Calculate the mass flow rate of steam circulated and the rate of heat generation

Question

In a BWR type nuclear reactor, the heat of nuclear fission is transferred to water. In a reactor, water comes out of the reactor as saturated vapour at 72 bar. The steam flows through a turbine and exhausts at 0.08 bar to a condenser. The water leaves the condenser at 0.08 bar and 40^oC(h = 176.5kJ/kg) . The liquid water is again pumped through a pump to the nuclear reactor. Isentropic efficiency of the turbine is 70% . The plant has a capacity of 750MW. Calculate the mass flow rate of steam circulated and the rate of heat generation.

         Properties of steam:

         P = 0.08bar : h_f = 173.9kJ/kg,

         h_fg = 2403.2 kJ/kg

         s_f = 0.5926kJ/kg-K,

         s_fg  = 7.6370kJ/kg-K

         At 72 bar : h_g = 2770.9 kJ/kg

         s_g = 5.8019 kJ/kg.K