Derivation of exergy balance equation for CV sys. 1st law,energy balance: -0，w号 dt out 2nd law,entropy balance: -是+∑是+∑msm+ dt T。 out Solve entropy balance equation for Q,and then substitute in energy balance equation: -工o[aIs+2n- dt out +0-8mh++-2m+ +g2 out 2 out 上游通大学 April 30,2019 3 SHANGHAI JIAO TONG UNIVERSITYApril 30, 2019 3 Derivation of exergy balance equation for CV sys. 1 st law, energy balance: 2 nd law, entropy balance: Solve entropy balance equation for Qo and then substitute in energy balance equation: 2 2 CV o j in out j in out in out dE v v Q Q W m h gz m h gz dt 2 2                         CV o j in in out out tot o j j in out dS Q Q m s m s dt T T          CV CV o o j in o in out o out o tot j in out j 2 2 j in out j in out in out dE dS T T Q m T s m T s T dt dt T v v Q W m h gz m h gz 2 2                                        