Problem 3. Energy Balance on a Flow System with a Pump and Heat Exchanger.. Water stored in a large, well-insulated storage tank at 21.0C and atmospheric pressure is being pumped at steady state from this tank by a pump at the rate of 40m3/h. The motor driving the pump supplies energy at the rate of 8.5kW. The water is used as a cooling medium and passes through a heat exchanger, where 255kW of heat is added to the water. The heated water then flows to a second large, vented tank, which is 25m above the first tank. Determine the final temperature of the water delivered to the second tank. (Temperature at tank 2=26C )