Chapter 6, Problem 6.23CU

2. The entropy change of an irreversible process can be calculable. A.(True) B.(Fale)

Based on this question, can you explain in words the theory behind the second law of thermodynamics with this question and how it is solved? Thank you

Steam undergoes an adiabatic expansion in a piston-cylinder assembly from 100 bar, 360°C to 1 bar, 160°C. What is the work in kJ per kg of steam for the process? Calculate the amount of entropy produced, in kJ/K per kg of steam. What is the maximum work that could be obtained from the given initial state to the same final pressure? Show both processes on a property labeled sketch of the T-s diagram.

D2

what can happen to the universe as entropy increases?

QUESTION 3 Water vapor enters a valve at 0.7 bar, 360°C and exits at 0.35 bar. If the water vapor undergoes a throttling process (means constant enthalpy & reduce pressure significantly), determine the rate of entropy production within the valve, in kJ/K per kg of water vapor flowing. TTTT Paragraph v 3 (12pt) -三, T Arial Of Mashups - HTML CSS ick Save and Submit to saue and sSuhmit Click Sque All Anguamc to caua ll !!!

Describe the Entropy and Entropy Generation in Daily Life

One-quarter lbmol of oxygen gas (O2) undergoes a process from p1 = 20 lbf/in2, T1 = 500oR to p2 = 150 lbf/in2. For the process W = -500 Btu and Q = -202.5 Btu. Assume the oxygen behaves as an ideal gas.  Determine T2, in oR, and the change in entropy, in Btu/oR.

One-quarter lbmol of oxygen gas (O2) undergoes a process from p1 = 20 lbf/in2, T1 = 500oR to p2 = 150 lbf/in2. For the process W = -500 Btu and Q = -240.0 Btu. Assume the oxygen behaves as an ideal gas. Determine T2, in oR, and the change in entropy, in Btu/oR.