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1 Simple Rankine cycle You are asked to...
Problem 2. (11 points) The ideal simple Rankine operates at a pressure of 100 kPa in...
Problem 2. (11 points) The ideal simple Rankine operates at a pressure of 100 kPa in the condenser and at a pressure of 4.5 MPa in the evaporator. The liquid leaving the condenser is a saturated mixture with quality x-0.8. The mass flow rate of steam in the cycle is 1.5 kg/s. Plot the cycle on power-generation cycle using steam (a) T-s diagram for steam; and determine (b) What is the maximum temperature (°C) of this Rankine cycle (c) the...
Question 3 [30 marks] A reheat Rankine cycle is designed for a steam power plant. Steam...
Question 3 [30 marks] A reheat Rankine cycle is designed for a steam power plant. Steam enters both the high- and low- pressure turbines at 600oC. The maximum and minimum pressures of the cycle are 20 MPa and 20 kPa, respectively. Steam leaves the condenser as a saturated liquid. The moisture content of the steam at the exit of the low-pressure turbine is 4% if the actual expansion process is adiabatic; 8.5% if the ideal expansion process is isentropic. The...
A nuclear power plant based on the Rankine cycle operates with a boiling-water reactor to develop...
A nuclear power plant based on the Rankine cycle operates with a boiling-water reactor to develop net cycle power of 3 MW. Steam exits the reactor core at 100 bar, 52O degree C and expands through the turbine to the condenser pressure of 1 bar. Saturated liquid exits the condenser and is pumped to the reactor pressure of l00 bar. Isentropic efficiencies of the turbine and pump are 81% and 78%, respectively. Cooling water enters the condenser at 15 degree...
Consider a steam power plant which operates on the simple ideal Rankine cycle (shown in the...
Consider a steam power plant which operates on the simple ideal
Rankine cycle (shown in the next page), where the boiler pressure
is 3 MPa and the condenser saturation temperature is 50°C. The
temperature at the exit of the boiler is 500°C. Water leaves the
condenser as a saturated liquid. The mass flow rate through each
component is 15 kg/s. Calculate:
1. The power output of the steam power plant
2. The thermal efficiency of the steam power plant
Now,...
Consider a 210-MW steam power plant that operates on a simple ideal Rankine cycle. Steam enters...
Consider a 210-MW steam power plant that operates on a simple ideal Rankine cycle. Steam enters the turbine at 10 MPa and 500°C and is cooled in the condenser at a pressure of 10 kPa. Assume an isentropic efficiency of 85 percent for both the turbine and the pump. (a) the quality of the steam at the turbine exit (b) the thermal efficiency of the cycle (c) the mass flow rate of the steam.
HW-33 (25 points) Superheated steam at an absolute pressure of 20 MPa and a temperature of...
HW-33 (25 points) Superheated steam at an absolute pressure of 20 MPa and a temperature of 560°C flows into the turbine of a Rankine cycle. The absolute pressure at the turbines outlet is 0.5 bar, and liquid exits the condenser at an absolute pressure of 0.4 bar and a temperature 75°C. The absolute pressure is increased to 20.1 MPa across the pump. The turbine and pump have isentropic efficiencies of 81% and 85%, respectively. Cooling water enters the condenser at...
(1) Q.5 (a) A power station using a Superheated Rankine cycle operates with a boiler pressure...
(1) Q.5 (a) A power station using a Superheated Rankine cycle operates with a boiler pressure of 160 bar and a condenser pressure of 0.045 bar. The turbine has an inlet steam temperature of 575°C, and has an isentropic efficiency of 90.5%. The pump has an isentropic efficiency of 88%. Hence, determine Show the cycle on a T-s diagram in relation to the saturation curves and clearly label all the principal points starting from the exit of the condenser. Sketch...
