Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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use perrys chem eng handbook note: this is solution thermodynamics

Derive the formula for the efficiency of dual combustion engine:
fuel injection and
combustion
power stroke
4 adiabatic expansion
2
CR
compression stroke
adiabatic compression
Qut
Pz
intake stroke exhaust stroke
Va
V. Volume
ANS:
Tp Te - 1
1+ Tp Y (Te -1)
7= 1
where:
rp = pressure ratio during the constant volume portion of combution
r= compression ratio = V1/ V2
rc = cut-off ratio = V4/ V3
Pressure
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Transcribed Image Text:Derive the formula for the efficiency of dual combustion engine: fuel injection and combustion power stroke 4 adiabatic expansion 2 CR compression stroke adiabatic compression Qut Pz intake stroke exhaust stroke Va V. Volume ANS: Tp Te - 1 1+ Tp Y (Te -1) 7= 1 where: rp = pressure ratio during the constant volume portion of combution r= compression ratio = V1/ V2 rc = cut-off ratio = V4/ V3 Pressure
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