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Air at static temperature of 300 K and static pressure of 140 kPa flow with velocity 60 m/s. a. Evaluate the stagnation temperature and stagnation pressure of air. b. Repeat the calculation if the air speed is 300 m/s under constant specific heats. c. Make a short evaluation comparing the results. Hint: for a, consider air is an ideal gas and it is incompressible fluid for the initial velocity. So, find the stagnation temperature and stagnation pressure using; 1 V? Toi = T1+ 2 Cp P1 Poi = P1 RT, Po1 = P1 +PV? For b, because of the increasing velocity, air is not an incompressible fluid. So, you should consider the compressible fluids under constant specific heats using; /(7-1) Toi () Poi = P1 Specific heat of air is 1004.5 J/kgK and specific heats ratio is 1.4.

Air at static temperature of 300 K and static pressure of 140 kPa flow with velocity 60 m/s. a. Evaluate the stagnation temperature and stagnation pressure of air. b. Repeat the calculation if the air speed is 300 m/s under constant specific heats. c. Make a short evaluation comparing the results. Hint: for a, consider air is an ideal gas and it is incompressible fluid for the initial velocity. So, find the stagnation temperature and stagnation pressure using; 1 V? Toi = T1+ 2 Cp P1 Poi = P1 RT, Po1 = P1 +PV? For b, because of the increasing velocity, air is not an incompressible fluid. So, you should consider the compressible fluids under constant specific heats using; /(7-1) Toi () Poi = P1 Specific heat of air is 1004.5 J/kgK and specific heats ratio is 1.4.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Air at static temperature of 300 K and static pressure of 140 kPa flow with velocity 60 m/s. a. Evaluate the stagnation temperature and stagnation pressure of air. b. Repeat the calculation if the air speed is 300 m/s under constant specific heats. c. Make a short evaluation comparing the results. Hint: for a, consider air is an ideal gas and it is incompressible fluid for the initial velocity. So, find the stagnation temperature and stagnation pressure using; P1 1 V? T1+ 2 Cp %3D Toi RT, Po1 = P1+eV? For b, because of the increasing velocity, air is not an incompressible fluid. So, you should consider the compressible fluids under constant specific heats using; /(-1) Toi Poi = P1 Specific heat of air is 1004.5 J/kgK and specific heats ratio is 1.4. /
Transcribed Image Text:Air at static temperature of 300 K and static pressure of 140 kPa flow with velocity 60 m/s. a. Evaluate the stagnation temperature and stagnation pressure of air. b. Repeat the calculation if the air speed is 300 m/s under constant specific heats. c. Make a short evaluation comparing the results. Hint: for a, consider air is an ideal gas and it is incompressible fluid for the initial velocity. So, find the stagnation temperature and stagnation pressure using; P1 1 V? T1+ 2 Cp %3D Toi RT, Po1 = P1+eV? For b, because of the increasing velocity, air is not an incompressible fluid. So, you should consider the compressible fluids under constant specific heats using; /(-1) Toi Poi = P1 Specific heat of air is 1004.5 J/kgK and specific heats ratio is 1.4. /
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