a) Explanation The maximum pressure occur in the start of expansion process ( P 1 ) in Carnot cycle. Write the relation between the pressure and relative pressure. P 1 P 4 = P r 1 P r 4 (I) Here, pressure at state 1 is P 1 , pressure at state 4 is P 4 , relative pressure at state 1 is P r 1 , relative pressure at state 4 is P r 4 . Conclusion: From Table A-17, “ideal gas properties of the air”, the value of relative pressure at state 1 ( P r 1 ) at the temperature of 1200 K ( T 1 ) is 238 b) To determine The heat transferred to the working fluid. c) To determine The mass of the working fluid.

8th Edition

ISBN: 9780073398174

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

Publisher: McGraw-Hill Education

See similar textbooks

Concept explainers

IC engines

The term "engine" indicates a mechanical device/machine used to convert input energy to a specific mechanical output. The input energy may be in the form of chemical energy, thermal energy, or so on and mechanical output is in the form of mechanical ener…

Question

Chapter 9.12, Problem 18P

To determine

The maximum pressure in the given Carnot cycle

To determine

The heat transferred to the working fluid.

To determine

The mass of the working fluid.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 9.12, Problem 17P

Chapter 9.12, Problem 19P

Students have asked these similar questions

1. Use constant specific heats at room temperature in solving the problem. An air-standard cycle with variable specific heats is executed in a closed system with 0.005 kg of air and consists of the following three processes: 1-2 v= constant heat addition from 95 kPa and 18°C to 375 kPa 2-3 Isentropic expansion to 95 kPa 3-1 P = constant heat rejection to initial state (a) Show the cycle on P-v and T-s diagrams. (b) Calculate the net work per cycle, in kJ. (c) Determine the thermal efficiency.

The compression ratio of an air-standard dual cycle is 10:1, it begins at 120 kPa and 300 K, and the total heat intake of the cycle has a value of 275 kJ/kg. If this heat intake at constant volume is three-fifth of the total, determine the following: V1, P2, V2, T2, T3, P3, T4, V4, T5, heat rejected, net work, volume displacement and mean effective pressure.

An air-standard cycle is executed in a closed system and is composed of the following four processes: 1-2 Isentropic compression from 100 kPa and 27°C to 1 MPa 2-3 P = constant heat addition in amount of 2800 kJ/kg 3-4 V = constant heat rejection to 100 kPa P = constant heat rejection to initial state (a) Show the cycle on P-v and T-s diagrams. (b) Calculate the maximum temperature in the cycle. (c) Determine the thermal efficiency. Assume constant specific heats at room temperature.

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

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

The maximum pressure in the given Carnot cycle

Solution Summary: The author explains the maximum pressure in the given Carnot cycle and the relation between the pressure and relative pressure.

Concept explainers

The maximum pressure in the given Carnot cycle

The heat transferred to the working fluid.

The mass of the working fluid.

Want to see the full answer?

Chapter 9 Solutions