m S Steam is accelerated in a nozzle from a velocity of 80 to an unknown outlet velocity. The area at the inlet to the nozzle is A₁ = 50 cm². The temperature and pressure at the inlet to the nozzle are T₁ = 400°C and P₁ = 50 bar, respectively, and the outlet temperature and pressure are T₂ = 300°C and P2 = 20 bar, respectively. During the steady-state flow, heat is lost from the nozzle walls at a rate of 120 kW. For the nozzle: vel₁ = 80 m A₁ = 50 cm² T₁ = 400 °C P₁ = 50 bar Qout= = 120 kW a) Determine the mass flow rate of the steam entering the nozzle, in units of [] b) Determine the velocity at the outlet of the nozzle, in units of [m/s] c) Determine the area at the outlet of the nozzle, in units of [cm²] P2 = 20 bar T₂ = 300 °C

m S Steam is accelerated in a nozzle from a velocity of 80 to an unknown outlet velocity. The area at the inlet to the nozzle is A₁ = 50 cm². The temperature and pressure at the inlet to the nozzle are T₁ = 400°C and P₁ = 50 bar, respectively, and the outlet temperature and pressure are T₂ = 300°C and P2 = 20 bar, respectively. During the steady-state flow, heat is lost from the nozzle walls at a rate of 120 kW. For the nozzle: vel₁ = 80 m A₁ = 50 cm² T₁ = 400 °C P₁ = 50 bar Qout= = 120 kW a) Determine the mass flow rate of the steam entering the nozzle, in units of [] b) Determine the velocity at the outlet of the nozzle, in units of [m/s] c) Determine the area at the outlet of the nozzle, in units of [cm²] P2 = 20 bar T₂ = 300 °C

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

Mechanical Engineering A steam turbine receives hot & pressurized steam from the inlet (port 1 in the figure), produces work, and discharges steam at low pressure and temperature to the outlet (port 2). P1 = 1.5 x (modifier) MPa, T1 = 350 x (modifier) °C. P2 and T2 are given in the figure. The turbine is at a steady state. Kinetic energy and gravitational potential energy of the steam are negligible compared to its thermal energy. q is negligible Turbine w? P1= T = im =16 kg/s 2+ P, = 0.2 Mpa | T, = 150°C (a) Mass flow rate at the inlet is 10 kg/s. Compute the mass flow rate at the outlet. Show your reasoning (b) Determine the change of specific enthalpy of the steam between the inlet and the outlet. You can assume the specific heat of steam remains essentially constant during the process, with C, = 1.9 kJ/kg.K (c) Compute the work produced by the steam turbine, per unit mass of steam. (d) Compute the power production from the turbine. Power is the work produced per time, and its most…
Please show your solution step by step and clearly thank you
A perfect gas has a value of R=58.8 ft.lb/lb.R and k=1.26. If 20 Btu are added to 5 lb of this gas at constant volume when the initial temperature is 90° F, find (a) ∆U and (b) work for a nonflow process.
Ki a, ICspCctivcry. Q9/ The properties of a closed system change following the relation between pressure and volume as PV = 3.0 where p is in bar V is in m3. Calculate the work done when the pressure increases from 1.5 Pa to 7.5 Pa. Q10/ A cylinder contains 1 kg of a certain fluid at an initial pressure of 20 bar. The fluid is allowed to expand reversibly behind a piston according to a law PV2 = constant until the volume is doubled. The fluid is then cooled reversibly at constant pressure until the piston regains its original position; heat is then supplied reversibly with constant volume until the pressure rises to the original value of 20 bar. Calculate the net work done by the fluid, for an initial volume of 0.05 m2. (-4.83 J) (25 kJ)
3. A fluid system undergoes a non-flow frictionless process from 5.5 ft to a final volume 2.5 ft in accordance with the defining relation P= 60/V + 23 psi, where volume is in ft. During the process the system reject 30 BTU of heat. Determine the change in enthalpy and internal energy.
A perfect gas has a value of R = 316 J/kg-K and k = 1.26. If 21 kJ of heat are added to 2.5 kg of this gas during an isometric process when the initial temperature is 32 deg. C, determine: (a) the final temperature in deg. C 312 292 39 (b) the change in enthalpy in kJ 28.46 26.46 23.46 (c) the change in entropy in kJ/K 0.087 0.167 0.067
16-Air of mass 0.018kg at a pressure of 1.01bar and a volume of 0.015m3 was compressed adipatia until its temperature became 507.5K Calculate the work performed on the air in the cylinder if you know that R = 0.282 KJ / Kg.k and y = %3D 1.4 *
A slingshot, which can be modeled as a spring with spring constant k = 81.9 N/m, is stretched by 22 cm with respect to its equilibrium position and used to shoot a rock with mass 0.09 kg straight up into the air. Find the speed of the rock (in m/s) when it reaches a height which is 25% of its maximum height (relative to the position at which it was shot from). Use g = 9.81 m/s?. Hint: First find the maximum height, and then find the speed when the height is 25% of that.
Two kilograms of water are contained within a piston and cylinder assembly, with a massless piston, acted upon by a linear spring and the outer atmosphere. Initially the spring force is zero and P1 = P0 = 100 kPa with a volume of 0.2 m3. If the piston just rubs the upper supports the volume is 0.8 m3 and T = 600 ° C. Now some heat is added until the pressure reaches 1.2 MPa. The final temperature, plot the processes on the P-V diagram and find the work that is done during the process.
Q. - ome kg of an ideal gas (R = 287 J um irreversible Process from Stelte - 0 [1 bar, 300 k] to State - [2 bar, 300k]. The entropy change (S2-S1) J kg-k
One kilogram of steam in a cylinder accepts 170 kJ of heat transfer while the pressure remains constant at 1000 kPa. Estimate the temperature T2 if T1 = 320 C.
Oxygen (molar mass 32 kg/kmol ) expands reversibly in a cylinder behind a piston at a constant pressure of 3.102 bar. The volume initially is 0.0119 m and finally is 0.0327 m; the initial temperature is 18.24 °C. Calculate the heat supplied during the expansion in the correct unit to two decimal places. Assume oxygen to be a perfect gas and take the specific heat at constant pressure as = 0.917 kJ/kg Kand molar gas constant as = 8,314 J/ kmol K