Q2: An engine with a compression ratio of 13:1 draws in air at a temperature of 20 °C and pressure of 1 bar and operates with air-fuel ratio of 20:1. (a) Select the suitable ideal air cycle to represent operation of this engine and draw its p-V and T-s diagrams. Note: You have to justify your selection. (b)Estimate the temperature and pressure at the end of the compression stroke. (c) If the calorific value of the fuel is 44 MJ/kg, estimate the temperature and pressure immediately after combustion. (d)Determine the work done per cycle; mean effective pressure and thermal efficiency of the engine based on the air-standard analysis of the selected cycle. Assume: Cp =1.005 kJ/kg.K and C, = 0.717 kJ/kg.K. %3D

Q2: An engine with a compression ratio of 13:1 draws in air at a temperature of 20 °C and pressure of 1 bar and operates with air-fuel ratio of 20:1. (a) Select the suitable ideal air cycle to represent operation of this engine and draw its p-V and T-s diagrams. Note: You have to justify your selection. (b)Estimate the temperature and pressure at the end of the compression stroke. (c) If the calorific value of the fuel is 44 MJ/kg, estimate the temperature and pressure immediately after combustion. (d)Determine the work done per cycle; mean effective pressure and thermal efficiency of the engine based on the air-standard analysis of the selected cycle. Assume: Cp =1.005 kJ/kg.K and C, = 0.717 kJ/kg.K. %3D

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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