A turbine is fed with a flow of 20 kg/s of water vapour at 4MPA. The steam is generated in a boiler that supplies it saturated to 6MPA, which is then strangled through a valve prior to entering the turbine to meet the conditions imposed. The process that occurs in the turbine can be considered adiabatic. It is known that at the exit of the turbine the substance is found at 0. 5 MPa. In addition, it is known that the isentropic efficiency of the process that happens in the turbine is 75% (a) Schematize the system. b) Determine the entropy generated by the strangulation (valve) and explain the effects of pressure drop on this specific process. c) Determine the actual power delivered by the turbine and the entropy generated by it process. (d) Represent the overall process (valve and turbine) in a diagram P-v and T-s.

A turbine is fed with a flow of 20 kg/s of water vapour at 4MPA. The steam is generated in a boiler that supplies it saturated to 6MPA, which is then strangled through a valve prior to entering the turbine to meet the conditions imposed. The process that occurs in the turbine can be considered adiabatic. It is known that at the exit of the turbine the substance is found at 0. 5 MPa. In addition, it is known that the isentropic efficiency of the process that happens in the turbine is 75% (a) Schematize the system. b) Determine the entropy generated by the strangulation (valve) and explain the effects of pressure drop on this specific process. c) Determine the actual power delivered by the turbine and the entropy generated by it process. (d) Represent the overall process (valve and turbine) in a diagram P-v and T-s.

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

A turbine operating in a continuous flow works adiabatically. The water vapor enters the turbine at a temperature of 650 C and comes out with 20 kPa pressure and 85% dryness. Find the mass flow rate (kg / sec) required to generate 10 MW of power from the system (ignore KE and PE changes)
Find the quality and internal energy of steam at 700 kPa and enthalpy of 2600 kJ/kg.
I have seen conflicting answers between 0.662 and 0.402
Please show complete solution.
Please give a detailed solution and each clearly
o At the inlet to a certain nozzle, the enthalpy of the gas is 3000 kJ/kg and velocity is negligible. At the discharge end of the nozzle, the enthalpy is 2762 kJ/kg. The nozzle is horizontal and flow through the nozzle is adiabatic find the velocity of gas at the nozzle exit.
At a flow rate of .5000 m3 / h, saturated air at a temperature of 2 ° C is heated sensibly up to a temperature of 40 ° C with the help of a heating coil. Find the amount of heat that should be given to the coil.
Question: Superheated vapor ammonia enters an insulatednozzle at 30°C, 1000 kPa, with a low velocity and at the steady rateof 0.01 kg/s. The ammonia exits at 300 kPa with a velocity of 450m/s. Find: Determine the temperature (or quality, if saturated) and theexit area of the nozzle. (with steps) THX!
In a Geothermal field, saturated steam at 5 MPa is available flowing at a rate of 90,000 kg/hr per extraction well. There will be two 25 Megawatts of steam turbine-generator units to be installed. Exhaust is at 7 kPa and the over-all efficiency of the the steam generator is 80%. How many wells has to be operated to drive the 2 units of steam generators at fulI capacity considering steam enters the turbine at 4.8 MPa? Sketch the plant schematic diagram and the t-s diagram.
A 130 L rigid tank initially contains nitrogen at 400 kPa, 100 K. Thetank is connected to a line which contains nitrogen at 10,000 kPa, 260 K.The valve is opened and nitrogen flows into the tank until half of thetank’s volume is filled with liquid nitrogen, at which point the valve isclosed. During the filling process heat is transferred from the tank tokeep the temperature constant at 100 K. Neglect KE and PE terms.Calculate the final pressure and quality, and the heat transferred inthe process.
Water at 50°C is cooled in a cooling tower which has an efficiency of 65%. The temperature of the surrounding air is 35°C dry bulb and 70% relative humidity. The heat dissipated from the condenser is 2,000,000kJ/hr. Find the capacity in liters per second of the pump used in the cooling tower.
A tank has 2 ?? of saturated water at 100 ???. It is heated until it is 400°C. What is the change in entropy of the water/vapor inside the tank? You can use: https://irc.wisc.edu/properties/