An engine operates on an Otto cycle with a compression ratio of 8. At the beginning of the isentropic compression process, the volume, pressure and the temperature of the air are 0.01 m³, 110 kPa, and 50°C, respectively. At the end of the combustion process, the temperature is 900°C. Find (A) the temperature at the remaining two states of the Otto cycle, (B) the pressure of the gas at the end of the combustion process, (C) heat added per unit mass to the engine in the combustion chamber, (D) heat removed per unit mass from the engine to the environment, (E) the compression work per unit mass added, (F) the expansion work per unit mass done, (G) MEP, and (H) thermal cycle efficiency. [ANSWERS: (A) 469.3°C, 237.5°C, (B) 2022 kPa, (C) 3.67 kJ/kg, (D) -1.60 kJ/kg, (E) -300.5 kJ/kg, (F) 474.8 kJ/kg, (G) 236.6 kPa, (H) 56.47%]
An engine operates on an Otto cycle with a compression ratio of 8. At the beginning of the isentropic compression process, the volume, pressure and the temperature of the air are 0.01 m³, 110 kPa, and 50°C, respectively. At the end of the combustion process, the temperature is 900°C. Find (A) the temperature at the remaining two states of the Otto cycle, (B) the pressure of the gas at the end of the combustion process, (C) heat added per unit mass to the engine in the combustion chamber, (D) heat removed per unit mass from the engine to the environment, (E) the compression work per unit mass added, (F) the expansion work per unit mass done, (G) MEP, and (H) thermal cycle efficiency. [ANSWERS: (A) 469.3°C, 237.5°C, (B) 2022 kPa, (C) 3.67 kJ/kg, (D) -1.60 kJ/kg, (E) -300.5 kJ/kg, (F) 474.8 kJ/kg, (G) 236.6 kPa, (H) 56.47%]
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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![An engine operates on an Otto cycle with a compression ratio of 8. At the beginning of the
isentropic compression process, the volume, pressure and the temperature of the air are 0.01
m³, 110 kPa, and 50°C, respectively. At the end of the combustion process, the temperature is
900°C. Find (A) the temperature at the remaining two states of the Otto cycle, (B) the pressure
of the gas at the end of the combustion process, (C) heat added per unit mass to the engine in
the combustion chamber, (D) heat removed per unit mass from the engine to the environment,
(E) the compression work per unit mass added, (F) the expansion work per unit mass done, (G)
MEP, and (H) thermal cycle efficiency. [ANSWERS: (A) 469.3°C, 237.5°C, (B) 2022 kPa,
(C) 3.67 kJ/kg, (D) -1.60 kJ/kg, (E) -300.5 kJ/kg, (F) 474.8 kJ/kg, (G) 236.6 kPa, (H) 56.47%]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0c1c3715-b001-4177-bd42-0910ded62f70%2F67ed712f-0c85-44d5-8e2e-d7c5b6a205af%2Fr2warxb_processed.png&w=3840&q=75)
Transcribed Image Text:An engine operates on an Otto cycle with a compression ratio of 8. At the beginning of the
isentropic compression process, the volume, pressure and the temperature of the air are 0.01
m³, 110 kPa, and 50°C, respectively. At the end of the combustion process, the temperature is
900°C. Find (A) the temperature at the remaining two states of the Otto cycle, (B) the pressure
of the gas at the end of the combustion process, (C) heat added per unit mass to the engine in
the combustion chamber, (D) heat removed per unit mass from the engine to the environment,
(E) the compression work per unit mass added, (F) the expansion work per unit mass done, (G)
MEP, and (H) thermal cycle efficiency. [ANSWERS: (A) 469.3°C, 237.5°C, (B) 2022 kPa,
(C) 3.67 kJ/kg, (D) -1.60 kJ/kg, (E) -300.5 kJ/kg, (F) 474.8 kJ/kg, (G) 236.6 kPa, (H) 56.47%]
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