15.13 Example 13

One type of oil (specific heat 0.51 cal/g*K) is cooled in a heat exchanger. If the oil, with a flow of 3 L/min, enters to the heat exchanger at 72 C and exits with a temperature of 27 C, What is the flow of the water, used as refrigerant (specific heat 4187 J/kg*K), if this enters with a temperature of 20 C and exits with a temperature of 63 C? Give your answer on L/min.

Solution with FisicaLab

Select the Thermodynamics group and, inside this, the Calorimetry and gases module. Erase the content of the chalkboard. And add one element Heat exchanger, as show the image below:

To this element:

TRi

20 @ C

TRf

63 @ C

dR/dt

Q @ L/min

cR

4187

TFi

72 @ C

TFf

27 @ C

dF/dt

3 @ L/min

cF

0.51 @ cal/g*K

Now click in the icon Solve to get the answer:

Q = 1.601 L/min ;
Status = success.