An ideal Diesel cycle has a maximum cycle temperature of 2000°C. The state of the air at the beginning of the compression is P =95 kPa and T₁-15°C. This cycle is executed in a four-stroke, eight-cylinder engine with a cylinder bore of 10 cm and a piston strokeof 12 cm. The minimum volume enclosed in the cylinder is 5 percent of the maximum cylinder volume. Determine the powerproduced by this engine when it is operated at 1400 rpm. Use constant specific heats at room temperature. The properties of air atroom temperature are cp=1.005 kJ/kg-K, cy=0.718 kJ/kg-K, R= 0.287 kJ/kg-K, and k=1.4.The power produced by this engine is 603 KTV.2W3E4RT< Prev9 of 10F6Y&7Next >UFBF90

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Answered: An ideal Diesel cycle has a maximum…

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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A four-cylinder, two-stroke 2.4-L diesel engine that operates on an ideal Diesel cycle has a compression ratio of 22 and a cutoff ratio of 1.8. Air is at 70°C and 97 kPa at the beginning of the compression process. Using the cold-airstandard assumptions, determine how much power the engine will deliver at 4250 rpm.
An ideal diesel engine has a compression ratio of 20 and uses air as the working fluid. The state of air at the beginning of the compression process is 95 kPa and 20°C. If the maximum temperature in the cycle is not to exceed 2200 K, determine the net work of the system as a function of compression ratio, r.
3. An air-standard Otto cycle operates with a compression ratio of 8 and a maximum temperature per cycle of 1400 K. If the temperature and pressure at the beginning of compression stroke are 300 K and 100 kPa respectively, determine the following assuming air to be an ideal gas with constant specific heats Cp = 1.005 kJ/kg K and Cv = 0.718 kJ/kg K: (a) The heat supplied (b) The work produced (c) The thermal efficiency.
An ideal diesel cycle powered by air has a compression ratio of 20. At the beginning of the compression process, the pressure of the air is 100 kPa, the temperature is 20°C, and it is desired that the highest temperature of the cycle should not exceed 2250 K. Show the cycle in the P-v diagram. Assume the specific heats are constant at room temperature. k=1.4 CP=1.005kJ/kgK CV=0.718 kJ/kgK R=0.287kJ/kgK a) Calculate the heat entering and leaving the cycle, the thermal efficiency of the cycle, b) Calculate the average effective pressure of the cycle.
A four-cylinder two-stroke 1.8-L diesel engine that operates on an ideal Diesel cycle has a compression ratio of 20 and a cutoff ratio of 1.7. Air is at 70°C and 97 kPa at the beginning of the compression process. Using the cold-air standard assumptions, determine how much power the engine will deliver at 2300 rpm and Plot the net work output, mean effective pressure, and thermal efficiency as a function of thecompression ratio.
A simple Bravton cycle operates between the pressure limits of 100 and 2000 kPa. The working fluid is air which enters the compressor at 40 "C at a rate of 4 kg/s and enters the turbine at 1400 °C. The compressor is ideal (i.e., n= 100%) and the turbine has an isentropic efficiency of n= 90%. For this problem, assume that air is an ideal gas with constant specific heats (R= 0.287 kJ/kg-K, C, = 1.005 kJ/kg-K, C, = 0.718 kJ/kg-K, k= 1.4). %3D (a) Determine the net work output, in kW. (b) Determine the thermal efficiency of the cycle. Heat exchanger Compressor Turbine Heat exchanger Jout
An ideal gas turbine cycle consisting of 2 stages of compression and 2 stages of expansion has an overall pressure ratio of 9. Air enters the compressors at the temperature of 320 K while, being intercooled between the stages. Air enters the first compressor at 100 kPa and the pressure ratio of cach of the compressors are selected in a way that minimizes the total power input for the compressors. The high-pressure turbine (First one) drives the compressors and the low-pressure one produces power output. The compressors and both the high-pressure and low-pressure turbines can be assumed ideal. To increase the efficiency of the cycle a regenerator with effectiveness of 85% is used to recover some heat from the exhaust of the second turbine. In this cycle, air with the temperature of 1400 K enters the first turbine. After expansion in the first turbine, air is reheated to the same temperature at the inlet of the first turbine (1400 K). You can consider constant specific heats of c,=1.005…

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