A Rankine Cycle power generation plant generates electricity from the burning of recycled biomass. The Rankine Cycle uses a steam turbine to produce 150 MW of nett work on the shaft. As the steam enters the Steam Turbine, it has already been heated to temperature of 600°C and a pressure of 10 MPa. The unit rejects heat to the atmosphere in a condenser operating at a partial vacuum pressure of 50 kPa. Determine the rate of heat transfer to the working fluid passing through the steam generator, in kJ per kg of steam flowing Determine the rate of heat transfer to the working fluid passing through the steam generator, in kJ per kg of steam flowing Determine the thermal efficiency of the cycleDetermine the rate of heat transfer from the working fluid passing through the condenser to the cooling water, in kJ per kg of steam flowing.

A Rankine Cycle power generation plant generates electricity from the burning of recycled biomass. The Rankine Cycle uses a steam turbine to produce 150 MW of nett work on the shaft. As the steam enters the Steam Turbine, it has already been heated to temperature of 600°C and a pressure of 10 MPa. The unit rejects heat to the atmosphere in a condenser operating at a partial vacuum pressure of 50 kPa. Determine the rate of heat transfer to the working fluid passing through the steam generator, in kJ per kg of steam flowing Determine the rate of heat transfer to the working fluid passing through the steam generator, in kJ per kg of steam flowing Determine the thermal efficiency of the cycleDetermine the rate of heat transfer from the working fluid passing through the condenser to the cooling water, in kJ per kg of steam flowing.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Steam enters the high-pressure turbine of a steam power plant that operates on the ideal reheat Rankine cycle at 800 psia and 900F and leaves as saturated vapor. Steam is then reheated to 800F before it expands to a pressure of 1 psia. Heat is transferred to the steam in the boiler at a rate of 6 * 104 Btu/s. Steam is cooled in the condenser by the cooling water from a nearby river, which enters the condenser at 45F. Show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the pressure at which reheating takes place, (b) the net power output and thermal efficiency, and (c) the minimum mass flow rate of the cooling water required.
Condenser a steam power plant that operates on a simple ideal ranking cycle and has a net power output of 22MW. Steam enters the turbine at 7Mpa and 450.05°C and is cooled in the condenser at a pressure of 10kpa by running cooling water from a lake through the tubes of the condenser at rate of 1750 kg/s. Determine the mess flow rates of steam through the steam turbine assuming that the cp of superheated steam is 2.9593kJ/kg.K.
Steam enters the turbine of a steam power plant that operates on a simple ideal Rankine cycle at a pressure of 6 MPa, and it leaves as a saturated vapor at 7.5 kPa. Heat is transferred to the steam in the boiler at a rate of 40,000 kJ/s. Steam is cooled in the condenser by the cooling water from a nearby river, which enters the condenser at 158C. Show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the turbine inlet temperature, (b) the net power output and thermal efficiency, and (c) the minimum mass flow rate of the cooling water required.
