A closed tank containing hot air has an initial internal energy of 400 kJ. During the next 5 min, the tank loses heat to the surroundings at a rate of 1.5 kW,
A closed tank containing hot air has an initial internal energy of 400 kJ. During the next 5 min, the tank loses heat to the surroundings at a rate of 1.5 kW,
Sustainable Energy
2nd Edition
ISBN:9781337551663
Author:DUNLAP, Richard A.
Publisher:DUNLAP, Richard A.
Chapter8: Direct Use Of Solar Energy
Section: Chapter Questions
Problem 15P
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A closed tank containing hot air has an initial internal energy of 400 kJ. During the next 5 min, the tank loses heat to the surroundings at a rate of 1.5 kW, while an electrical element supplies 1000 W to the air. Find the final internal energy of the air.
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