Rankine
In a Rankine cycle, the enthalpies at turbine
entry and outlet are 3159 kJ/kg and 2187 kJ/kg.
respectively. If the specific pump work is
2 kJ/kg, the specific steam consumption (in
kg/kW-h) of the cycle based on net output is
Homework Answers
Find efficiency of the cycle
In the Rankine cycle for a steam power plant the turbine entry and exit enthalpies are 2803 kJ/kg and 1800 kJ/kg, respectively. The enthalpies of water at pump entry and exit are 121 kJ/kg and 124 kJ/kg respectively. The specific steam consumption (in kg/kWh) of the cycle is
Perform calculation of steam Rankine cycle and study ORC systems: o Steam Rankine cycle: ▪ Assume...
Perform calculation of steam Rankine cycle and study ORC systems: o Steam Rankine cycle: ▪ Assume steady-state with 1 kW power output ▪ Evaporating temperature is 75°C. The quality of the heater outlet is q = 1. ▪ Condensing temperature is 35 °C. The quality of the cooler outlet is q = 0. ▪ The adiabatic efficiency of the turbine is 70% ▪ The adiabatic efficiency of the pump is 80% ▪ Calculate these values using the steam tables: •...
(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...
3. (40 pts) A steam power plant based on the Rankine cycle, shown in the below,...
3. (40 pts) A steam power plant based on the Rankine cycle, shown in the below, operates to develop net cycle power. Saturated vapor at 8 bar enters the turbine where it expands to the condenser pressure of 1 bar. Water liquid exits the condenser 30 °C and 1 bar and it is pumped to the boiler pressure of 8 bar. Isentropic efficiencies of the turbine and pump are 80% and 60%. Assume kinetic and potential energies are negligible at...
Question 16 A steam power plant operates on a Rankine cycle. The steam enters the turbine...
Question 16 A steam power plant operates on a Rankine cycle. The steam enters the turbine at 10,000 kPa and 580'C. It is condensed in the condenser at 6 kPa. The isentropic efficiencies of the pump and turbine are 95% and 94% respectively. Determine the following Properties: h1 = 151.53 kJ/kg, n 1-0.0010064 m g . h3 - 3573.7 kJ/kg, X ds = 0.8097 hg. 4 2416.62 kJ/kg a. Work input to the pump in (kJ/kg) b. Heat added in...
Question 5 1.5/3 points In a Rankine cycle, steam leaves the boiler and enters the ideal...
Question 5 1.5/3 points In a Rankine cycle, steam leaves the boiler and enters the ideal turbine at 6.9 MPala) as a saturated vapor. Condenser pressure is 6.9 kPaſa). The specific enthalpy of the subcooled condensate/feedwater at the discharge of the feedwater pump (h) is 166.36 kJ/kg. Identify the specific enthalpy (in kJ/kg) of the steam entering the turbine. 166.36 Calculate the quality (in %) of steam-water mixture leaving the turbine. Calculate the specific enthalpy (in kJ/kg) of the steam...
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...
Tutorial Questions 1 1. Water is the working fluid in an ideal Rankine cycle. The condenser...
Tutorial Questions 1.1. Water is the working fluid in an ideal Rankine cycle. The condenser pressure is kPa, and saturated vapor enters the turbine at 10 MPa. Determine the heat transfer rates, in kJ per kg of steam flowing, for the working fluid passing through the boiler and condenser and calculate the thermal efficiency.2. Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 16 MPa, and the condenser pressure is 8 kPa ....
A steam power plant design consists of an ideal Rankine cycle with regeneration. Steam enters Turbine...
A steam power plant design consists of an ideal Rankine cycle with regeneration. Steam enters Turbine 1 at P1 and T1 at the rate of m1 and exits at P2. A fraction (y') of the steam exiting Turbine 1 is diverted to a closed feedwater heater while the remainder enters Turbine 2. A portion (y'') of the steam exiting Turbine 2 at P3 is diverted to an open feedwater heater while the remainder enters Turbine 3. The exit of Turbine...
Please use engneering equation solver for this question 1 Simple Rankine cycle You are asked to...
Please use engneering equation solver for this question
1 Simple Rankine cycle You are asked to model simple Rankine cycle as represented on the right. The main cycle parameters are as follows: • Maximum pressure at the steam generator outlet: 150 bar • Condenser pressure: 0.05 bar • Maximum steam temperature: 540 °C • Steam flowrate: 450 kg/s • Isentropic efficiencies: turbine: 0.9, pump: 0.8 Questions: Condenser • Plot the cycle on a T-s diagram • What is the net...
(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...
3. (40 pts) A steam power plant based on the Rankine cycle, shown in the below, operates to develop net cycle power. Saturated vapor at 8 bar enters the turbine where it expands to the condenser pressure of 1 bar. Water liquid exits the condenser 30 °C and 1 bar and it is pumped to the boiler pressure of 8 bar. Isentropic efficiencies of the turbine and pump are 80% and 60%. Assume kinetic and potential energies are negligible at...
Question 16 A steam power plant operates on a Rankine cycle. The steam enters the turbine at 10,000 kPa and 580'C. It is condensed in the condenser at 6 kPa. The isentropic efficiencies of the pump and turbine are 95% and 94% respectively. Determine the following Properties: h1 = 151.53 kJ/kg, n 1-0.0010064 m g . h3 - 3573.7 kJ/kg, X ds = 0.8097 hg. 4 2416.62 kJ/kg a. Work input to the pump in (kJ/kg) b. Heat added in...
Question 5 1.5/3 points In a Rankine cycle, steam leaves the boiler and enters the ideal turbine at 6.9 MPala) as a saturated vapor. Condenser pressure is 6.9 kPaſa). The specific enthalpy of the subcooled condensate/feedwater at the discharge of the feedwater pump (h) is 166.36 kJ/kg. Identify the specific enthalpy (in kJ/kg) of the steam entering the turbine. 166.36 Calculate the quality (in %) of steam-water mixture leaving the turbine. Calculate the specific enthalpy (in kJ/kg) of the steam...
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...
Please use engneering equation solver for this question
1 Simple Rankine cycle You are asked to model simple Rankine cycle as represented on the right. The main cycle parameters are as follows: • Maximum pressure at the steam generator outlet: 150 bar • Condenser pressure: 0.05 bar • Maximum steam temperature: 540 °C • Steam flowrate: 450 kg/s • Isentropic efficiencies: turbine: 0.9, pump: 0.8 Questions: Condenser • Plot the cycle on a T-s diagram • What is the net...
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