1. Consider a steam power plant that operates on a simple ideal Rankine cycle and has a net power output of45 MW. Steam enters the turbine at 7 MPa and 500°C and iscooled in the condenser at a pressure of 10 kPa by runningcooling water from a lake through the tubes of the condenserat a rate of 2000 kg/s. Show the cycle on a T-s diagram withrespect to saturation lines, and determine (a) the thermal efficiency of the cycle, (b) the mass flow rate of the steam, and(c) the temperature rise of the cooling water. Answers:(a) 38.9 percent, (b) 36 kg/s, (c) 8.4°C 2. Consider a 210-MW steam power plant that operateson a simple ideal Rankine cycle. Steam enters the turbine at10 MPa and 500°C and is cooled in the condenser at a pressure of 10 kPa. Show the cycle on a T-s diagram with respectto saturation lines, and determine (a) the quality of the steamat the turbine exit, (b) the thermal efficiency of the cycle,and (c) the mass flow rate of the steam. Answers: (a) 0.793,(b) 40.2 percent, (c) 165…
A steam power plant with a closed feedwater Heater operates on a regenerative Rankine cycle with reheating. Steam enters the turbine at 8 MPa pressure and 5YX C temperature, 1Y kg/s flow rate, and condenses in the condenser at 2X kPa pressure. The intermediate heating is condensing at a pressure of 3 MPa. Intermediate heating is done at a pressure of 3 MPa and the steam is heated to a temperature of 5X0 C. Some steam is separated from the low pressure turbine at a pressure of 1 MPa, after it is completely condensed in the closed feed water heater, it is pumped to a pressure of 8 MPa before mixing with the feed water at the same pressure. Assuming the isentropic efficiencies of the turbines and pumps are 8Y.X%, calculate (a) the temperature of the steam at the inlet of the closed feedwater heater, (b) the mass flow rate of the steam leaving the turbine for the closed feedwater heater, (c) the net power, and (d) the thermal efficiency.note: x=2,y=7
An ideal reheat 210 MW Rankine cycle with water as the working fluid operates the boiler at 15 MPa, the reheater at 2 MPa, and the condenser at 10 kPa. The temperature is 500 0C at the entrance of the high-pressure and low-pressure turbines. Determine (a) the quality of the steam at the low-pressure turbine exit, (b) the thermal efficiency of this system, and (c) the rate of heat transfer in the reheater.
The pressure in the boiler of a steam power plant operating on the ideal Rankine cycle is 1250 psia. The condenser pressue is 2 psia. The mass flow rate of steam through the system is 75 lbm/s and the quality of the steam at the turbine exit is 0.9. Show the cycle on a T-s diagram, and determine (a) the turbine inlet temperature, (b) the rate of heat input in the boiler, and (c) the thermal efficiency of the cycle.
TNB steam power plant in Genting Highlandsoperates on reheat Rankine cycleand has power net output of 50MW. Steam enters the turbine at 12MPa and 500 °C and it is cooled in the condenser at a pressure of 12kPa by running cooling water from the Bertam River through the tubesof condenser. Steam enters both stages of the turbine at b°C. If the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, show the cycle on a T-s diagram and determine;i.The pressure at which reheating takes place, ii.The thermal efficiency of the cycleandiii.Please justify how does the thermal efficiency of the cycle if the temperature to low turbine is increase to 600°C?
What is the heat transfer rate at the condenser in an actual power cycle of 100,000 kW rating with turbine efficiency of 0.80 and having steam fed up in a turbine at 7500 kPa and 450 C. The steam going out of the turbine is at 24 kPa. The condenser produces saturated liquid. Assume negligible pump work.
A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor-compression refrigeration cycle between 0.12 and 0.9 MPa. The mass flow rate of the refrigerant is 0.05 kg/s which exits the condenser as saturated liquid. (a) Show the cycle on a P-h and T-s diagram with respect to saturation lines. (b) Determine the rate of heat removal from the refrigerated space and the power input to the compressor, and (c) the coeifficient of performance.
In a steam power plant operating according to the ideal Rankine cycle at 4MPa pressure and 400CIt enters and condenses in the condenser at a pressure of 100kPa. Determine the efficiency of the cycle.What would the efficiency be if the steam entered the turbine at 5MPa pressure and condensed at 90kPa pressure.
A steam turbine cycle running on a Rankin cycle between a condenser pressure of 10 kPa and a boiler pressure of 20 MPa, the steam enters the high pressure turbine at a temperature of 600 ° C. The average turbine expands to 800 kPa and then enters the boiler again to be reheated to 500 ° C. The steam leaves the boiler to a low pressure turbine, where it expands to the condenser pressure. If the expansion and compression in the turbine and the pump is isotropic, and the addition of heat is constant pressure, find the efficiency of the cycle. Note point # 1 at the vapor exit region of the condenser