A student living in a 4-m x 6-m x 6-m dormitory room turns on her 150-W...

 

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A student living in a 4-m x 6-m x 6-m dormitory room turns on her 150-W fan before she leaves the room on a summer day, hoping that the room will be cooler when she comes back in the evening. Assuming all the doors and windows are tightly closed and disregarding any heat transfer through the walls and the windows, determine the T in the room when she comes back 10 h later. Use specific heat values at room T, and assume the room to be at 100 kPa and 15°C in the morning when she leaves. ROOM 4 m x 6 m x 6 m Fan A student living in a 4-m x 6-m x 6-m dormitory room turns on her 150-W fan before she leaves the room on a summer day, hoping that the room will be cooler when she comes back in the evening. Assuming all the doors and windows are tightly closed and disregarding any heat transfer through the walls and the windows, determine the T in the room when she comes back 10 h later. Use specific heat values at room T, and assume the room to be at 100 kPa and 15°C in the morning when she leaves. ROOM 4 m x 6 m x 6 m Fan

Answer rating: 100% (QA)

Explanation The temperature of the room initially is 15 degree celsius but the room is isolated so ... View the full answer