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工程热力最全汇总重点复习资料含各种期末试卷及答?- 百度文库

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˵ݽԤݿܲȫҪĵҪݣwordʹáword΢ź:xxxxxxxQQxxxxxx ܸṩĵл֧½⡣

T??Q?Q1Q22?0.5?????0.00067?0T1T22000300 Dzѭ

һѭʿѭijѹp1= 3 MPaʼ¶t1=490棬ѹ

Ч?t עˮ״̬12

p1= 3 MPa t1=490h1=3434kJ/kg;s1=7.2054 kJ/kg.s

p2ts36.18h151.5h2567.1s0.5209s8.3305

'\s1s2s2?(1?x2)?s?x2?sԵóx20.86

'\h2?(1?x2)?h?x2?hóh2?(1?0.86)?151.5?0.86?2567.1?h2?2228.916

'?hɹʽ?t?3h1?h23434?2228.916??0.3671 h1?h33434?151.51 δˮ͹ˮ ?:m3/kgh:kJ/kgs:kJ/kgk

2 ˮͱˮע1bar=0.1MPa

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