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9.3 1800 kJ of heat is transferred to 1m² of air at 14 bar and 200 °C. Find (a) the final temperature and pressure if the volume remains constant, and (b) the final temperature and volume if the pressure remains constant. After which process has the internal energy of the air the greater value? When the air is then expanded isothermally to a pressure of 7 bar, what is the final volume in each case? [(a) 445 °C, 21.3 bar, 3.04 m³ (b) 375 °C, 1.37 m³, 2.74 m³]

9.3 1800 kJ of heat is transferred to 1m² of air at 14 bar and 200 °C. Find (a) the final temperature and pressure if the volume remains constant, and (b) the final temperature and volume if the pressure remains constant. After which process has the internal energy of the air the greater value? When the air is then expanded isothermally to a pressure of 7 bar, what is the final volume in each case? [(a) 445 °C, 21.3 bar, 3.04 m³ (b) 375 °C, 1.37 m³, 2.74 m³]

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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This is a question from a textbook I don't understand how they got those answers , please use the thermodynamics and transport properties of fluids by rogers and mayhew. 

9.3 1800 kJ of heat is transferred to 1 m³ of air at 14 bar and 200°C. Find (a) the final temperature and pressure if the volume remains constant, and (b) the final temperature and volume if the pressure remains constant. After which process has the internal energy of the air the greater value? When the air is then expanded isothermally to a pressure of 7 bar, what is the final volume in each case? 3 [(a) 445 °C, 21.3 bar, 3.04 m³ (b) 375 °C, 1.37 m³, 2.74 m³]
Transcribed Image Text:9.3 1800 kJ of heat is transferred to 1 m³ of air at 14 bar and 200°C. Find (a) the final temperature and pressure if the volume remains constant, and (b) the final temperature and volume if the pressure remains constant. After which process has the internal energy of the air the greater value? When the air is then expanded isothermally to a pressure of 7 bar, what is the final volume in each case? 3 [(a) 445 °C, 21.3 bar, 3.04 m³ (b) 375 °C, 1.37 m³, 2.74 m³]
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