As shown in (a) P-v diagram and (b) T-s diagram, an ideal diesel engine has a compression ratioof 20 and uses air as the working fluid. The state of air at the beginning of the compressionprocess is P1 = 95 kPa and T1 = 20°C. If the maximum temperature in the cycle is not to exceedT3 = 2200 K, determine (be noted with the formula below):9inFinP = constantIsentropicYoutIsentropicV = constant(a) P-v diagram(b) T-s diagram(a) the temperature T2 after the compression (K).(b) the temperature T4 after the expansion (K). (hint: 3 = V2V2 V4V4(c) the thermal efficiency of the cycle (%).**********************O ideal gas equation of state:Pv = RT, PV = mRT,T2P2V2T1k-12 ideal gas undergoing an isentropic process:%3D3 constant specific heats and gas constant:kJ= 1.005kg · K'kJCy = 0.718-kg · K'kJR = 0.287Cp =k = 1.4,kg · K4 efficiency of diesel engineT4 – T1k(T3 – T2)n = 1–**********************************************

Answered: Image /qna-images/answer/8cbbb3e6-2177-4cbc-8579-8aacfe7ede19.jpg

As shown in (a) P-v diagram and (b) T-s diagram, an ideal diesel engine has a compression ratio of 20 and uses air as the working fluid. The state of air at the beginning of the compression process is P1 = 95 kPa and T1 = 20°C. If the maximum temperature in the cycle is not to exceed T3 = 2200 K, determine (be noted with the formula below): %3! %3D %3D

As shown in (a) P-v diagram and (b) T-s diagram, an ideal diesel engine has a compression ratio of 20 and uses air as the working fluid. The state of air at the beginning of the compression process is P1 = 95 kPa and T1 = 20°C. If the maximum temperature in the cycle is not to exceed T3 = 2200 K, determine (be noted with the formula below): %3! %3D %3D

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 volume ratios of compression and expansion for a diesel engine as measured from an indicator diagram are 16 and 8 respectively. The pressure and temperature at the beginning of the compression are 1 bar and 28°C. Assuming an ideal engine, determine the mean effective pressure, the ratio of maximum pressure to mean effective pressure and cycle efficiency. Also find the fuel consumption per kWh if the indicated thermal efficiency is 0.5 of ideal efficiency, mechanical efficiency is 0.8 and the calorific value of oil 42000 kJ/kg. Assume for air : cp = 1.005 kJ/kg K ; cv = 0.718 kJ/kg K, ã = 1.4. Please also draw the PV diagram.
Please do parts A and B
Consider an ideal Brayton cycle using air as the working fluid, operating with a pressure ratio of 17. Air at 50 kg/s enters the compressor at 150 kPa and 700 K. The air then enters the turbine at 3000 K. Assume gas constant and specific heats at room temperature. Apply the ideal gas equation of state and isentropic relationships of ideal gas appropriately. (а) Analyse all pressures and temperatures in the cycle (b) Using values of Qin, Qout and Wnet in MW, determine the thermal efficiency of the суcle. (c) Illustrate proper P - v and T –s diagrams for the cycle, indicating all pressures and temperatures obtained in (a).
In an air standard diesel cycle, compression starts at 100 kPa and 303 K. The compression ratio is 20 to 1. The maximum cycle temperature is 2,200 K. Determine the thermal efficiency.
An ideal gas Diesel engine, that has an inlet temperature, pressure and compression ratio of 21 °C and 102 kPa 18:1 respectively. The maximum cycle temperature is 1,264 °C. Take Specific heat at constant pressure and constant volume for air as 1.004 kJ/kg K and 0.715 kJ/kg K respectively. Calculate the thermal efficiency of the cycle to one decimal place and include the correct unit (percentage). Add unit symbol.
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 it is desired that the highest temperature of the cycle should not exceed 2250 K. Show the cycle in the P-v diagram. Assume the specific heats are constant at room temperature. k=1.4 CP=1.005kJ/kgK CV=0.718 kJ/kgK R=0.287kJ/kgK a) Calculate the heat entering and leaving the cycle, the thermal efficiency of the cycle, b) Calculate the average effective pressure of the cycle.
Thermodynamics
Determine the T2, T4, and Thermal Efficeincy
The compression ratio of an ideal diesel cycle working with air is 20. At the beginning of the compression process, the pressure of the air is 100kPa, the temperature is 20°C, and the highest temperature of the cycle is required not to exceed 2250K. Show the cycle in the P-v diagram. Consider specific heats constant at room temperature. k=1.4 CP=1.005kJ/kgK CV=0.718 kJ/kgK R=0.287kJ/kgK a) The input and output heats of the loop, the thermal efficiency of the loop,b) Calculate the average effective pressure of the cycle.
With given,find,figure,analysis, and interpretation
In an ideal diesel cycle the pressure and temperature at the beginning of the adiabatic compression are 98.5kN/m^3 and 60°c, respectively.themaximum pressure attained during the cycle is 4.5MN/m^3 and the heat received during the cycle is 580kJ/kg gas.Determine for the cycle a) the volume ratio of compression b) the temperature at the end of compression c) the temperature at the end of heat reception d) the temperature at the end of adiabatic expansion e) the net work done/kg of gas f) the thermal efficiency g) the work ratio h) the mean effective pressure I) the Carnot efficiency within the cycle temperature limits.
4. A Diesel cycle has a temperature at the beginning of the compression is 172.4°F . The temperatures at the isentropic expansion process are 3,263°F and 1,250.6°F, respectively. If the compression ratio is 15 and the pressure at the beginning of the compression is 2,116.8 psf, find the cut-off ratio and the thermal efficiency of the cycle. Assume y = 1.4.