[討論] 熱力學問題
以我的認知
h = u+ pv
其中h表示焓，u表示内能。
pv為開放系統所做的流功
1.此題等壓,代表系統流功pv=0 故win=0
並不是答案上寫的wout
(在此書中通常作者把這個wout指的是整個系統的對外輸出功
像是渦輪機的輸出功率,他是跟流功區分開來的)
但作者卻讓wout=0
2.這個疑問點比較大
當pv=0,h=u,這樣還能稱作焓嗎?系統的變化僅是純粹的內能改變量
後半段作者查表利用h2 h1來求解qin,不知是否正確
故不能使用h來計算qin必須使用內能u的改變量計算
不知我的想法是否有錯
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