A 60-lb aluminum bar, initially at T; = 150°F, is placed in a tank together with 190 lb of liquid water, initially at Tw = 70°F, and allowed to achieve thermal equilibrium. The aluminum bar and water can be modeled as incompressible with specific heats c, = 0.216 Btu/lb-°R and Cw = 0.998 Btu/lb-°R, respectively. Consider the aluminum bar and water as the system and ignore heat transfer between the system and its surroundings. Determine the final temperature Tr, in °F, and the amount of entropy produced within the tank, in Btu/°R.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A 60-lb aluminum bar, initially at T3 = 150°F, is placed in a tank together with 190 lb of liquid water, initially at Tw = 70°F, and allowed
to achieve thermal equilibrium. The aluminum bar and water can be modeled as incompressible with specific heats c, = 0.216
Btu/lb-°R and Cw = 0.998 Btu/lb-°R, respectively. Consider the aluminum bar and water as the system and ignore heat transfer
between the system and its surroundings.
Determine the final temperature Tr, in °F, and the amount of entropy produced within the tank, in Btu/°R.
Transcribed Image Text:A 60-lb aluminum bar, initially at T3 = 150°F, is placed in a tank together with 190 lb of liquid water, initially at Tw = 70°F, and allowed to achieve thermal equilibrium. The aluminum bar and water can be modeled as incompressible with specific heats c, = 0.216 Btu/lb-°R and Cw = 0.998 Btu/lb-°R, respectively. Consider the aluminum bar and water as the system and ignore heat transfer between the system and its surroundings. Determine the final temperature Tr, in °F, and the amount of entropy produced within the tank, in Btu/°R.
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