Solution Cont. Determine the work: Piston is the only work mechanism constant w-frav-Frivtpow W =p(2-v1) m State 1:superheated PI=10 bar Table A-6 v1 =0.3066 m3/kg (10bar0.1944-0.3066) m10 N/m2 1 kJ kg I bar 10'N-m T1=400C w1=2957.3kJ/kg =-112.2kJ/kg State 2:sat.vapor D2=p:=10bar TableAS v2=0.1944m3/kg 400C 10 bar 179.9C 4.758bar 150°C 上游充通大学 March 16,2018 8 SHANGHAI JIAO TONG UNIVERSITYMarch 16, 2018 8 Solution Cont. Determine the work: Piston is the only work mechanism constant Table A-6 State 1: superheated State 2: sat. vapor p2 =p1=10bar Table A-5