五、w,w,和 q11定容过程121pdv= 0vdp=v(pl -p2)WWt11q, =u+w=△= c(T -T)["Tds.1定压过程111--=0-1w= p(vW1福?212Tds(TT△h+w = △h =qpCTp11111
五、w, wt 和 q 定容过程 2 1 w p v = = d 0 定压过程 ( ) 2 1 w= p v −v ( ) 2 t 1 2 1 w v p v p p = − = − d ( ) 2 1 2 2 1 1 d T v V T q u w u c T T T s = + = = − = t w = 0 ( ) 2 1 2 t 2 1 1 d T p p T q h w h c T T T s = + = = − =
1定温过程111/2V2pv/RTWir01g1VV12P2vp1-R.T In1Wg1pPi1Au+ w = Ah+ wq==W-WqK1111111一-1111111-111福111IE111I1111111/111111/K
定温过程 2 2 2 g 1 1 1 1 d d ln pv v w p v v R T v v = = = 2 2 2 t g 1 1 1 1 d d ln vp p w v p v R T p p = − = − = − t q u w h w = + = + t = = q w w