Non-adiabatic compression 2 Assumptions: SSSF A) -△KE=△PE=0 PiV"=P2V2 -0-w+学e-a++g dt 0=Qc-Wc+m(h-h2) →wc-qc=h1-h2 p 2c For an internally reversible,steady flow process: P2 2 cooling wc=Jvdp adiabatic Note:Compressor cooling decreases v, therefore also decreases wc! →Try to exchange heat P1 from the compressor V to environment! 上游充通大率 May15,2018 2 SHANGHA BAO TONG LINIERSITYMay 15, 2018 2 Non ‐adiabatic compression   2 2 CV in out in out in out C C 12 CC12 v v 2 2 dE Q W m h gz m h gz dt 0 Q W mh h w q hh                                Assumptions: ‐ SSSF ‐ KE = PE = 0 1 2 . W C . Q C CV v 1 2s p p 2 p 1 2c cooling adiabatic For an internally reversible, steady flow process: 2 C 1 w vdp   Note: Compressor cooling decreases v, therefore also decreases w C! Try to exchange heat from the compressor to environment! n n 11 2 2 p v pv 