Two tanks are connected by a pipe with 600 mm in diameter and 4000 m in length the difference in height between the free surfaces of the two 20 m tanks. a small pipeline was connected at a distance of 1000 m from the upper tank. calculate the flow that is discharged to the lower tank if the small pipe is discharged 100 l/s

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]