Consider a sealed, rigid container of 10 kg of water vapor at 25°C and 80 kPa. A paddle wheel with a power rating of 1 kW is operated within the tank for 30 minutes. During that time 7 kJ of heat are lost to the surroundings. 1. Define the system. 2. What types of energy transfer occur? 3. What is the net energy change of the system? Taking water as an ideal gas (R = 0.4615 kJ /kg · K and c, = 1.8723 k]/kg - K), determine the final temperature and pressure of the water vapor. 4.
Consider a sealed, rigid container of 10 kg of water vapor at 25°C and 80 kPa. A paddle wheel with a power rating of 1 kW is operated within the tank for 30 minutes. During that time 7 kJ of heat are lost to the surroundings. 1. Define the system. 2. What types of energy transfer occur? 3. What is the net energy change of the system? Taking water as an ideal gas (R = 0.4615 kJ /kg · K and c, = 1.8723 k]/kg - K), determine the final temperature and pressure of the water vapor. 4.
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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Question
![Consider a sealed, rigid container of 10 kg of water vapor at 25°C and 80 kPa. A paddle wheel
with a power rating of 1 kW is operated within the tank for 30 minutes. During that time 7 kJ of
heat are lost to the surroundings.
1.
Define the system.
2.
What types of energy transfer occur?
3.
What is the net energy change of the system?
Taking water as an ideal gas (R = 0.4615 kJ /kg · K and cp = 1.8723 kJ/kg ·
K), determine the final temperature and pressure of the water vapor.
4.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F81a22820-0724-44db-880d-4f4de505deac%2Fa94fdac6-57ad-461d-aed6-ddd3d9179674%2Fnoi5ox2_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Consider a sealed, rigid container of 10 kg of water vapor at 25°C and 80 kPa. A paddle wheel
with a power rating of 1 kW is operated within the tank for 30 minutes. During that time 7 kJ of
heat are lost to the surroundings.
1.
Define the system.
2.
What types of energy transfer occur?
3.
What is the net energy change of the system?
Taking water as an ideal gas (R = 0.4615 kJ /kg · K and cp = 1.8723 kJ/kg ·
K), determine the final temperature and pressure of the water vapor.
4.
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