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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Chapter 9.12, Problem 47P

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 46P

Chapter 9.12, Problem 48P

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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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Chapter 9 Solutions