H1= 3756.1 S1 = 6.9665 H2= 3143.8 H3 = 3690.1 H4 = 2441.8 H5 = 191.85…

H1= 3756.1
S1 = 6.9665
H2= 3143.8
H3 = 3690.1
H4 = 2441.8
H5 = 191.85
H6 = 193.8
stuck on H7
I (30 pts.) A steam power plant with a two-stage turbine and a closed feedwater heater is used to generate power at a local power plant. A portion of the steam at the exit of the first stage of the turbine is used raise the temperature of the water before entering the boiler. The remainder is reheated and sent to the second stage of the turbine. Assume that the pump is isentropic and that the water entering the pump and steam trap is saturated liquid. Given the following, determine the unknowns below. m = 50kg/s T1=659°C, P1=12MPA P2=2.0MPA T3=600°C T1 T2 SG P4=0.1bar T7=210°C [4 kJ/kg kJ/kg kJ/kg kJ/kg kJ/kg kJ/kg kJ/kg kJ/kg kJ/kg hi= h2= h3= h4= hs= h6- h7= hg= h9= CND FWH 6. 7. P5 9. FWH: y’ =