a) Explanation Draw the given diesel cycle on P − v diagram as in Figure (1). Write the relationship between temperature and specific volume for the isentropic compression process 1-2from Figure (1). T 2 = T 1 ( v 1 v 2 ) k − 1 (I) Here, the temperature at state 1 is T 1 , the temperature at state 2 is T 2 , specific volume at state 1 is v 1 , specific volume at state 2 is v 2 , and the specific heat ratio is k . Write the relationship between the temperature, pressure, and specific volume for the constant pressure heat addition process 2-3. P 3 v 3 T 3 = P 2 v 2 T 2 For process 2-3, P 2 and P 3 are equal. T 3 = v 3 v 2 T 2 (II) Here, the temperature at state 3 is T 3 , specific volume at state 2 is v 2 , specific volume at state 3 is v 3 , pressure at state 3 is P 3 , pressure at state 2 is P 2 , and specific volume at state 3 is v 3 . From the Table A-2 “Ideal2gas specific heats of various common gases” obtain the below properties for air b) To determine The thermal efficiency of the given diesel cycle c) To determine The mean effective pressure for the given diesel cycle

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ISBN: 9781266084584

Author: CENGEL

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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…

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Chapter 9.12, Problem 53P

To determine

The temperature and pressure at the end of the heat addition process

To determine

The thermal efficiency of the given diesel cycle

To determine

The mean effective pressure for the given diesel cycle

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Chapter 9.12, Problem 52P

Chapter 9.12, Problem 54P

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Chapter 9 Solutions

THERMODYNAMICS: ENG APPROACH LOOSELEAF

Ch. 9.12 - What are the air-standard assumptions?Ch. 9.12 - What is the difference between air-standard...Ch. 9.12 - Prob. 3P Ch. 9.12 - How does the thermal efficiency of an ideal cycle,...Ch. 9.12 - How are the combustion and exhaust processes...Ch. 9.12 - What does the area enclosed by the cycle represent...Ch. 9.12 - Prob. 7P Ch. 9.12 - Can the mean effective pressure of an automobile...Ch. 9.12 - What is the difference between spark-ignition and...Ch. 9.12 - Prob. 10P

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The temperature and pressure at the end of the heat addition process

Solution Summary: The author illustrates the relationship between temperature and specific volume for the isentropic compression process 1-2.

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The temperature and pressure at the end of the heat addition process

The thermal efficiency of the given diesel cycle

The mean effective pressure for the given diesel cycle

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