PLEASE ANSWER ALL OF THIS QUESTION ASAP!!! OTTO CYCLE3. A spark ignition engine operates on an Otto Cycle with a compression ratio of 9 andtemperature limits of 30°C and 1000°C. If the power output of the cycle is 500 kW,calculate (a) the thermal efficiency and (b) the mass flux of air. Determine also the meaneffective pressure, in bar, if the air intake pressure is 101 kPa.

Given:- A spark ignition engine operating on Otto Cycle Compression ratio (r) = 9 Minimum…

Answered: OTTO CYCLE 3. A spark ignition engine…

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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An air-standard Spark Ignition cycle has a compression ratio of 10.2. Air is at 3000°R at the end of the heat addition process. Neglecting the variation of specific heats with temperature, determine the following:a. Net output work of the cycleb. Heat rejection per unit mass, Btu/lbc. Thermal efficiency of the cycle(%). Compare this efficiency value if the cycle has to run on an air standard Carnot Cycle.
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
In a gas turbine cycle. the pressure ratio is 6 and maximum cycle temperature is 650°C. The efficiencies of turbine and compressor are 0.85 and 0.82. Air enters the compressor at 15°C and flow rate of air is 12 kg/sec. For compression process. C = 1.005 kJ/kg-K. y 1.32. For combustion process, C= 1.11 kJ/kg-K. Determine, (a) Power developed (b) Thermal efficiency (c) Work ratio.
An air-standard Compression Ignition cycle has a compression ratio of 18.2. Air is at 3200°R at the end of the heat addition process. Neglecting the variation of specific heats with temperature, determine the following: a. Cut-off ratio b. Net output work of the cycle c. Heat rejection per unit mass, Btu/lb d. Thermal efficiency of the cycle(%). Compare this efficiency value if the cycle has to run on an air standard Carnot Cycle.
A spark ignition engine that operates on Otto cycle has a compression ratio of 10. At the beginning of the compression process, air is at 100 kPa and 25 C. 750 kJ/kg of heat is transferred to air duringthe constant-volume heat-addition process. Consider the variation of specific heats with temperature. 1)Describe with the aid of diagrams the operational sequence of four stroke spark ignition engines 2)Explain the mechanical efficiency for ideal otto cycle of two and four stroke engines
A compression ignition engine having an initial condition of 15psia and 75°F and a specific volume of 13.2 ft3/lbm. 352 btu/lbm is added per cycle. Using a compression ratio of 15. Calculate (in %) the thermal efficiency of the cycle.
3. The compression ratio of an Otto cycle is 9.32 with a T1 and T3 of 328 K and 1,123 K, respectively. Solve for the efficiency, T2 and T4, clearance volume, and the power if it has a mass flow rate of 2.3 kg/sec.
Consider an air-standard Otto cycle. At the beginning of the compression process, the pressure and temperature are 100 kPa and 300 K. The displacement volume is 2 liters, compression ratio is 10 and the pressure at the end of the combustion is 4 times the pressure at the end of the compression.Use cold-air standard calculations and determine the net work per cycle, in kJ and the thermal efficiency of the cycle
1. In an air standard Otto Cycle, air enters at 104.7 kPa and 27°C. The compression ratio is 7:1. If the network of the cycle is 120 kJ/kg. Calculate the heat supplied in kJ/kg.
An ideal gas Diesel engine, that has an inlet temperature and pressure of 19 0C and 102 kPa respectively with a compression ratio of 23:1. The maximum cycle temperature is 1,237 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 received to one decimal place and include the correct SI unit.
An iseal Brayton cycle has a pressure ratio of 6:1. The temperature of the air is 22 degrees celsius at the inlet to the compressor and 1080 derees celsius at the inlet to the turbine. Take specific heat at constant pressure and constant volume for air as 1,006 KJ/kg K and 0,717 KJ/kg K respectively. Calculate: 1. the compresion absolute temperature to one decimal place 2. the work ratio of the plant to three decimal places 3. the specific work output to the turbine and specific work input to the compressor , to one decimal place and SI unit 4. the thermal efficiency of the plant to one decimal place
6. An ideal Otto cycle using air has the following conditions. At point 1; p = 14.5 psia and 80° F. The heat added to the air is 370 BTU per cycle. If the maximum lbm temperature is 3,400 °R and K = 1.4, Compute the pressure, temperature and volume at each corner of the cycle; the compression ratio, mean effective BTU pressure and the cycle thermal efficiency if c, 0.172- lbm-°R %3D

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