9.68 A nozzle is required to produce a steady stream of R-134a at 240 m/s at ambientconditions, 100 kPa, 20°C. The isentropic efficiency may be assumed to be 90%.Find by trial and error or verify that the inlet pressure is 375 kPa. What is the re-quired inlet temperature in the line upstream of the nozzle?

Answered: Image /qna-images/answer/2100aaaa-fbfe-4bdb-9e25-3d639c98c435.jpg

Answered: A nozzle is required to produce a…

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

The steam expands isentropically in a simple impulse turbine from 12 bar, 250°C with an enthalpy of 2035 k.J/kg to an enthalpy of 2584 ki/kg 2t 0.1 bar. The nozzle makes 20° with blade motion and the blades are symmetrical. Calculate the blade velocity that produces maximum efficiency for turbine speed of 3600 rom. Assume that the steam enters the nozzle with negiigible velocty.
A nozzle expands air isentropically from 400°C and 2 MPa to the atmosphere at 80 kPa. If the inlet velocity is small. What exit velocity, in m/s, can be expected?A. 500B. 600C. 900D. 1200
The jet engine turbine receives air at 2150 °R, 230psi. It exhausts to a nozzle at 35 psi, which in turn exhausts to the atmosphere at 7.5 psi. Find the nozzle inlet temperature and the nozzle exit velocity. Assume air-standard analysis, internally reversible processes and negligible kinetic energy out of the turbine.
The reheat pressure effect the operating variables and thus turbine performance. Repeat Problem 2 twice, using 0.6 and 1.0 MPa for the reheat pressure For the engine find W and ?? .
In a lenoir cycle, helium is taken in at 60 K with a pressure ratio of 8.45. The ratio of the volume between the start and end of heat rejection is 3.99. Find the change in entropy in BTU/lb-R of the heat addition process. use R= 8.314 kJ/ kmol -K, k=1.667, mw = 4 g/mol
I need the final answer only. A steam turbine operating at 5Mpa, 400C( h = 3195.7 KJ/kg) has an exhaust pressure of 100 Kpa( h = 2475 KJ/kg). It is made of two-row, velocity compounded stage at the vapor region of expansion with a blading efficiency of 74%.For a 5% rotational and leakage allowance, find the actual enthalpy of the exhaust.
Need help with this engineering problem. PLEASE DO NOT REJECT! The jet engine turbine receives air at 2150 °R, 230psi. It exhausts to a nozzle at 35 psi, which in turn exhausts to the atmosphere at 7.5 psi. Find the nozzle inlet temperature and the nozzle exit velocity. Assume air-standard analysis, internally reversible processes and negligible kinetic energy out of the turbine.
A turboprop engine consist of a diffuser, compresser, combaster, turbine and nozzle. the turbine druves a propeller as well as the compressor. air enters the diffuser with a volumetric flow rate of 83.7m3 /s at 40KPa, 240K and a velocity of 180m/s, and decelerate essentially to zero velocity.the compressor ratio is 10 and the compressor has an isentropic efficiency is 85%.the tuebine inlet temperature id 1140K, and it's isentropic efficiency is 85%. the turbine exit pressure is 50kPa. flow through the diffuser and the nozzle is isentropic. sketch the process on the T-s diagram and using an air standard analysis, determine i. the power delivered to the propeller, in MW ii. the velocity at the nozzle exit, in m/s
An adiabatic, SSSF, single inflow/outflow nozzle has negligible kinetic energy on the inflow, and Ti= 400K (inflow). The actual outflow temp is Te = 368.875502 K. Find the actual flow speed, Ve in m/s at the nozzle exit. Constant specific heats are required Cp0=1.004 kJ/(K*kg) and k =1.4. Then find the isentropic efficiency of the nozzle if the pressure ratio Pe/Pi = 0.7339654867 across the nozzle.
Butane enters an adiabatic compressor at 20psia and 250F with a volume Clow rate of 12ft3/s and leaves at a pressure of 130psia. The power output of the turbine is 55hp. Find a) mass flow rate of butane, b) the exit temperature.
At P = 22 kPa, 0.9 quality steam (H = 2377 kJ/kg) enters a condenser. All of it condenses and the pressure remains 22 kPa. What is the specific enthalpy of the outlet stream?
A net of 2500 kW is needed from a gas turbine engine. Air enters the compressor section at 13.005kPag, 315K. The turbine sections receive the hot gas at 1905 K. Draw the (a) P-V and T-S diagrams. Find (b) air flowand, (c) thermal efficiency. (d) For the maximum work, what should be the temperature of the air leaving thecompressor. Consider rp = 11, k = 1.35 and R = 260.078 J/kgm-K.

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS