推 ntust661:最討厭英制了= = 01/14 10:13
推 osunriceo:自從我暑假開始拼化工到現在,這是我第一次看到有人問化 01/14 21:06
→ osunriceo:工的題目 01/14 21:06
→ u487000:= =嗚嗚~答案算出來不對咩 01/14 22:49
AiR is to be compreesd reversibly from an initial condition
of 1 atm and 60(*f) to a final state of 5 atm and 60(*f)
by three different processes:
(a)heating at contant volume followed by cooling at constant
pressure.
(b)isothermal compression
(c)adiabatic compression followed by cooling at constant volume
Air may be considered as ideal gas with Cv=5 and Cp=7(btu)/(lb moa)(*f)
,the initial volume=379ft^3 .the final volume=75.8ft^3
計算(1)the work required
(2)the heat transferred
(3)the change in the internal energy of the gas
(4)the change in the enthalpy of the gas
fr the three processes
*是度F
題目可能很簡單...
但是小弟我看不太懂= =!!它是怎麼算的
還有一題證明
(1)k is the joule-thomson coefficient
這個我沒學過...
又要麻煩各位高手了...
很抱歉...
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※ 編輯: u487000 來自: 140.125.207.105 (01/14 10:11)