Explanation Write the partial derivative of entropy s with respect to pressure P ( ( ∂ s ∂ P ) T ) . ( ∂ s ∂ P ) T = ( s P 2 − s P 1 P 2 − P 1 ) T (I) Here, entropy at final pressure is s P 2 , entropy at initial pressure is s P 1 , initial pressure is P 1 , and final pressure is P 2 . Write the partial derivative of entropy s with respect to pressure P ( ( ∂ s ∂ P ) T ) . ( ∂ v ∂ T ) P = ( v T 2 − v T 1 T 2 − T 1 ) P (II) Here, volume at final temperature is v T 2 , volume at initial temperature is v T 1 , initial temperature is T 1 , and final temperature is T 2 . Conclusion: Refer A-5E, “Saturated water pressure table”, select the entropy of saturated liquid s f at pressure of 300 psi and 250 psi as 1.6270 Btu / lbm ⋅ R and 1.6499 Btu / lbm ⋅ R . Substitute 1.6270 Btu / lbm ⋅ R for s P 2 , 1.6499 Btu / lbm ⋅ R for s P 1 , 300 psi for P 2 and 250 psi for P 1 in Equation (I). ( ∂ s ∂ P ) T = 600 ° F = { ( 1

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ISBN: 9780073398174

Author: Yunus A. Cengel Dr., Michael A. Boles

Publisher: McGraw-Hill Education

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its m…

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Chapter 12.6, Problem 14P

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Check whether the fourth Maxwell equation is satisfied or not.

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Chapter 12.6, Problem 12P

Chapter 12.6, Problem 15P

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Thermodynamics: An Engineering Approach

Ch. 12.6 - What is the difference between partial...Ch. 12.6 - Consider a function z(x, y) and its partial...Ch. 12.6 - Prob. 3P Ch. 12.6 - Conside the function z(x, y), its partial...Ch. 12.6 - Consider air at 350 K and 0.75 m3/kg. Using Eq....Ch. 12.6 - Consider air at 350 K and 0.75 m3/kg. Using Eq....Ch. 12.6 - 12–7 Nitrogen gas at 400 K and 300 kPa behaves as...Ch. 12.6 - Nitrogen gas at 800 R and 50 psia behaves as an...Ch. 12.6 - Prob. 9P Ch. 12.6 - Using the equation of state P(v a) = RT, verify...

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