Question

A closed chamber containing a gas is at steady state. The shaft transfers power at a rate of W˙sh,in= 2.0 kW to the paddle wheel and the electric lamp consumes electricity at a rate of W˙el,in= 700 W .

ei, in sh, in

A) Using an energy balance determine the rate of heat transfer, in kW.

B) If the surface temperature of the chamber is 430 K , determine the entropy generated within the chamber, in kW/k

C) What would the entropy generation within the chamber be if the surface temperature increased to 530 K ? in kW/k

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