Air flows through a constant-area, insulated duct. At location 1, the conditions are Maj = 0.4, T; = 60°C, p1 = 200 kPa (abs). Downstream, at location 2, Maz = 0.8. Assume steady flow and ideal gas with constant specific heats. Determine: a. stagnation temperatures, To, and To, [K, °C] b. velocities, Vį and V2 [m/s] c. stagnation pressures, po, and poz kPa] d. entropy change, s2 – s1 [kJ/kg K] e. show static and stagnation states and process on T – s diagram

Air flows through a constant-area, insulated duct. At location 1, the conditions are Maj = 0.4, T; = 60°C, p1 = 200 kPa (abs). Downstream, at location 2, Maz = 0.8. Assume steady flow and ideal gas with constant specific heats. Determine: a. stagnation temperatures, To, and To, [K, °C] b. velocities, Vį and V2 [m/s] c. stagnation pressures, po, and poz kPa] d. entropy change, s2 – s1 [kJ/kg K] e. show static and stagnation states and process on T – s diagram

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

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Question

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Air flows through a constant-area, insulated duct. At location 1, the conditions are Maj = 0.4,
T1 = 60°C, p1 = 200 kPa (abs). Downstream, at location 2, Maz = 0.8. Assume steady flow and ideal
gas with constant specific heats. Determine:
a. stagnation temperatures, To, and Toz [K, °C]
b. velocities, Vị and V2 [m/s]
c. stagnation pressures, po, and poz [kPa]
d. entropy change, s2 – s1 (kJ/kg K]
e. show static and stagnation states and process on T-
- s diagram

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