An initially open, rigid, 2-m³ tank is sitting in a large room. The room is filled with air at 300 K and 1 bar. A paddlewheel is then inserted into the tank and the tank is sealed. Some amount of work is then done by the paddlewheel, under various conditions. a) Accounting for the variability of specific heat with temperature, determine the entropy generated during this process for W = 600 kJ if the tank is insulated. b) Accounting for the variability of specific heat with temperature, determine the entropy generated during this process for W = 600 kJ if the tank is not insulated. In this scenario, the tank eventually reestablishes thermal equilibrium with the large room.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Hi, can you please help me with this entropy problem?

An initially open, rigid, 2-m³ tank is sitting in a large room. The room is filled with air at 300 K and 1 bar.
A paddlewheel is then inserted into the tank and the tank is sealed. Some amount of work is then done
by the paddlewheel, under various conditions.
a) Accounting for the variability of specific heat with temperature, determine the entropy
generated during this process for W = 600 kJ if the tank is insulated.
b) Accounting for the variability of specific heat with temperature, determine the entropy
generated during this process for W = 600 kJ if the tank is not insulated. In this scenario, the
tank eventually reestablishes thermal equilibrium with the large room.
Transcribed Image Text:An initially open, rigid, 2-m³ tank is sitting in a large room. The room is filled with air at 300 K and 1 bar. A paddlewheel is then inserted into the tank and the tank is sealed. Some amount of work is then done by the paddlewheel, under various conditions. a) Accounting for the variability of specific heat with temperature, determine the entropy generated during this process for W = 600 kJ if the tank is insulated. b) Accounting for the variability of specific heat with temperature, determine the entropy generated during this process for W = 600 kJ if the tank is not insulated. In this scenario, the tank eventually reestablishes thermal equilibrium with the large room.
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