(a) Explanation The p − v diagram for the diesel cycle is shown below. Figure-(1) The T − s diagram for the diesel cycle is shown below. Figure-(2) Write the expression for relation between, temperature and compression ratio for process 1-2. T 2 T 1 = ( r c ) γ − 1 (I) Here, the temperature at compressor outlet is T 2 , the compressor inlet is T 1 and the compression ratio is r c . Write the expression for expansion ratio for process 3-4. ε = r c ⋅ T 2 T 3 (II) Here, the compression ratio is r c and temperature at point 2 is T 2 and at point 3 is T 3 . Write the expression for relation between, temperature and expansion ratio for process 3-4. T 4 T 3 = ( 1 ε ) γ − 1 (III) Here, the temperature at the end of expansion process is T 4 , the temperature at the starting of the expansion is T 3 and the expansion ratio is ε . Write the expression for the heat addition in process 2-3. Q 23 = m c p ( T 3 − T 2 ) (IV) Here, the specific heat at constant process is c p and mass of the air is m . Conclusion: Refer to table A-20E “ideal gas Specific Heats of Some Common Gases” to obtain the specific heat of air at constant pressure and at constant volume and at temperature T 1 = 520 ° R as 0.240 Btu / lb ⋅ ° R and 0.171 Btu / lb ⋅ ° R respectively. Substitute 520 ° R for T 1 , 1.4 for γ and 17 for r c in Equation (I). T 2 520 ° R = ( 17 ) 1 (c) To determine The thermal efficiency of the cycle. (c) To determine The cutoff ratio.

Fundamentals of Engineering Thermodynamics

8th Edition

ISBN: 9781118832318

Author: MORAN

Publisher: WILEY

See similar textbooks

Question

Chapter 9.14, Problem 23P

(a)

To determine

The heat addition.

(c)

To determine

The thermal efficiency of the cycle.

(c)

To determine

The cutoff ratio.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 9.14, Problem 22P

Chapter 9.14, Problem 24P

Students have asked these similar questions

A pump delivering 230 lps of water at 30C has a 300-mm diameter suction pipe and a 254-mm diameter discharge pipe as shown in the figure. The suction pipe is 3.5 m long and the discharge pipe is 23 m long, both pipe's materials are cast iron. The water is delivered 16m above the intake water level. Considering head losses in fittings, valves, and major head loss. a) Find the total dynamic head which the pump must supply. b)It the pump mechanical efficiency is 68%, and the motor efficiency is 90%, determine the power rating of the motor in hp.

The tensile 0.2 percent offset yield strength of AISI 1137 cold-drawn steel bars up to 1 inch in diameter from 2 mills and 25 heats is reported as follows: Sy 93 95 101 f 97 99 107 109 111 19 25 38 17 12 10 5 4 103 105 4 2 where Sy is the class midpoint in kpsi and fis the number in each class. Presuming the distribution is normal, determine the yield strength exceeded by 99.0% of the population. The yield strength exceeded by 99.0% of the population is kpsi.

Solve this problem and show all of the work

Chapter 9 Solutions

Fundamentals of Engineering Thermodynamics

Ch. 9.14 - Prob. 1E Ch. 9.14 - Prob. 2E Ch. 9.14 - Prob. 3E Ch. 9.14 - Prob. 4E Ch. 9.14 - Prob. 5E Ch. 9.14 - 6. What is the purpose of a rear diffuser on a...Ch. 9.14 - 7. What is the meaning of the octane rating that...Ch. 9.14 - Prob. 8E Ch. 9.14 - Prob. 9E Ch. 9.14 - 10. What is the purpose of the gas turbine–powered...

Knowledge Booster