Engineering, 23.10.2019 02:00 kiki4832
Superheated steam at an average temperature of 200°c is transported through a steel pipe (k=50 w/m-k, do = 8 cm, di = 6 cm and l = 20 m). the pipe is insulated with a 4 cm thick gypsum plaster (k=0.5 w/m-k). the insulated pipe is placed horizontally in a warehouse where the average temperature is 10°c. the steam and air side heat transfer coefficients are 800 and 200 w/m²- k respectively. calculate a) rate of heat transfer from the superheated steam b) outside surface temperature of the insulation.
Answers: 1
Engineering, 04.07.2019 03:10, lauriepdx17
What precautions should you take to prevent injuries when dealing with heavy loads?
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Engineering, 04.07.2019 18:10, anna22684
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
Engineering, 04.07.2019 18:10, 0436500
Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.
Answers: 1
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
Superheated steam at an average temperature of 200°c is transported through a steel pipe (k=50 w/m-k...
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