A 0.04-m3 tank initially contains air at ambient conditions of 100 kPa and 22°C. Now, a 17-L tank containing liquid water at 85°C is placed into the tank without causing any air to escape. After some heat transfer from the water to the air and the surroundings, both the air and water are measured to be at 44°C.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A 0.04-m3 tank initially contains air at ambient conditions of 100 kPa and 22°C. Now, a 17-L tank containing liquid water at
85°C is placed into the tank without causing any air to escape. After some heat transfer from the water to the air and the
surroundings, both the air and water are measured to be at 44°C.
Air, 22°C
Water
85°C
Determine the amount of heat lost to the surroundings. The gas constant of air is R= 0.287 kPa-m3/kg-K. Use the tables containing the
ideal-gas specific heats of various common gases and the properties of common liquids, solids, and foods. (You must provide an
answer before moving on to the next part.)
The amount of heat lost to the surroundings is
kJ.
Transcribed Image Text:A 0.04-m3 tank initially contains air at ambient conditions of 100 kPa and 22°C. Now, a 17-L tank containing liquid water at 85°C is placed into the tank without causing any air to escape. After some heat transfer from the water to the air and the surroundings, both the air and water are measured to be at 44°C. Air, 22°C Water 85°C Determine the amount of heat lost to the surroundings. The gas constant of air is R= 0.287 kPa-m3/kg-K. Use the tables containing the ideal-gas specific heats of various common gases and the properties of common liquids, solids, and foods. (You must provide an answer before moving on to the next part.) The amount of heat lost to the surroundings is kJ.
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