***Show your correct and complete solution neatly. Thank you! ***A four-cylinder compression-ignition engine with a compression ratio of 18 has pistonswith a bore of 9 cm and a stroke of 10 cm. The air pressure at the beginning ofcompression is 98 kPaa, and the temperature is 37 °C. The engine may be modeled bythe air-standard Diesel cycle. The maximum cycle temperature is 1700 °K. If the engineproduces 75 kW of power, determine:a) the heat supplied per cylinderb) the thermal efficiencyc) the rpm required.

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Answered: A four-cylinder compression-ignition…

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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1. a. In a diesel cycle the temperature at the beginning of compression is 870C. If r = 14, find the temperature at the end of the compression. (T2 = 761.550C) b. If the temperature at the beginning and end of the expansion are 17950C and 6770C, respectively, what is the thermal efficiency of the cycle? Assume γ = 1.40. (ηth = 59.26%) 2. An air standard diesel cycle has a compression ratio of 16. The pressure at the beginning of the compression stroke is 1 atm and the temperature is 200C. The maximum temperature is 14300C. Determine the thermal efficiency and the mean effective pressure for this cycle. (ηth = 61.79%, MEP = 6.412 atm)
01 Two engines are to operate on Otto and Diesel cycles with the following data: Maximum temperature 1400 K, exhaust temperature 700 K. State of air at the beginning of compression 0.1 MPa, 300 K. Estimate the compression ratios, the maximum pressures, efficiencies, and rate of work outputs (for 1 kg/min of air) of the respective cycles.
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…
Provide complete solution and detailed diagram. The suction temperature of a diesel cycle is 30oC. The compression ratio is 6 and cut-off ratiois 2. The maximum temperature of the cycle is: A. 1392.22oC B. 1119.22oC C. 967.89oC D. 783.23oC
The pressure and temperature at the beginning of compression of a cold air-standard Diesel cycle are 90 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 7.2 MPa and the temperature is 2250 K. Assume constant specific heats evaluated at 300 K. Determine the mean effective pressure, in kPa.
The compression ratio of an air-standard Dual cycle is 14 and the maximum pressure in the cycle is limited to 70 bar. The pressure and temperature of cycle at the beginning of compression process are 1 bar and 300 K. If the total amount of heat added is 20 kJ, calculate the cut-off ratio, rc. Assume : cylinder bore = 250 mm, stroke length = 300 mm, cp = 1.005, cv = 0.718 and γ = 1.4.
6 - In the ideal Diesel cycle, the compression ratio is 20. The initial temperature of the air is 293 K. Given that the specific heats do not change with temperature, which of the following is the temperature at the end of compression? a) 971.1K B) 1161.6K NS) 1069.1K D) 826.7K TO) 774.8K
The pressure and temperature at the beginning of compression of a cold air-standard Diesel cycle are 90 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 7.2 MPa and the temperature is 2050 K. Assume constant specific heats evaluated at 300 K.Determine:(a) the compression ratio.(b) the cutoff ratio.(c) the percent thermal efficiency of the cycle.(d) the mean effective pressure, in kPa.
Given the same compression ratio for both air standard Otto and air standard Diesel cycle, which cycle has higher thermal efficiency? Answer the same question this time for the Otto cycle versus the Brayton cycle
Please answer a and b thank you so much 1. a. In a diesel cycle the temperature at the beginning of compression is 870C. If r = 14, find the temperature at the end of the compression. (T2 = 761.550C) b. If the temperature at the beginning and end of the expansion are 17950C and 6770C, respectively, what is the thermal efficiency of the cycle? Assume γ = 1.40. (ηth = 59.26%)
A four-cylinder, four-stroke internal combustion engine operates at 2800 RPM. The processes within each cylinder are modeled as an air-standard Otto cycle with a pressure of 14.7 lbf/in2, a temperature of 80°F, and a volume of 0.03 ft3 at the beginning of compression. The compression ratio is 11, and maximum pressure in the cycle is 1080 lbf/in2. Use a cold air-standard analysis with k = 1.4. Determine the power developed by the engine, in horsepower, and the mean effective pressure in lbf/in^2.
The compression ratio of an air-standard Dual cycle is 14 and the maximum pressure in the cycle is limited to 70 bar. The pressure and temperature of cycle at the beginning of compression process are 1 bar and 300 K. If the total amount of heat added is 20 kJ, calculate the temperature at point 5. Assume : cylinder bore = 250 mm, stroke length = 300 mm, cp = 1.005, cv = 0.718 and γ = 1.4.

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