2- In a gas turbine unit, the gases flow through the turbine is 15 kg/s and the power developed by the turbine is 12000 kW. The enthalpies of gases at the inlet and outlet are 1260 kJ/kg and 400 kJ/kg respectively, and the velocity of gases at the inlet and outlet are 50 m/s and 110 m/s respectively. Calculate (i) The rate at which heat is rejected to the turbine, and (ii) The area of the inlet pipe given that the specific volume of the gases at the inlet is 0.45 m3/kg.

2- In a gas turbine unit, the gases flow through the turbine is 15 kg/s and the power developed by the turbine is 12000 kW. The enthalpies of gases at the inlet and outlet are 1260 kJ/kg and 400 kJ/kg respectively, and the velocity of gases at the inlet and outlet are 50 m/s and 110 m/s respectively. Calculate (i) The rate at which heat is rejected to the turbine, and (ii) The area of the inlet pipe given that the specific volume of the gases at the inlet is 0.45 m3/kg.

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

Q5: A-Steam enters a turbine with a velocity of 50m/s and specific enthalpy 2690 kJ/kg . the steam leaves the turbine with a velocity of 25 m/s and specific enthalpy 1300 kJ/kg . the heat lost tothe surroundings as the steam passes through the turbine is 25 kJ/kg .the steam flow rate is 32400kg/h determine the work output from the turbine in kilowatts. B- 0.015 m° gas at a pressure of 4.070 Kpa expands to a pressure of 0.00207 bar according to the law pV'°=C -Determine a- the final volume b- the work heat transferred during the expansion. Take (the molecular weight of the gas =24 and specific heat at constant volume =0.866 kJ/kg .K) .
Steam enters a turbine with a velocity of 16 m/s and specific enthalpy 2990kJ/kg. The steam leaves the turbine with a velocity of 37 m/s and specific enthalpy 2530kJ/kg. The heat lost to the surroundings as the steam passes through the turbine in 25 kJ/kg. The steam flow rate is 324000 kg/h. Determine the work output from the turbine in kilowatts
B. In the turbine of a gas turbine unit the gases flow through the turbine at 14+24 kg/s and the power develop by the turbine is 16000 kW. The specific enthalpies of the gases at inlet and outlet are 1200 kJ/kg and 180 kJ/kg respectively, and the velocities of the gases at inlet and outlet are 65 + 24 m/s and 140 m/s respectively. Calculate the rate at which heat is rejected from the turbine.
In a gas turbine , the flow rate of air is 4 kg/sec . The velocity and enthalpy of air at the entrance are 200 m/sec and 6000 KJ/kg respectively . At the exit , the velocity is 100 m/sec and enthlpy is 5000 KJ /kg . A loss of heat of 40 KJ/kg occurs while the air passes through the turbine . Determine the power developed by the turbine
The gases flow through a gas turbine at the rate of 17kg/s and the power developed by the turbine is 14MW.The enthalpies of the gases at inlet and outlet are 1200kJ/kg and 360kJ/kg respectively, and the velocities of the gases inlet and outlet are 60m/s and 150m/s respectively. Calculate the rate of heat rejected from the turbine and the area of the inlet pipe given that the specific volume of the gases at inlet is 0.5m3/kg.
In an adiabatic turbine, this steam flow is 50 kg / s. The power produced by the turbine is 29 MW.Steam enters the turbine with a pressure of 50 bar and a speed of 60 m / s. At the outlet, at a pressure of 0.06 barIt comes out as saturated water with a speed of 130 m / s. Accordingly, the heat lost by the turbine andFind the turbine inlet and outlet temperatures of steam
A rotary air compressor is required to deliver 900 kg of air per hour. The enthalpy of the air at inlet and exit are 300 kJ/kg and 500 kJ/kg, respectively. The air velocity at the entrance and exit are 10 m/s and 15 m/s, respectively. The rate of heat loss from the compressor is 2500 W. Determine the power required to drive the compressor. Provide complete solution with diagram
. In the turbine of a gas turbine unit the gases flow through the turbine at 14+04 kg/s and the power develop by the turbine is 16000 kW. The specific enthalpies of the gases at inlet and outlet are 1200 kJ/kg and 180 kJ/kg respectively, and the velocities of the gases at inlet and outlet are 65 +04 m/s and 140 m/s respectively. Calculate the rate at which heat is rejected from the turbine
In a steady flow apparatus, 135 kJ of work is done by each kg fluid. The specific volume of the fluid, pressure, and speed at the inlet are 0.37 m^3/kg, 600 kPa, and 16 m/s. The inlet is 32 m above the floor, and the discharge pipe is at the floor level. The discharge conditions are 0.62 m^3/kg, 100 kPa, and 270 m/s. The total heat loss between the inlet and discharge is 9 kJ/kg of fluid. In flowing through this apparatus, determine the specific internal energy increase or decrease in kJ/kg.
2000 kg/h of waste materials with enthalpy of 100 kJ/kg entered a turbine and exited with 20 m/s velocity and enthalpy of 2500 kJ/kg. Then, for every kilogram of waste materials, it releases 500 kJ of heat. What is the net work output of this system?
A 1.8kg/s of steam expands in a turbine producing 550 kW of power output. The steam enters at a velocity of 18 m/s and exits at 70 m/s. The reduction of specific enthalpy is 400 kJ/kg. Determine that the heat flow per second when the inlet of the turbine is located 900mm above the outlet.
In a continuous flow open system, the inlet velocity of the flowing fluid is 30 m/s, and the outlet enthalpy is 100 kJ/kg less than the inlet enthalpy. The entry point of the system is 1.5 m higher than the exit point.a) Calculate the exit velocity since the system does not exchange heat and work with its surroundings.b) Since the system is adiabatic and the velocity of the fluid at the outlet is 150 m/s, find the work done by 1 kg of fluid.c) Since there is no heat exchange between the system and its surroundings and the velocity of the fluid at the exit is 30 m/s, find the heat exchange of 1 kg fluid with the environment.