A Diesel engine operates on the air-standard cycle and has a displacement of 3.5 liters. The engine’s compression ratio is 19, and the cutoff ratio is 2.4. The conditions at the beginning of compression are 37 oC, 98 kPaa, and 3.7 liters. If the engine operates at 1500 rpm, determine a) the compression ratio; b) the cycle work; and c) the powered developed.

A Diesel engine operates on the air-standard cycle and has a displacement of 3.5 liters. The engine’s compression ratio is 19, and the cutoff ratio is 2.4. The conditions at the beginning of compression are 37 oC, 98 kPaa, and 3.7 liters. If the engine operates at 1500 rpm, determine a) the compression ratio; b) the cycle work; and c) the powered developed.

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 Fifth Question: A six-cylinder, 4-stroke petrol engine develops 62 H.P at 3000 r.p.m. The volumetric efficiency at N.T.P. is 85%. The bore is equal to the stroke and thermal efficiency of 25 % may be assumed. Calorific value of petrol is 44100 kj/kg. Air-fuel ratio is to be 15:1. Calculate the cylinder bore and stroke.
If the compression ratio and the cut-off ratio in a diesel engine are 15 and 3 respectively, what is the expansion ratio?
An air-standard dual cycle has a compression ratio of 9.1 and displacement of Va = 2.2L. At the beginning of compression, Pi = 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 state, in K. b) the net work of the cycle, in kl. c) the power developed at 3000 cycles per minute, in kW. d) the thermal efficiency. e) the mean effective pressure, in kPa.
I only need help with parts f to i. At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Vd = 2.1 L. Determine per cylinder: a)    the volume at state 1.b)    the air mass per cycle.c)    the heat addition per cycle, in kJ.d)    the heat rejection per cycle, in kJ.e)    the net work per cycle, in kJ.f)     the thermal efficiency in %.g)    the mean effective pressure, in bar.h)    Develop a full exergy accounting per cycle, in kJ. Let T0 = 300 K, p0 = 1 bar.i)    Devise and evaluate the exergetic efficiency for the cycle.
I only need help with parts f to i. At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Vd = 2.1 L. Determine per cylinder: a)    the volume at state 1.b)    the air mass per cycle.c)    the heat addition per cycle, in kJ.d)    the heat rejection per cycle, in kJ.e)    the net work per cycle, in kJ.f)     the thermal efficiency.g)    the mean effective pressure, in bar.h)    Develop a full exergy accounting per cycle, in kJ. Let T0 = 300 K, p0 = 1 bar.i)    Devise and evaluate the exergetic efficiency for the cycle.
I only need help with parts d to i. At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Vd = 2.1 L. Determine per cylinder: a)    the volume at state 1.b)    the air mass per cycle.c)    the heat addition per cycle, in kJ.d)    the heat rejection per cycle, in kJ.e)    the net work per cycle, in kJ.f)     the thermal efficiency.g)    the mean effective pressure, in bar.h)    Develop a full exergy accounting per cycle, in kJ. Let T0 = 300 K, p0 = 1 bar.i)    Devise and evaluate the exergetic efficiency for the cycle.
7:09 PM O FINAL EXAMINATION IN ME 324 2 of 10 48:02 / 03:00:00 The conditions at the start of compression in an air-standard Otto cycle engine are 103 kPa pressure and 26 C. The compression ratio is 8 to 1 and the Tmep =1,200 kPa. Find the heat added to the cycle. kJ 1,400 kg air 1,450 kg air k] O 1,549 kg air kj 1,659 kg air Next II
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.
I only need help with parts h and i. At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Vd = 2.1 L. Determine per cylinder: a) the volume at state 1.b) the air mass per cycle.c) the heat addition per cycle, in kJ.d) the heat rejection per cycle, in kJ.e) the net work per cycle, in kJ.f) the thermal efficiency in %.g) the mean effective pressure, in bar.h) Develop a full exergy accounting per cycle, in kJ. Let T0 = 300 K, p0 = 1 bar (See image below).i) Devise and evaluate the exergetic efficiency for the cycle. part h
An air-standard dual cycle has a compression ratio of 9.1 and displacement of Va = 2.2L. At the beginning of compression, p, = 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 state, 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. Abc part only'|
1. An ideal air-standard diesel cycle with inlet conditions: 21.11˚C and 14.7 psia, 700 Btu/lbm heat input, and a compression ratio of 15. Find P2, T2, T3, V3, P4, T4, and the efficiency of the cycle. Take Note: Assume air standard values for R and k Cp = kR/k-1 Cv = R/k-1 a. Find the value of P2. (in psi or lb/in^2) b. Find the value of T2. (in Rankine) c. Find the value of T3. (in Rankine) d. Find the value of V3. (in ft^3/lbm) e. Find the value of P4. (in psi or lb/in^2) f. Find the value of T4. (in Rankine) g. Find the value of efficiency of the cycle. (ex. 100-%)
At the beginning of the compression process of air-standard Diesel cycle operating with a compression ratio of 18, the temperature is 300 K and the pressure is 0.1 MPa. The cut-off ratio for the cycle is 2 and the mass flow rate in the system is 1900 kg/hr. Cp= 1.006 kJ/kg K Cv= 0.717 kJ/kg K 1) which figure represents the diagram for the process 2) which formula should be used to determine the temperature after compression? 3) calculate the temperature after isentropic compression in the presentable unit 4)which formula should be used to determine the temperature after heating? 5) calculate the temperature after isentropic compression in the presentable unit? 6) calculate the temperature after isentropic expansion in the presentable unit? 7) calculate the pressure after compression in kPa ? 8) which formula should be used to determine the work output of the engine? 9) calculate the work output of the engine kW? 10) calculate the thermal efficiency of the cycle in %? 11) which…