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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5. (a) If the compression ratio of an engine working on Otto cycle isIncreased from 5 to 7, find the percentage increase in thermalefficiency. (b) Derive an expression for thermal efficiency of ideal Brayton cycle.(c) In an engine working on the ideal Otto cycle, the pressure and temperature at the beginning of compression are 100 kPa and 40 °C respectively. The ratio of specific heat capacities is 1.4. If the airstandard efficiency of the engine is 50%, determine(i) The compression ratio. (ii) The pressure and temperature at the end of adiabaticcompression. (6a) Explain and discuss in your own words, the following three concepts incombustion: stoichiometric mixture of air and fuel, weak mixture and richmixture. Explain their importance in combustion applications.(6b) A gas fuel has the following volumetric composition:Propane C3H8: 73 %Butane C4H10: 5 %Ethane, C2H6: 3%Nitrogen N2: 19%(i) Write out the complete combustion equations for all the combustible constituents individually.…
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With a thermal efficiency of 45%, an ideal air-standard Brayton cycle operates at steady state with compressor inlet conditions of 300k and 100kpa and a fixed turbine inlet temperature of 1700k for the cycle. Determine the net power developed by the cycle
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