Comparing the P-V-diagram of the gas processes used in the Otto cycle to the P-V-diagram of a real 4-stroke IC engine, match the following accordingly v 1-2:Isentropic compression v 2-3 Heat supplied at constant volume v 3-4: Isentropic expansion v 4-1: Heat rejected at constant volume A. mechanical propulsion B. transport strole C. timing stroke D. working stroke (3-4) E. compression stoke (2-3) F. Exhaust and intake stroke. G. acceleration H. ignition, combustion (s-3)

Comparing the P-V-diagram of the gas processes used in the Otto cycle to the P-V-diagram of a real 4-stroke IC engine, match the following accordingly v 1-2:Isentropic compression v 2-3 Heat supplied at constant volume v 3-4: Isentropic expansion v 4-1: Heat rejected at constant volume A. mechanical propulsion B. transport strole C. timing stroke D. working stroke (3-4) E. compression stoke (2-3) F. Exhaust and intake stroke. G. acceleration H. ignition, combustion (s-3)

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

please answer everything Consider an ideal air-standard diesel cycle engine, with an inlet temperature of 293-K and a compression ratio of 20. Heat added is 1235-kJ/kg. Find T2, T4, the cut-off ratio(V3/V2), and the efficiency of the cycle. Assume air standard values for R and k. a. The value of T2. (in Kelvin) b. The value of T4. (in Kelvin) c. The cut-off ratio. (V3/V2) d. The efficiency of the cycle. (in %)
THERMODYNAMICS Consider an air-standard Otto cycle with a heat addition of 800 Btu/bm of air, a compression ratio of 7, and a pressure and temperature at the start of the compression process of 13 lbf/in2, 50 F to simulate an actual spark-ignition engine. Determine the maximum pressure and temperature of the cycle, the thermal efficiency of the cycle, and the mean effective pressure assuming the variation of specific heat with the value from table A-19E Show Complete solution on a paper.
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
An Otto cycle engine operates with the cycle shown below. The air in the engine can be considered a perfect gas with k = 1.402, R = 0.28 kJ/kgk and c, = 0.71 kJ/kgK. The engine has the following known states: State 1: p₁ = 1bar, V₁ = 0.5x10-3 m³, T₁ = 300K State 2: T₂ = 725K, rc = 9 State 3: T3 = 2196.1 K Р What is the specific heat transfer from state 3-4? Please enter your answer in kJ/kg Answer:
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.
An air-standard Compression Ignition cycle has a compression ratio of 18.2. Air is at 32000R at the end of the heat addition process. Neglecting the variation of specific heats with temperature,determine the following:a. Cut-off ratiob. Net output work of the cyclec. Heat rejection per unit mass, Btu/lbd. Thermal efficiency of the cycle(%). Compare this efficiency value if the cycle has to run on an airstandard Carnot Cycle.
On the diagram below sketch a basic Rankine cycle with superheating. Assume that there are irrevesibilities in the turbine and pump. Identify the device associate with each process. Make sure to label: the states and include important features, e.g. lines of constant temperature, volume, pressure, entropy, vapor dome, etc.
For a Rankine cycle, increasing maximum temperature while holding all other parameters constant will allow an engineer to make the following statements Group of answer choices Quality at the turbine exit will decrease increasing liquid water content and causing turbine erosion. Quality at the turbine exit will increase and improve turbine durability. Increasing maximum temperature increases the average temperarture at which heat is added and will increase thermal efficiency Increasing maximum tempearture will decrease required mass flow rate for a specified power output.
Hello, this is the problem attached below: 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.
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.
Assume a basic (non-regenerative) ideal Brayton cycle where air modeled as IG with variables specific heat. The gas-turbine engine has the following operational parameters: Inlet Air Temperature:537 R Inlet Air Pressure:14.696 psia Compressor Pressure Ratio (rp):6.0 Firing Temperature:2400 R Heat Recovery Steam Generator: Assume that the exhaust from the gas turbine engine is directed to a heat recovery steam generator (HRSG)to produce wet steam (i.e. saturated vapor) at a pressure of 600 psia. Liquid water is supplied to the HRSG at 100F and 600 psia. The exhaust gas from the gas-turbine engine leaves the HRSG at the saturation temperature of the wet steam. With these conditions determine: a) the exit temperature of the wet steam (F), b) the intensive steam production rate, lbm-steam/lbm-exhaust gas. Absorption Chiller CHP: Assume the process steam from the HRSG is now used to drive an absorption chiller with COP of 0.7, and that the mechanical power of the gas-turbine engine is used…
I only need help with parts g 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.