Problem 2 (10 pts)You are asked to analyze an ideal air-standard Diesel cycle. The temperature before and after compression is 300 K and 900 K,respectively, and the cut-off ratio is 2.5. If specific heats vary with temperature, determine the compression ratio, maximumtemperature in the cycle, and the temperature after expansion in K.Bonus (2 pts)Determine the amount of heat added to the cycle in kJ/kg.

The Problem An ideal air-standard Diesel cycle. We're given the temperatures before and after…

Answered: Problem 2 (10 pts) You are asked to…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

The pressure and temperature at the beginning of compression of an air-standard Diesel cycle are 80 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 6821 kPa and the temperature is 1950 K. Step 1 Determine the compression ratio. r = i Save for Later Attempts: 0 of 3 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above. Ston 3
A Closed Brayton Cycle operates with 20kg/s of air. Air at the beginning of compression is at 25 °C. Pressure ratio is 12. Highest temperature in the cycle is 650 °C. SOLVE FOR a.) Determine the Thermal Efficiency of this cycle in (%) b.) Determine the amount of heat rejected in (kJ/s) c.) Determine the Work Net of this cycle. ANSWERS SHOULD BE ROUND OFF IN SIX SIGNIFICANT FIGURES
An ideal diesel cycle powered by air has a compression ratio of 20. At the beginning of the compression process, the pressure of the air is 100 kPa, the temperature is 20 °C and the highest temperature of the cycle must not exceed 2250 K. Show the cycle in the P-v diagram.Then calculate: a) The heat entering and leaving the cycle, the thermal efficiency of the cycle, b) the average effective pressure of the cycle. Assume that specific heat is constant at room temperature constant at temperature. k=1.4 CP=1.005 kJ/kgK CV=0.718 kJ/kgK R=0.287 kJ/kgK
An ideal gas Diesel engine, that has an inlet temperature, pressure and compression ratio of 22 0C and 102 kPa 21:1 respectively. The maximum cycle temperature is 1,276 0C. Take Specific heat at constant pressure and constant volume for air as 1.005 kJ/kg K and 0.717 kJ/kg K respectively. Calculate the specific heat rejected during the cycle to one decimal place and include the correct SI unit.
An air-standard dual cycle has a compression ratio of 8.6 and displacement of Vd= 2.2 L. At the beginning of compression, p1= 95 kPa, and T1 = 290 K. The heat addition is 4.75 kJ, with one quarter added at constant volume and the rest added at constant pressure. Determine: a) each of the unknown temperatures at the various states, in K. b) the net work of the cycle, in kJ. c) the power developed at 3000 cycles per minute, in kW. d) the thermal efficiency. e) the mean effective pressure, in kPa. Step 1 X Your answer is incorrect. Determine each of the unknown temperatures at the various states, in K. T2 = i 685.79 K T3 = i 1268.14 K T4 = i 2531.97 K T5 = i 0.55 K Hint
The state at the beginning of compression of an air-standard Diesel cycle is fixed by p₁ = 100 kPa and T₁ = 310 K. The compression ratio is 18 and the cutoff ratio is 1.9. Determine: (a) the maximum temperature, in K. (b) the pressure at the end of the expansion, in kPa. (c) the net work per unit mass of air, in kJ/kg. (d) the percent thermal efficiency.
An air-standard dual cycle has a compression ratio of 9.1 and displacement of Va= 2.2L.At the beginning of compression, p1= 95 kPa, and T = 290 K. The heat addition is 5 kJ, with one quarter added at constant volume and the rest added at constant pressure. Determine: a) each of the unknown temperatures at the various states, in K. b) the net work of the cycle, in kJ. c) the power developed at 3000 cycles per minute, in kW. d) the thermal efficiency. e) the mean effective pressure, in kPa. Step 1 Your Answer Correct Answer (Used) Determine each of the unknown temperatures at the various states, in K. 684.1 K T3 = K 1217 T4 = 2311 K 1440 K Step 2 X Your answer is incorrect. Determine the net work of the cycle, in kJ. Weycle = I 3.470026652 kJ Hint Save for Later Attempts: 1 of 3 used Submit Answer Step 3 The parts of this question must be completed in order. This part will be available when you complete the part above.
The pressure and temperature at the beginning of compression of an air-standard Diesel cycle are 90 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 6821 kPa and the temperature is 2150 K. Step 1 X Your answer is incorrect. Determine the compression ratio. r = i 9.64 Hint Save for Later Attempts: 1 of 3 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above. Step 3 The parts of this question must be completed in order. This part will be available when you complete the part above. Step 4 The parts of this question must be completed in order. This part will be available when you complete the part above.
Draw and label the P-V and T-S diagrams. In an ideal Brayton cycle, air enters the compressor section at 14.7 psia and 55°F. The pressure ratio is 12. Turbine inlet condition of 1300°F. Determine the following:a. Pressure, specific volume & temperature at each stateb. Compression ratio
At the beginning of compression in the otto engine cycle, P1= 101.35 kPa, T1 = 21 deg.C and Vi = 0.113 m². At the end of the compression process the pressure is 551.58 kPa. If 174.5 kJ/kg are added during the constant volume reversible. Heating process and the values of k and R for air are 1.4 and 0.287 kJ/kg.deg.K respectively. 2. a. Draw the P-V Diagram b. Draw the T-S Diagram c. Find the temperature at the end of compression d. Find the temperature at the beginning of expansion e. Find Heat removed f. Find the compression ratio g. Find the thermal efficiency
The displacement volume of an internal combustion engine is 2.15 liters. The processes within each cylinder of the engine are modeled as an air-standard Diesel cycle with a cutoff ratio of 2.5. The state of the air at the beginning of compression is fixed by p1 = 1.6 bar, T1 = 325 K and V1 = 2.36 liters. If the cycle is executed 2100 times per min, determine:d) the power developed by the engine, in kW,e) and the thermal efficiency.
The displacement volume of an internal combustron engine is 5.6 liters. The processes within each cylinder of the engine are modeled as an air-standard Diesel cycle with a cutoff ratio ß of 2.4. The state of the air at the beginning of compression is fixed by P 95 kPa, T= liters. For air, take specific heat ratio y 1.4, and R 0.287 kJ kg.K. Determine the net work per cycle, in kl. //int find the temperatures at all states and apply Ocycle= Weycle) b. If the net work per cycle is equal to 4.78 kJ. determine the indicated mean effeetive pressure in kPa, Determine the thermal efficiency. d. Determine the power developed by the engine, in kW, if the cycle is executed 1500 times 27°C, and V = 6.0 a. C. per min

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS