A thermal power plant operates on a regenerative cycle with a single open feed water heater as shown in figure. From the state points shown, the specific enthalpies are: h1 = 2800 kJ/kg and h2 = 200kJ/kg. The bleed to the feed water is 20% of the boiler steam generation rate. The specific enthalpy at state 3 is
1
720 kJ/kg
2
2280 kJ/kg
3
1500 kJ/kg
4
3000 kJ/kg