Problem 13.29

Problem 13.29 - Problem 13.29[Difficulty 2 Given...

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Problem 13.29 [Difficulty: 2] Given: Temperature in and mass flow rate from a tank Find: Tank pressure; pressure, temperature and speed at exit Solution: The given or available data is: R = 286.9 J/kg.K k = 1.4 T 0 = 273 K A t = 0.001 m 2 m rate = 2 kg/s Equations and Computations: Because p b = 0 p e = p * Hence the flow is choked! Hence T e = T * From T 0 , and Eq. 12.22b (12.22b) T * = 228 K T e = 228 K -45.5 o C

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Also M e =1 Hence V e = V * = c e From T e and Eq. 12.18 (12.18) c e = 302 m/s Then V e = 302 m/s To find the exit pressure we use the ideal gas equation
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This note was uploaded on 01/20/2012 for the course EGN 3353C taught by Professor Lear during the Fall '07 term at University of Florida.

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Problem 13.29 - Problem 13.29[Difficulty 2 Given...

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