04:48
11F→:也可用Hi=Ui+P*Vi證明(Smith化熱11.3 partial properties)01/29 04:59
13F→:網頁第二個式子 U^id = ΣxiUi 就是指理想溶液態U=純態U01/30 02:48
14F→:所以理想溶液混合U變化: △U^id = U^id - ΣxiUi = 001/30 02:51
16F推:理想混合溶液性質差 課本就寫 △M^id = M^id - ΣxiMi01/30 03:43
17F→:而理想溶液具有的性質 V^id = ΣxiVi H^id = ΣxiHi01/30 03:46
9F→:對材料方面有興趣不一定要去修材料系的課01/27 01:22
10F→:材料分很多種...對金屬材料有興趣再去修物理冶金吧01/27 01:23
11F→:如果都很有興趣的話 那建議你去修物理系的固態物理01/27 01:44
1F→:基本上在程控中ODE的變數是定義為微擾變數04/17 20:40
2F→:而且通常初始條件都是穩態 所以IC=004/17 20:42
1F→:因為過冷液體在凝固點以下非平衡狀態 會自發趨向平衡狀態12/02 01:41
2F→:然後此凝固過程為不可逆...故不可逆自發 即entropy大於012/02 01:46
3F→:對了...這裡的entropy是指total entropy12/02 01:50
4F→:你可以去參考Laidler物化課本第三章有個範例是算過冷液凝固12/02 01:54
5F→:按照課本範例 過冷液體凝固的system entropy是小於0沒錯..12/02 01:56
6F→:囧...上面的entropy要改成entropy change @@12/02 02:04
5F→:116化工乙組錄取名額很少耶...怎不考慮116材料所!?11/04 18:13