A power plant driven by a nuclear reactor is described in the schematic below. The working...
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A power plant driven by a nuclear reactor is described in the schematic below. The working fluid is - water. At the exit of the reactor, the water passes through an expansion valve (which reduces isenthalpic pressure), into a tank where the saturated vapors are separated towards the turbine and the saturated liquid towards the mixing chamber (assume the separation tank is adiabatic). The saturated steam Enters the turbine and drives it. The water that exits the turbine through a condenser comes out in a saturated liquid state. This liquid passes through Pump 1 and then mixes with the saturated liquid which came from the separation tank. The liquid that includes both the mixed streams passes through pump 2 and enters the reactor. Data: at the entrance to pump 2 (state 1) - x1 = 0, P₁ = 2.5 MPa At the entrance to the reactor (state 2) - P₂ = 15 MPa At the entrance to the expansion valve (state 3)-T3 = 260 °C Note: Pay attention to the state of aggregation here - is there a phase change in the reactor At the entrance to the condenser (state 6) - P₁= 20 kPa The turbine and pumps are isentropic, there are no pressure losses in the reactor, the separation tank, the condenser and the mixing chamber. surroundings data: T = 25 °C,P= 100 kPa. Note: The properties of the dead state are according to saturated liquid at the same temperature. What is the specific exergy of the water leaving the reactor? [KJ/KG] What is the mechanical exergy (in the form of work) leaving the turbine, per unit mass of water leaving the reactor? [KJ/KG] What is the exergy destruction in the expansion valve and the separation tank (together), per unit mass of water leaving the reactor? [KJ/KG] What is the exergy destruction in the mixing chamber, per unit mass of water leaving the mixing chamber?[KJ/KG] What was the exergy destruction in pump 2, per unit mass of water coming out of the mixing chamber? [KJ/KG] 2 3 Reactor pump 2 1 4 Separation tank expansion valve saturated liquid 9 mixing chamber 5 saturated steam turbine condenser 8 Pump 1 6 7 A power plant driven by a nuclear reactor is described in the schematic below. The working fluid is - water. At the exit of the reactor, the water passes through an expansion valve (which reduces isenthalpic pressure), into a tank where the saturated vapors are separated towards the turbine and the saturated liquid towards the mixing chamber (assume the separation tank is adiabatic). The saturated steam Enters the turbine and drives it. The water that exits the turbine through a condenser comes out in a saturated liquid state. This liquid passes through Pump 1 and then mixes with the saturated liquid which came from the separation tank. The liquid that includes both the mixed streams passes through pump 2 and enters the reactor. Data: at the entrance to pump 2 (state 1) - x1 = 0, P₁ = 2.5 MPa At the entrance to the reactor (state 2) - P₂ = 15 MPa At the entrance to the expansion valve (state 3)-T3 = 260 °C Note: Pay attention to the state of aggregation here - is there a phase change in the reactor At the entrance to the condenser (state 6) - P₁= 20 kPa The turbine and pumps are isentropic, there are no pressure losses in the reactor, the separation tank, the condenser and the mixing chamber. surroundings data: T = 25 °C,P= 100 kPa. Note: The properties of the dead state are according to saturated liquid at the same temperature. What is the specific exergy of the water leaving the reactor? [KJ/KG] What is the mechanical exergy (in the form of work) leaving the turbine, per unit mass of water leaving the reactor? [KJ/KG] What is the exergy destruction in the expansion valve and the separation tank (together), per unit mass of water leaving the reactor? [KJ/KG] What is the exergy destruction in the mixing chamber, per unit mass of water leaving the mixing chamber?[KJ/KG] What was the exergy destruction in pump 2, per unit mass of water coming out of the mixing chamber? [KJ/KG] 2 3 Reactor pump 2 1 4 Separation tank expansion valve saturated liquid 9 mixing chamber 5 saturated steam turbine condenser 8 Pump 1 6 7
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Given State 1 entrance to pump 2 P1 25 MPa State 2 entrance to reactor P2 15 MPa State 3 entrance ... View the full answer
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