a) Explanation Write the expression to calculate the entropy change during the process 3-4. s 4 − s 3 = − − q o u t , 34 T 0 (I) s 4 − s 3 = c p ln T 4 T 3 − R ln P 4 P 3 Here, in process 3-4 temperature T 4 and T 3 are equal. s 4 − s 3 = c p ln T 4 T 3 ↵ 0 − R ln P 4 P 3 = − R ln P 4 P 3 (II) Here, heat output during the process 3-4 is q o u t , 34 , surrounding temperature is T 0 , temperature at state 4 is T 4 , temperature at state 3 is T 3 , pressure at state 3 is P 3 , pressure at state 4 is P 4 , gas constant is R and the specific heat of air at constant pressure is c p . Conclusion: Substitute 150 kJ / kg for q o u t and 27 ° C for T L in Equation (I) b) To determine The net work output per unit mass of air. c) To determine The thermal efficiency of the cycle

8th Edition

ISBN: 9780073398174

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

Publisher: McGraw-Hill Education

See similar textbooks

Question

Chapter 9.12, Problem 71P

To determine

The maximum pressure in the cycle.

To determine

The net work output per unit mass of air.

To determine

The thermal efficiency of the cycle

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 9.12, Problem 70P

Chapter 9.12, Problem 72P

Students have asked these similar questions

Q6] (20 Marks) Select the most suitable choice for the following statements: modo digi -1A 10 af5 1 -The copper-based alloy which is responded to age hardening is a) copper-nickel b) aluminum bronze c) copper - beryllium d) brass besincaluy 2- Highly elastic polymers may experience elongations to greater than.... b) 500% bromsia-P c) 1000%. d) 1200% 15m or -2 a)100% 3- The cooling rate of quenching the steel in saltwater will be ......the cooling rate of quenching ir c) faster than sold) none of them a) slower than 4- Adding of a) Cr b) the same as ...... Will lead to stabilize the b) Mo 10 austenite in steel. c) Nimble avolls 1d) Sized loloin nl 5- The adjacent linear chains of crosslinked polymers are joined one to another at various positic DIR... by.........bonds c) covalent noisqo gd) ionic lg 120M 6- For the ceramic with coordination number 6 the cation to anion radius ratio will be a) Van der Waals a) 0.155-0.225 a) linear b) hydrogen (b) 0.225-0.414 c) 0.414 0.732 ..polymers.…

Examine Notes: Attempt Six Questions Only. rever necessa , Q1] (20 Marks) Answer with true (T) or false (F), corrects the wrong phrases, and gives sho reasons for correct and corrected statements: 1- High chromium irons are basically grey cast irons alloyed with 12 to 30 % Cr. yous board-19qgo orT-1 2- The drawbacks of Al- Li alloys are their high young modulus and high density.&M 0) (0 3- Vulcanized rubbers are classified under thermoplastic polymers. 4- Diamond is a stable carbon polymorph at room temperature and atmospheric pressure. ( 5- The metallic ions of ceramic are called anions, and they are positively charged. yldgiH-S 69001(6

H.W 5.4 Calculate the load that will make point A move to the left by 6mm, E-228GPa. The diameters of the rods are as shown in fig. below. 2P- PA 50mm B 200mm 2P 0.9m 1.3m

Chapter 9 Solutions

Thermodynamics: An Engineering Approach

Ch. 9.12 - What are the air-standard assumptions?Ch. 9.12 - What is the difference between air-standard...Ch. 9.12 - How does the thermal efficiency of an ideal cycle,...Ch. 9.12 - What does the area enclosed by the cycle represent...Ch. 9.12 - Prob. 5P Ch. 9.12 - Prob. 6P Ch. 9.12 - Can the mean effective pressure of an automobile...Ch. 9.12 - Prob. 8P Ch. 9.12 - What is the difference between spark-ignition and...Ch. 9.12 - Prob. 10P

Knowledge Booster