An aluminum rod conducts 7.50 cal/s from a heat source maintained at 240°C to a large

Solution 41 P

Step 1 of 2

We have to calculate the rate entropy increases per unit time in the process where an aluminum rod conducts 7.50 cal /s from a heat source maintained at 240°C to a large body of water at 27°C.

The entropy change for the process is the sum of entropy change for the high temperature heat source and the large body of wateris given by

where,

heat lost by the heat source in J    

 heat gained by the water body in J

temperature of the heat source

          = 240 oC

temperature of the water body =

           27 oC