Continue Example 38.1 Continue Solution: ·Irreversibilities Wuse=Wact-poAVcv i=Wrev.use -Wise =Wrev,use -W act =wmer-w1=677.98k-5143J-163.68 kJ kJ kg kg Or,calculate irreversibilities using 2nd law,entropy balance 答-Σ以+nm+→=6，) in out Lg-I6swK4os-6212四-16s6 上游气通大粤 May2,2018 11 SHANGHAI JIAO TONG UNIVERSITYMay 2, 2018 11 Continue Example 38.1 Continue Solution: • Irreversibilities • Or, calculate irreversibilities using 2nd law, entropy balance T rev,use use rev,use act rev,use,T T i w w w w kJ kJ kJ w w 677.98 514.3 163.68 kg kg kg          w w p V use act o CV    ? CV dS dt  Qi       in in out out cv 2 1 i in out CV o o 2 1 m s m s m s s kJ kJ i T T s s 300K 7.4668 6.9212 163.68 m kg K kg                   