An air-standard Diesel cycle operates with a compression ratio, r = 10:1. If the initialconditions at bdc are 1 bar and 27 °C, and the energy addition is 2000 kJ/kg of air, calculatethe salient points around the cycle, and the thermal efficiency. Show that the efficiencycalculated from the cycle calculation is equal to that from Eqn (3.20). Assume thecompression and expansion are isentropic and K = 1.4. How does this compare with theefficiency of a Carnot cycle between the two temperature limits, and what is the value of ẞ?[45.02%; 89.07%; 3.6453]

Compression ratio (r): 10:1Initial pressure at BDC : 1 barInitial temperature at BDC T1: 27 °C =…

Answered: An air-standard Diesel cycle operates…

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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The Otto cycle should be used to model an engine cycle. Every one of thepresumptions of the ideal Otto cycle should be applied aside from that a polytropicinteraction with n 1.3 will be utilized for the expansion process. The conditionstoward the beginning of pressure is T1 = 333 K, P1 is 90 kPa and the compressionratio is 8. The energy infused into the cycle during the consistent volume process is2000 kJ/kg. Assume constant specific heatsa) Find the expansion work (kJ/kg)b) Find the net heat transfer for the cycle (kJ/kg) diesel
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A four-cylinder compression-ignition engine with a compression ratio of 18 haspistons with 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 oC. The engine may be modeled bythe air-standard Diesel cycle. The maximum cycle temperature is 1700 oK. If the engineproduces 75 kW of power, determine a) the heat supplied per cylinder; b) the thermalefficiency; and c) the rpm required.
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