Engineering, 27.11.2019 03:31, mcqueen10travis
Ashell-and-tube heat exchanger is used for the heating of oil from 20°c to 30°c ; the oil flow rate is 12 kg/s (cp = 2.2 kj/kg* k). the heat exchanger has one shell pass and two tube passes. hot water (cpw = 4.18 kj/kg* k) enters the shell at 75°c and leaves the shell at 55°c. the overall heat-transfer coefficient based on the outside surface of the tubes is estimated to be 1080 w/m2 * k. determine:
a. the corrected logarithmic-mean temperature difference.
b. the required surface area in the exchanger.
Answers: 3
Engineering, 03.07.2019 14:10, aliceohern
The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite
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Engineering, 03.07.2019 15:10, breannaasmith1122
Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.
Answers: 1
Engineering, 04.07.2019 18:10, yasminothman02
An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet
Answers: 3
Engineering, 04.07.2019 18:10, keigleyhannah30
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
Ashell-and-tube heat exchanger is used for the heating of oil from 20°c to 30°c ; the oil flow rate...
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