Engineering, 26.03.2020 17:38 ksawyer745
Water at 20 °C with a mass of 10 kg is in a piston/cylinder assembly with an initial volume of 1 m³. The piston initially resting on the stops has a mass such that a pressure of 150 kPa will float it. Now the water is slowly heated to 150 °C.
(a) Represent the heating process using the appropriate piston-cylinder schematic sequence. Include all the known variables.
(b) Find the initial state (v, T, P, and x in case there is a saturated mixture in the system).
(c) Find the state of the water when the piston is about to rise (v, T, P, and x in case there is a saturated mixture in the system).
Answers: 3
Engineering, 04.07.2019 18:20, maustin5323
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]
Answers: 1
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