please sollve from this way The operating conditions at the beginning of compression in an air-standard Diesel cycleare: P, = 200 kPa, T, = 380 K. The compression ratio is Vi/V2 = 20 and the maximum%3Dtemperature is T3 = 1879.5 K. Neglect kinetic and potential energy variations and considera steady state operation for all processes.(a) Plot the PV diagram.Determine(b) the temperatures T2 & T4, in K (Note: V/Vy=T;/Ty).(c) the thermal efficiency of the Diesel cycle. Analysis:(a) The analysis begins by determining properties at each principal state of the cycle. With T = 300 K, Table A-22 givesu, = 214.07 kJ/kg and v, = 621.2. For the isentropic compression process 1-2%3DV2U2 =621.2%3D34.51%3D%3D18Interpolating in Table A-22, we get T = 898.3 K and h, = 930.98 kJ/kg. With the ideal gas equation of state%3D%3DT VP: = P = (0.1)|= (0.1)898.3(18) 5.39 MPa%3D%3D300The pressure at state 2 can be evaluated altematively using the isentropic relationship, p2 P1(P2/P1).Since Process 2-3 occurs at constant pressure, the ideal gas equation of state gives%3DT3 =TV2Introducing the cutoff ratio, r, = V3/V2T3 = rT, = 2(898.3) = 1796.6 K%3D%3D%3DFrom Table A-22, h = 1999.1 kJ/kg and va = 3.97.For the isentropic expansion process 3–4%3DVAU4 =V V2V2 V3%3D%3D

Diesel engine is based on compression ignition. That is why it has a higher compression ratio than…

The operating conditions at the beginning of compression in an air-standard Diesel cycle are: P, 200 kPa, TI = 380 K. The compression ratio is VI/V2 = 20 and the maximum temperature is T3 = 1879.5 K. Neglect kinetic and potential energy variations and conside a steady state operation for all processes. %3D %3D (a) Plot the PV diagram. Determine (b) the temperatures T2 & T4, in K (Note: V/Vy T:/T). (c) the thermal efficiency of the Diesel cycle.

The operating conditions at the beginning of compression in an air-standard Diesel cycle are: P, 200 kPa, TI = 380 K. The compression ratio is VI/V2 = 20 and the maximum temperature is T3 = 1879.5 K. Neglect kinetic and potential energy variations and conside a steady state operation for all processes. %3D %3D (a) Plot the PV diagram. Determine (b) the temperatures T2 & T4, in K (Note: V/Vy T:/T). (c) the thermal efficiency of the Diesel cycle.

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

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