Engineering, 21.04.2020 03:16 RealSavage4Life

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1. A turbine in a steam power plant operates isentropically with an inlet pressure (P3) of 3.5 MPa and inlet temperature (73) of 600 C. The water exiting the turbine is at 50 kPa (P4). Model the steam power plant as an ideal Rankine cycle to evaluate the following:

a. What is the phase of water, enthalpy and entropy at state 3 (turbine inlet)?
b. What is the phase of water, enthalpy and entropy at state 4 (turbine exit)?
c. What is the intensive work output of the turbine with the assumptions above?
d. Assuming that the water is brought to the saturated liquid line in an isobaric condenser process, what is the intensive enthalpy and specific volume of the water after condensation (at state 1)?
e. What is the intensive amount of heat transferred in the condenser process?
f. After the condenser, a liquid pump raises the pressure to the boiler pressure (state 2, P2) where the liquid gets heated in an isobaric boiling process ending at state 3. What is the P2? Estimate the intensive work input into the pump. g. What is the intensive enthalpy at state

2. h. What is the intensive amount of heat transferred into the system during boiling (2-3)? i. What is the thermal efficiency of this steam power plant?

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