1. A combined gas-steam power cycle uses a single gas turbine cycle for the air cycle...
1. A combined gas-steam power cycle uses a single gas turbine
cycle for the air cycle and a simple Rankine cycle for the water
vapor cycle. Atmospheric air enters the compressor at a rate of
88.2 lbm / s, at 14.7 psia and 59 ° F, and the maximum gas cycle
temperature is 1,742 ° F. The pressure ratio in the compressor is
7. The isentropic efficiency of both the compressor and the turbine
is 80%. Gas exits the heat...
Steam power plant using the reheat Rankine cycle
A steam power plant operates using the reheat Rankine cycle. Steam enters the high pressure turbine at 12.5 MPa and 550ºC at a rate of 7.7 kg/s and leaves at 2MPa. Steam is then reheated at a constant pressure to 450ºC before it expands in the low pressure turbine. The isentropic efficiencies of the turbine and the pumpare 85% and 90%, respectively. Steam leaves the condenser as a saturated liquid. If the moisture content of the steam at the exit...
8.12 Water is used as the working fluid in an ideal Rankine cycle. The steam is supplied as superheated steam at 30 bar,...
8.12 Water is used as the working fluid in an ideal Rankine cycle. The steam is supplied as superheated steam at 30 bar, 440°C. The condenser pressure is 0.5 bar. If isentropic efficiency of turbine and pump are 90% and 85%, respectively, determine the thermal efficiency of the cycle.
Problem 2. (11 points) The ideal simple Rankine operates at a pressure of 100 kPa in the condenser and at a pressure of 4.5 MPa in the evaporator. The liquid leaving the condenser is a saturated mixture with quality x-0.8. The mass flow rate of steam in the cycle is 1.5 kg/s. Plot the cycle on power-generation cycle using steam (a) T-s diagram for steam; and determine (b) What is the maximum temperature (°C) of this Rankine cycle (c) the...
A nuclear power plant based on the Rankine cycle operates with a boiling-water reactor to develop net cycle power of 3 MW. Steam exits the reactor core at 100 bar, 52O degree C and expands through the turbine to the condenser pressure of 1 bar. Saturated liquid exits the condenser and is pumped to the reactor pressure of l00 bar. Isentropic efficiencies of the turbine and pump are 81% and 78%, respectively. Cooling water enters the condenser at 15 degree...
Consider a steam power plant which operates on the simple ideal
Rankine cycle (shown in the next page), where the boiler pressure
is 3 MPa and the condenser saturation temperature is 50°C. The
temperature at the exit of the boiler is 500°C. Water leaves the
condenser as a saturated liquid. The mass flow rate through each
component is 15 kg/s. Calculate:
1. The power output of the steam power plant
2. The thermal efficiency of the steam power plant
Now,...
HW-33 (25 points) Superheated steam at an absolute pressure of 20 MPa and a temperature of 560°C flows into the turbine of a Rankine cycle. The absolute pressure at the turbines outlet is 0.5 bar, and liquid exits the condenser at an absolute pressure of 0.4 bar and a temperature 75°C. The absolute pressure is increased to 20.1 MPa across the pump. The turbine and pump have isentropic efficiencies of 81% and 85%, respectively. Cooling water enters the condenser at...
(1) Q.5 (a) A power station using a Superheated Rankine cycle operates with a boiler pressure of 160 bar and a condenser pressure of 0.045 bar. The turbine has an inlet steam temperature of 575°C, and has an isentropic efficiency of 90.5%. The pump has an isentropic efficiency of 88%. Hence, determine Show the cycle on a T-s diagram in relation to the saturation curves and clearly label all the principal points starting from the exit of the condenser. Sketch...
1. A combined gas-steam power cycle uses a single gas turbine
cycle for the air cycle and a simple Rankine cycle for the water
vapor cycle. Atmospheric air enters the compressor at a rate of
88.2 lbm / s, at 14.7 psia and 59 ° F, and the maximum gas cycle
temperature is 1,742 ° F. The pressure ratio in the compressor is
7. The isentropic efficiency of both the compressor and the turbine
is 80%. Gas exits the heat...
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