1. The problem statement, all variables and given/known data Exhaust gas expands through a nozzle whose isentropic efficiency is 88%. The inlet pressure and temperature are 1.6 bar and 400c respectively. At outlet the pressure has fallen to an ambient level of 1.013 bar. Given that the inlet velocity is negligible, and Cp and [tex]\gamma[/tex]are 1.15kJ/kgK and 1.3 respectively, determine; i)the outlet pressure and velocity ii)the rate of generation of entropy, if the mass flowrate is 2.8 kg/s 2. Relevant equations s2-s1=cp ln (T2/T1)-R ln(P2/P1) 3. The attempt at a solution Outlet Temp T2s/T1=(p2/p1)^([tex]\gamma[/tex]-1/[tex]\gamma[/tex]) Therefore, T2s=673x(1.013/1.6)^(0.23076923) =605.6266K T2-673= - 67.373/0.88= -76.56 Therefore, T2=673+-76.56 = 596.44K This doesn't seem right? Is it just the first part of the formula i use, to get T2s? After this i am stuck. Any help with this will be greatly appreciated!!