In an air standard Otto cycle the maximum and minimum temperatures are 1400 and 15°C. The heat supplied per kilogram of air is 800 kJ. Calculate the compression ratio and the cycle efficiency. Calculate also the ratio of maximum to minimum pressures in the cycle. (5.27/1: 48.5%; 30.65/1)
In an air standard Otto cycle the maximum and minimum temperatures are 1400 and 15°C. The heat supplied per kilogram of air is 800 kJ. Calculate the compression ratio and the cycle efficiency. Calculate also the ratio of maximum to minimum pressures in the cycle. (5.27/1: 48.5%; 30.65/1)
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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![10:38
5.5 In an air standard Otto cycle the maximum and minimum temperatures are 1400 and
15°C. The heat supplied per kilogram of air is 800 kJ. Calculate the compression ratio
and the cycle efficiency. Calculate also the ratio of maximum to minimum pressures
in the cycle.
All 60%
(5.27/1: 48.5%; 30.65/1)
5.6 A four-cylinder petrol engine has a swept volume of 2000 cm³, and the clearance volume
in each cylinder is 60 cm³. Calculate the air standard cycle efficiency. If the introduction
conditions are I bar and 24 °C, and the maximum cycle temperature is 1400 °C, calculate
the mean effective pressure based on the air standard cycle.
(59.1%: 5.28 bar)
5.7 Calculate the cycle efficiency and mean effective pressure of an air standard diesel
cycle with a compression ratio of 15/1, and maximum and minimum cycle temperatures
of 1650 °C and 15°C respectively. The maximum cycle pressure is 45 bar.
(59.1%; 8.38 bar)
5.9
5.8 In a dual-combustion cycle the maximum temperature is 2000°C and the maximum
pressure is 70 bar. Calculate the cycle efficiency and the mean effective pressure when
the pressure and temperature at the start of compression are 1 bar and 17°C respectively.
The compression ratio is 18/1.
(63.6%; 10.46 bar)
An air standard dual-combustion cycle has a mean effective pressure of 10 bar. The
minimum pressure and temperature are 1 bar and 17 °C respectively, and the compression
ratio is 16/1. Calculate the maximum cycle temperature when the cycle efficiency is
60%. The maximum cycle pressure is 60 bar.
(1759°C)
000](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4e0d31db-bb8f-4ae7-be93-1a2a624854da%2Fb96747fe-65c2-47d9-9c08-479a89235819%2F2h1hx3q_processed.jpeg&w=3840&q=75)
Transcribed Image Text:10:38
5.5 In an air standard Otto cycle the maximum and minimum temperatures are 1400 and
15°C. The heat supplied per kilogram of air is 800 kJ. Calculate the compression ratio
and the cycle efficiency. Calculate also the ratio of maximum to minimum pressures
in the cycle.
All 60%
(5.27/1: 48.5%; 30.65/1)
5.6 A four-cylinder petrol engine has a swept volume of 2000 cm³, and the clearance volume
in each cylinder is 60 cm³. Calculate the air standard cycle efficiency. If the introduction
conditions are I bar and 24 °C, and the maximum cycle temperature is 1400 °C, calculate
the mean effective pressure based on the air standard cycle.
(59.1%: 5.28 bar)
5.7 Calculate the cycle efficiency and mean effective pressure of an air standard diesel
cycle with a compression ratio of 15/1, and maximum and minimum cycle temperatures
of 1650 °C and 15°C respectively. The maximum cycle pressure is 45 bar.
(59.1%; 8.38 bar)
5.9
5.8 In a dual-combustion cycle the maximum temperature is 2000°C and the maximum
pressure is 70 bar. Calculate the cycle efficiency and the mean effective pressure when
the pressure and temperature at the start of compression are 1 bar and 17°C respectively.
The compression ratio is 18/1.
(63.6%; 10.46 bar)
An air standard dual-combustion cycle has a mean effective pressure of 10 bar. The
minimum pressure and temperature are 1 bar and 17 °C respectively, and the compression
ratio is 16/1. Calculate the maximum cycle temperature when the cycle efficiency is
60%. The maximum cycle pressure is 60 bar.
(1759°C)
000
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