model with k= 5/3. Ignore the effects of motion and gravity. Let T,=20 °C, Po=1 bar a) What are the possible turbine exit temperatures? Report a range in K. Determine the power developed and exergy destroyed (in kW) for the minimum turbine b) exit temperature. c) Determine the power developed and exergy destroyed (in kW) for the maximum turbine exit temperature. Plot each of the following versus the turbine exit temperature, in K. d) The power developed, in kW. e) The rate of exergy destruction in the turbine, in kW. 6The exergetic turbine efficiency, as a percentage.

model with k= 5/3. Ignore the effects of motion and gravity. Let T,=20 °C, Po=1 bar a) What are the possible turbine exit temperatures? Report a range in K. Determine the power developed and exergy destroyed (in kW) for the minimum turbine b) exit temperature. c) Determine the power developed and exergy destroyed (in kW) for the maximum turbine exit temperature. Plot each of the following versus the turbine exit temperature, in K. d) The power developed, in kW. e) The rate of exergy destruction in the turbine, in kW. 6The exergetic turbine efficiency, as a percentage.

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

Air enters the diffuser of a ramjet engine (schematic shown below) at 6 lbf/in.2, 420°R, with a velocity of 1600 ft/s, and decelerates essentially to zero velocity. After combustion, the gases reach a temperature of 2200°R before being discharged through the nozzle at 6 lbf/in.2 On the basis of an air-standard analysis, determine:(a) the pressure at the diffuser exit, in lbf/in.2(b) the velocity at the nozzle exit, in ft/s.Neglect kinetic energy except at the diffuser inlet and the nozzle exit. Assume combustion occurs at constant pressure and flow through the diffuser and nozzle is isentropic.
In a steam turbine system, suppose the value of ∆mH is constant (meaning, inlet and outlet conditions are maintained). From the energy balance equation, Qnet + Wnet = ∆mH + ∆KE + ∆PE or −0.1209 kW − 70 kW = ??̇? + 8.75 kW − 0.0068kW 1. What will happen to Wnet if there was no increase in kinetic energy, will the magnitude of Wnet increase or decrease? What should be the sign of potential energy so that Wnet will increase in magnitude?2. For a turbine system, what should happen to Qnet, ∆KE, and ∆PE to maximize the work done by the turbine? Which factor is the most significant?
Assuming the clearance is negligible for a single stage compressor with the following data : Atmospheric pressure = 90 kPa, Atmospheric temperature = 17 degrees, Delivery pressure = 7 bar, Free air delivery flow rate = 0,2 m³/min. Take n= 1,3, Cp=1,005 KJ/Kg K, Cv=0,718 KJ/Kg K Determine the following : A) Which formula is used to evaluate the delivery temperature for an isentropic? B) the delivery temperature of air for a polytropic compression process with n=1,25 in Kelvin to 1 decimal place? C) the mass flow rate of air inside the compressor operating isentropically in kg/min to 3 decimal places? D) the power input to the compressor in kW to 2 decimal places if the compression is polytropic compression process with n=1,25? E) the power input to the compressor in kW to 3 decimal places if the compression reversible isothermal? F) the power input to the compressor if the compression is isentropic in kW to 3 decimal places? G) the delivery temperature of air for an isentropic…
1/Air at 8 bar, 100°C flows in a duct of 15 cm diameter at rate of 150 kg/min. It is then throttled by a valve unto 4 bar pressure. Determine the velocity of air after throttling and also show that enthalpy remains constant before and after throttling.
Two gaseous stream enter a combining tube and leave as a single mixture. The entrance data for one of the gas, A1=75 in2, v1=500 fps, V1=10 ft3/lb; for the other gas, A2=50 in2, m2=600 lb/hr, p=0.12 lb/ft3. At exit, v3=350 fps, V3=7 ft3/lb. Find the mass flow rate (in lb/hr) at the exit section. a. 157,800 b. None of these c. 140,200 d. 153,750 e. 94,351
Steam at 80 bar, 440 °C, enters aturbine operating at steady state with avolumetric flow rate of 236 m 3 /min.Twenty percent of the entering massflow exits through a diameter of 0.25m at 60 bar, 400 °C. The rest exitsthrough a diameter of 1.5 m with apressure of 0.7 bar and a quality of 90%. Determine the velocity at each exitduct, in m/s.
Air flows steadily through an engine at constant temperature, 127 deg C. Assuming that the Kinetic and Potential energies are negligible and if the exit pressure is one-fourth of the initial pressure, in which the initial pressure is 702 kPa, the work per mass is Answer kJ (nearest whole number).
Q22(i) Construct the flow chart (diagram) and compute the total heat required to convert 900 g of ice at –30°C to steam at 145 °C. (Cice = 2090 J/kg.°C, Cwater = 4186 J/kg.°C, Csteam = 2010 J/kg.°C, Lf = 3.33 × 105 J/kg, Lv = 2.26 × 106 J/kg.)
55 kmol per hour of air is compressed from P1 = 1 bar to P2 = 6.1 bar in a steady flow compressor. Delivered mechanical power is 98.9 kW. Temperatures and velocities are: T1 = 301K T2 = 520 K, u1 = 10.8 m/s and u2 = 3.8 m/s. Estimate the rate of heat transfer from the compressor in kW, 3 decimal values. Assume that Cp = 7/2R and that enthalpy is independent of pressure.
A converging–diverging nozzle operates at steady state. Air as an ideal gas with k = 1.4 flows through the nozzle, discharging to the atmosphere at 14.7 lbf/in.2 and 520°R. A normal shock stands at the exit plane with Mx = 2.3. The exit plane area is 4.8 in.2 Upstream of the shock, the flow is isentropic.Determine:(a) the stagnation pressure p0x, in lbf/in.2(b) the stagnation temperature T0x, in °R.(c) the mass flow rate, in lb/s.
The O2 input conditions to a nozzle, which operates in steady state, are 60 bar, 300 K and 1 m/s. The gas expands isentropically at 30 bar. Determine the output speed in m/s. Assume that oxygen is described by the Peng-Robinson equation
Air flows through a nozzle. It enters at 20 bar and 1100°F and exits at 10 bar and 800°F. The inlet diameter ratio between outlet diameter is 3. Consider steady state, determine air inlet and outlet velocities, in ft/s