Chapter 5 - Mass and Energy Analysis of Control Volumes - Problems - Page 261: 5-111

$T_l=389.5°C$ $w_{flow}=288\ kJ/kg$

For discharges $h_{line}=u_{tank}$ From table A-6: Tank ($P_t=4\ MPa, T_t=550°C$): $u_t=3189.5\ kJ/kg$ Line ($P_l=4\ MPa, h_l=u_t$): $T_l=389.5°C,\ u_l=2901.5\ kJ/kg$ $w_{flow}=h_l-u_l$ $w_{flow}=288\ kJ/kg$