Water is the working fluid in an ideal rankine cycle. the condenser pressure is 10 kpa (0.10 bar), and saturated vapor enters the turbine at 18 mpa (180 bar). the net power output of the cycle is 100 mw. for this cycle determine the: a) mass flow rate of the steam, in kg/h. b) heat transfer rates for the working fluid passing through the boiler and condenser, each in kw. c) thermal efficiency of the cycle

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]