Answered: combustion takes place at constant…

combustion takes place at constant volume without any heat loss, calculate the temperature and pressure at the end of combustion. The lower calorific value of CgH18 is 42286 kJ/kg.

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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Question

In a spark ignition engine C8H18 is used fuel. Air coefficient under full load operation
is 1.1. Pressure and temperature of air at the start of ignition are 20 bar and 400°C. If
combustion takes place at constant volume without any heat loss, calculate the temperature
pressure at the end of combustion. The lower calorific value of C3H18 is 42286 kJ/kg.
Values of heat capacity at constant pressure for gases are
and
Gas
CO2
H2O
O2
N2
Cp (kJ/kg)
0.8624
1.96
0.908
1.029

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