Air at a temperature of 195oC and a pressure of 500 kPa enters a smooth insulated nozzle with an inlet diameter of 200 mm. The speed at the inlet is 100 m/s. The air exits the nozzle at 85 kPa through an outlet with a diameter of 140 mm. i. State the assumptions that can be made when analysing this system and write down a simplified version of the first law that applies. ii. Determine the mass flow rate for the air and hence determine an expression for the temperature of the air at the outlet in terms of the speed at the outlet. iii. Determine the speed and temperature at the outlet given that ?? = 1005 ?/???.
Air at a temperature of 195oC and a pressure of 500 kPa enters a smooth insulated nozzle with an inlet diameter of 200 mm. The speed at the inlet is 100 m/s. The air exits the nozzle at 85 kPa through an outlet with a diameter of 140 mm. i. State the assumptions that can be made when analysing this system and write down a simplified version of the first law that applies. ii. Determine the mass flow rate for the air and hence determine an expression for the temperature of the air at the outlet in terms of the speed at the outlet. iii. Determine the speed and temperature at the outlet given that ?? = 1005 ?/???.
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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Air at a temperature of 195oC and a pressure of 500 kPa enters a smooth insulated nozzle with an inlet diameter of 200 mm. The speed at the inlet is 100 m/s. The air exits the nozzle at 85 kPa through an outlet with a diameter of 140 mm.
i. State the assumptions that can be made when analysing this system and write down a simplified version of the first law that applies.
ii. Determine the mass flow rate for the air and hence determine an expression for the temperature of the air at the outlet in terms of the speed at the outlet.
iii. Determine the speed and temperature at the outlet given that ?? = 1005 ?/???.
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