QUESTION FOUR: A four-cylinder turbo-charged diesel engine has a compression ratio of 22:1. At the start of the compression stroke cylinder No. I contains 0.25kg of air at a pressure of 100kN/m² and a temperature of 65°C. The air is then compressed according to the law P1.32 = c, a constant. The mass of the fuel injected amounts to '/soth of the mass of air in the cylinder. If combustion occurs under conditions of constant pressure and the calorific value of the fuel used is 44.5MJ/kg, determine: (a) The temperature after compression, (b) The work done on the air during compression, and (c) The temperature after combustion. Given: Q=mfuel x Ho [Take Cp for the mixture as 995J/kg K] Q = m CpAT n-1 n T₂ = T₁ (²²) 7² P₂ = P₁ (1/1²) Cp n Cv 1.32 W₁ = P₁V₁-P₂V₂ n-1 R=Cp-Cv PV= mRT PV = C
QUESTION FOUR: A four-cylinder turbo-charged diesel engine has a compression ratio of 22:1. At the start of the compression stroke cylinder No. I contains 0.25kg of air at a pressure of 100kN/m² and a temperature of 65°C. The air is then compressed according to the law P1.32 = c, a constant. The mass of the fuel injected amounts to '/soth of the mass of air in the cylinder. If combustion occurs under conditions of constant pressure and the calorific value of the fuel used is 44.5MJ/kg, determine: (a) The temperature after compression, (b) The work done on the air during compression, and (c) The temperature after combustion. Given: Q=mfuel x Ho [Take Cp for the mixture as 995J/kg K] Q = m CpAT n-1 n T₂ = T₁ (²²) 7² P₂ = P₁ (1/1²) Cp n Cv 1.32 W₁ = P₁V₁-P₂V₂ n-1 R=Cp-Cv PV= mRT PV = C
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
QUESTION FOUR
Kindly answer correctly. Please sho all the necessary steps
![QUESTION FOUR:
A four-cylinder turbo-charged diesel engine has a compression ratio of 22:1. At the start of
the compression stroke cylinder No. 1 contains 0.25kg of air at a pressure of 100kN/m² and
a temperature of 65°C. The air is then compressed according to the law P1.32 = c, a constant.
The mass of the fuel injected amounts to '/soth of the mass of air in the cylinder. If combustion
occurs under conditions of constant pressure and the calorific value of the fuel used is
44.5MJ/kg, determine:
(a) The temperature after compression,
(b) The work done on the air during compression, and
(c) The temperature after combustion.
Given:
[Take Cp for the mixture as 995J/kg K]
Q = mfuel x Ho
X
Wa
n-1
1.32
n
²2₂ = T₁ (²2²) = P₁₂ = P₁₂ (²2) 1¹-³2 R=Cp-Cv
P1
Cp
Cv
Q = m CpAT n =
P₁V₁-P₂V₂
n-1
R=Cp-Cv PV= mRT
PV
T
||](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fabdd1821-d7b6-4171-a67e-edf70418727b%2F812f59ad-3164-454c-a58f-fcafbee9bc88%2F7a8owlb_processed.png&w=3840&q=75)
Transcribed Image Text:QUESTION FOUR:
A four-cylinder turbo-charged diesel engine has a compression ratio of 22:1. At the start of
the compression stroke cylinder No. 1 contains 0.25kg of air at a pressure of 100kN/m² and
a temperature of 65°C. The air is then compressed according to the law P1.32 = c, a constant.
The mass of the fuel injected amounts to '/soth of the mass of air in the cylinder. If combustion
occurs under conditions of constant pressure and the calorific value of the fuel used is
44.5MJ/kg, determine:
(a) The temperature after compression,
(b) The work done on the air during compression, and
(c) The temperature after combustion.
Given:
[Take Cp for the mixture as 995J/kg K]
Q = mfuel x Ho
X
Wa
n-1
1.32
n
²2₂ = T₁ (²2²) = P₁₂ = P₁₂ (²2) 1¹-³2 R=Cp-Cv
P1
Cp
Cv
Q = m CpAT n =
P₁V₁-P₂V₂
n-1
R=Cp-Cv PV= mRT
PV
T
||
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