H.WSteam flows steadily throughan adiabatic turbine. The inletconditions of the steam are 10 MPa, 450°C, and 80 m/s, andthe exit conditions are 10 kPa, 92 percent quality, and 50 m/s.The mass flow rate of the steam is 12 kg/s. Determine(a) the change in kinetic energy, (b) the power output, and(c) the turbine inlet area.2- In a gas turbine unit, the gases flow through the turbine is15 kg/s and the power developed by the turbine is 12000 kW.The enthalpies of gases at the inlet and outlet are 1260 kJ/kgand 400 kJ/kg respectively, and the velocity of gases at theinlet 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 ofthe gases at the inlet is 0.45 m3/kg.3- Steam enters a nozzle at 400°C and 800 kPa with a velocityof 10 m/s, and leaves at 300°C and 200 kPa while losing heatat a rate of 25 kW. For an inlet area of 800 cm2, determine thevelocity and the volume flow rate of the steam at the nozzleexit.

as per rule 1 solved 1st question with subparts

Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 10 MPa, 450°C, and 80 m/s, and the exit conditions are 10 kPa, 92 percent quality, and 50 m/s. The mass flow rate of the steam is 12 kg/s. Determine (a) the change in kinetic energy, (b) the power output, and (c) the turbine inlet area.

Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 10 MPa, 450°C, and 80 m/s, and the exit conditions are 10 kPa, 92 percent quality, and 50 m/s. The mass flow rate of the steam is 12 kg/s. Determine (a) the change in kinetic energy, (b) the power output, and (c) the turbine inlet area.

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

Refrigerant R-134a enters to the compressor of a refrigeration machine at a pressure of 140 kPa and a temperature of -10 °C, then comes out at a pressure of 1 MPa . Volumetric flow of the refrigerant entering the compressor 0.23 m3 /minute. Refrigerant enters throttling valve at 0.95 MPa pressure and 30 °C, and comes out the evaporator at -18 °C as saturated steam. Adiabatic efficiency of the compressor It is 78%. Show the cycle in the T-s diagram. Then calculate: a) Power required to run the compressor b) The heat withdrawn from the cooled environment in unit time, COPsm=? c)Between the evaporator and the compressor, pressure drop of the refrigerant and its heat gain.
A steam turbine is used to generate electric power in a small-scale process industry. The turbine receives superheated steam at 12.5 MPa absolute pressure and 700°C Superheated Steam temperature. It rejects the exhaust steam as saturated vapor at 1000 kPa absolute pressure. Wout The mass flow rate of the steam while flowing through the turbine is 10.5 kg/sec. Steam Turbin e The outlet pipe diameter is 18 cm. Saturated Vapor Note: • Neglect the changes in the kinetic and potential energies Neglect the heat losses from the turbine • The specific enthalpy of steam at the inlet of the turbine is approximately equal to |kJ/kg • The specific enthalpy of steam at the outlet of the turbine is approximately equal to kJ/kg • The specific volume of the steam at the outlet of the turbine is approximately equal to m3/kg • The density of the steam at the outlet of the turbine is approximately equal to kg/m3 • The (absolute) work developed by turbine is approximately equal to kW • The exit velocity…
Air is expanded from 1000 kPa and 600°C at the inlet of asteady-flow turbine to 100 kPa and 200°C at the outlet. The inletarea and velocity are 0.1 m2 and 30 m/s, respectively, and the outletvelocity is 10 m/s. Determine the mass flow rate and outlet area.
Air at temperature 27 oC and pressure 66.3 kPa enters the diffuser steadily with a velocity of 190 m/s. The inlet area of the diffuser is 0.6m2. The air leaves the diffuser with nearly zero velocity. Determine the mass flow rate in kg/s of the air. Use R=0.287 kJ/kgK.
A pump increases the water pressure from 70 kPa at the inlet to 700 kPa at the outlet. Water enters this pump at 45 oC through a 1.5 cm diameter opening and exits through a 2.1 cm diameter opening. Determine the velocity of the water at the (a) inlet and (b) outlet when the mass flow rate through the pump is 1.4 kg/s. Submit your solution by multiplying (a)*(b) = Format answer : 46.84 Submit
In a place where the outdoor air temperature is 30°C, the air is compressed from its current temperature to 800 kPa pressure continuously and isothermally.The flow rate of the air is 1.5 kg/second.Since the compressor works with 60% efficiency;(a) how much power must be supplied to the compressor?(b) calculate the outlet temperature of the air?
Refrigerant-134a enters an adiabatic compressor at 100 kPa and 0 "C with a volumetric flow rate of 0.3 m3/s and leaves at a pressure of 700 kPa. The power input to the compressor is 35 kW. Using the property tables for R-134a in Appendices A-11 to A-13, Determine the following stream properties and report them in the units shown and to the requested decimal place: A. The mass flow rate of the refrigerant: kg/s (Report to 3 decimal places, eg: 0.123) B. The enthalpy of the exit stream: KJ/kg (Report to 2 decimal places, eg: 0.23) C. The temperature of the exit stream: °C (Report to 1 decimal place, eg: 0.1) 100 KPa, 0°C V = 0.3 m³ /s %3D A A R-134 a 35 KW 700 KPa
A pump increases the water presssure from 8kPa at the inlet to 700 kPa at the outlet. Water enters this pump at 41.51 degrees celsius through a 1.145-cm-diameter opening and exits through a 2.821-cm-diameter opening. Determine the velocity of the water at the outlet in m/s when the mass flow rate through the pump is 1.354kg/s. The specific volume of incoming water is 1.547x10-3m3/kg.
The gas turbine unit is rejecting heat at certain rate but your clientis unsure about it. To convince your client calculate the rate of heatrejected from the gas turbine. The gases flow through the turbine at17 kg/s and the power developed by the turbine is 13 MW. Thespecific enthalpies of the gases at the inlet and outlet are1200 kJ/kg, and 350 kJ/kg respectively. The velocities of thegases at the inlet and outlet are 60 m/s and 140 m/s respectively
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 gas flows steadily through a rotary compressor at a temperature of 16 ⁰C, a pressure of 100kPa, and an enthalpy of 392.2 kJkg-1. The gas leaves the compressor at a temperature of 245⁰C, a pressure of 0.6 MPa and an enthalpy of 534.5 kJkg-1. There is no heat transfer to or fromthe gas as it flows through the compressor. Using the steady flow equation appropriate toeach case, evaluate the external work done per unit mass of gas: a) when the inlet and exit velocities of the gas are negligible b) when the inlet velocity of the gas is 80 ms-1 and the exit velocity of the gas is 160 ms-1.
The mass flow rate of compressed liquid water through a pump is 20 kg/s and the pressure is increased from 10kPa to 1000 kPa. If the inlet temperature is 30°C, the pump power is: