(a) Explanation Write the expression for ideal gas equation. P 2 v 2 = R T 2 v 2 = R T 2 P 2 Here, the pressure at section (2) is P 2 , specific volume at section (2) is v 2 , temperature at section (2) is T 2 , specific gas constant is R . Write the expression for mass flow rate. A 2 V 2 = m ˙ 2 v 2 (I) Here, area of section (2) is A 2 , velocity of fluid at section (2) is V 2 , mass flow rate at section (2) is m ˙ 2 , specific volume at section (2) is v 2 . Substitute R T 2 / P 2 for v 2 in Equation (I). A 2 V 2 = m ˙ 2 R T 2 P 2 (II) Write the expression for specific gas constant. R = R ′ M (III) Here, universal gas constant is R ′ , molecular weight of the gas is M . Conclusion: Substitute 8314 N ⋅ m / mol ⋅ K for R ′ , 28.97 gm / mol for M in Equation (III). R = 8314 N ⋅ m / kmol ⋅ K 28 (b) To determine The heat transfer rate.

Fundamentals of Engineering Thermodynamics, Binder Ready Version

8th Edition

ISBN: 9781118820445

Author: Michael J. Moran, Howard N. Shapiro, Daisie D. Boettner, Margaret B. Bailey

Publisher: WILEY

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Chapter 4.12, Problem 95P

(a)

To determine

The volumetric flow rate of the air at exit.

(b)

To determine

The heat transfer rate.

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Chapter 4.12, Problem 94P

Chapter 4.12, Problem 96P

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Fundamentals of Engineering Thermodynamics, Binder Ready Version

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