Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Q14 An air standard Otto cycle has a compression ratio of (8), temperature and
pressure at the beginning of compression are (20 °C) and (1 bar) respectively. The
constant volume heat addition is (1800 Kj/Kg). Calculate the maximum temperature
and pressure for the cycle and the temperature at the end of the expansion process.
What is the efficiency and mean effective pressure of the cycle? Take Cv = 0.7288
Kj/Kg.K and y=1.41.
Answers: T3-3156.8K, P3-8622.6 KN/m², T4=1345.8K, 57.36 %, 1348.9 KN/m²
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Transcribed Image Text:Q14 An air standard Otto cycle has a compression ratio of (8), temperature and pressure at the beginning of compression are (20 °C) and (1 bar) respectively. The constant volume heat addition is (1800 Kj/Kg). Calculate the maximum temperature and pressure for the cycle and the temperature at the end of the expansion process. What is the efficiency and mean effective pressure of the cycle? Take Cv = 0.7288 Kj/Kg.K and y=1.41. Answers: T3-3156.8K, P3-8622.6 KN/m², T4=1345.8K, 57.36 %, 1348.9 KN/m²
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