Question

A thermal power plant operates on a regenerative cycle with a single open feed water heater, as shown in the figure. for the state points shown, the specific enthalpies are: h₁ = 2800 kJ/kg and h₂ = 200 kJ/kg. the bleed to the feed-water heater is 20% of the boiler steam generation rate. The specific enthalpy at state 3 is                                                                                                                                      

      (a) 720 kJ/kg                                                       (b) 2280 kJ/kg

      (c) 1500 kJ/kg                                                     (d) 3000 kJ/kg