An insulated, electrically heated tank for hot water contains 190 kg of liquid water at 60°C when a power outgas occurs. If water is withdrawn from the tank at a steady rate of m = 0.2 kg/s, how long...

Thermodynamics

Extracted text: An insulated, electrically heated tank for hot water contains 190 kg of liquid water at 60°C when a power outgas occurs. If water is withdrawn from the tank at a steady rate of m = 0.2 kg/s, how long will it take for the temperature of the water in the tank to drop from 60 to 35°C. Assume that cold water enters the tank at 10C, and that heat losses from the tank are %3D negligible. For liquid water let Cy = Cp = C, independent of T and P. %3D