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A four-cylinder, four-stroke, 1.8-liter modern, highspeed compression-ignition engine operates on the ideal dual cycle with a compression ratio of 16. The air is at 95 kPa and 708C at the beginning of the compression process and the engine speed is 2200 rpm. Equal amounts of fuel are burned at constant volume and at constant pressure. The maximum allowable pressure in the cycle is 7.5 MPa due to material strength limitations. Using constant specific heats at 1000 K, determine

(a) the maximum temperature in the cycle,

(b) the net work output and the thermal efficiency,

(d) the net power output. Also, determine

(e) the second-law efficiency of the cycle and the rate of energy output with the exhaust gases when they are purged.

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Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M92031378

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