Solution cont. How to find V2? 14.15kg/s T=200C 1 A2=25cm2 T2=40C P1=7bar P2=7bar rin =40 kg/s V2=m22/A2 25cm2 Control volume boundary Saturated liquid P3=7bar (AV)3=0.06m3/s > State2:T2=40C----> Subcooled/Compressed liquid. P2 7 bar Approximation Tables/Graphs/Software U2≈U(T2) Table A-4:40°C =1.0078×10-3m3/kg (14.15kg/s)(1.0078×10-3m/kg)104cm2 V2= 5.7m/s 25cm2 1m2 上游充通大 March 26,2019 9 SHANGHAI JIAO TONG UNIVERSITYMarch 26, 2019 9 Solution cont. ? State 2: Subcooled/Compressed liquid. Approximation Tables/Graphs/Software Table A-4: 40˚C How to find V2 ? V2 ?