(1) A four-cylinder engine has a compression ratio of 8, and cach cylinder has a maximum volume of 0.6 L. At the beginning of the compression process, the air is at 98 kPa and 17°C, and the maximum temperature in the cycle is 1800 K., determine (a) the amount of heat supplied per cylinder. (b) the thermal efficiency, and (c) the number of revolutions per minute required for a net power output of 60 kW. Study the effect of varying the compression ratio from 5 to 11 on the network done and the efficiency of the cycle. Plot the P-v and T-s diagrams for the cycle, and discuss the results.

(1) A four-cylinder engine has a compression ratio of 8, and cach cylinder has a maximum volume of 0.6 L. At the beginning of the compression process, the air is at 98 kPa and 17°C, and the maximum temperature in the cycle is 1800 K., determine (a) the amount of heat supplied per cylinder. (b) the thermal efficiency, and (c) the number of revolutions per minute required for a net power output of 60 kW. Study the effect of varying the compression ratio from 5 to 11 on the network done and the efficiency of the cycle. Plot the P-v and T-s diagrams for the cycle, and discuss the results.

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

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 stroke of 12 cm. The minimum volume enclosed in the cylinder is 5 percent of the maximum cylinder volume. Determine the power produced by this engine when it is operated at 1400 rpm. Use constant specific heats at room temperature. The properties of air at room 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. 2 W 3 E 4 R T U FB F9 0
1. A six-cylinder, four stroke, 3.2-L compression ignition engine operate on the diesel cycle with a compression ratio of 19. The air is at 95 kPa and 67°C at the beginning of the compression process and the engine speed is 1750 rpm. The engine uses light diesel fuel with heating value of 42,500 kJ/kg, an air-fuel ratio of 28 and a combustion efficiency of 98%. Using the constant specific heats at 850K determine the following: a) Maximum temperature b) Work net, Wnet c) Net Power output (kW) d) Specific fuel consumption in g/kWh, defined as the ratio of the mass of the fuel consumed to the net work output produced. *Constant specific heats at 850K: k=1.349, cp=1.110 kJ/kg-K, cv=0.823 kJ/kg-K, R=0.287 kJ/kg-K
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. Use nitrogen as the working fluid which is at 70°C and 97 kPa at the beginning of the compression process. Determine how much power the engine will deliver at 4500 rpm. The properties of nitrogen at room temperature are cp=1.039 kJ/kg-K, cy= 0.743 kJ/kg-K, R= 0.2968 kJ/kg-K, and k=1.4. The power the engine will deliver is kW
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.
The engine has four cylinders with a total capacity of 2200 cc. Assuming a cut-off ratio of 1.8 and using the cold-air-standard assumptions, determine how much power the engine will deliver at 3500 rpm. An ideal two-stroke diesel engine has a compression ratio of 21 and uses air as the working fluid. The state of air at the beginning of the compression process is 70°C and 97 kPa. P, Isentropic qout Isentropic
2- An ideal Diesel cycle has a compression ratio of 15 and a cutoff ratio of 1.7. Determine the maximum air temperature and the rate of heat addition to this cycle when it produces 250 hp of power; the cycle is repeated 1300 times per minute; and the state of the air at the beginning of the compression is 100 kPa and 20°C. Use constant specific heats at room temperature.
Answer the question.
An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 103 kPa and 27°C, and 1850 kJ/kg of heat is transferred to air during the constant-volume heat-addition process. Accounting for the variation of specific heats of air with temperature, determine (a) The maximum temperature and pressure that occur during the cycle (b) The net work output (c) The thermal efficiency
An ideal Otto cycle has a compression ratio of 8. At the beginning of the Compression process, air is at 100 kPa and 17°C, and 800 kJ/kg of heat is Transferred to air during the constant-volume heat-addition process. (a) the maximum temperature and pressure that occur during the cycle, (b) The net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. P. kPa Isentropic 4 in Isentropic 100 Jour V₁ = V₁
An engine working on the Otto cycle has 1 kg of air entering at 315 K and a volume of 0.6 m³ at the beginning of compression cycle. At the end of compression cycle, the volume is 0.05 m³. If the maximum temperature of the cycle is 1,163 K, compute the Mean Effective Pressure (in kPa). Let k = 1.4, = 0.718 kJ/kg-K. Cv=0.718 kj/kg-k
A 4 cylinder Otto cycle engine has a compression ratio of 8. Inlet air is at 100 kPa and 17°C, and 800 kJ/kg of heat is transferred to the engine. Determine (a) the maximum temperature and pressure that occur during the cycle, (b) the net work output, (c) the exhaust gas temperature (d ) the mean effective pressure for the cycle.