Engineering, 26.12.2019 04:31 StephenCurry34
Aheat exchanger contains 400 tubes with inner diameter of 23 mm and outer diameter of 25 mm. the length of each tube is 3.7 m. the corrected log mean temperature difference is 23°c, while the inner surface convection heat transfer coefficient is 3410 w/m2 ·k and the outer surface convection heat transfer coefficient is 6820 w/m2 ·k. if the thermal resistance of the tubes is negligible, determine the heat transfer rate.
Answers: 3
Engineering, 04.07.2019 18:10
If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79
Answers: 1
Engineering, 04.07.2019 18:10
Burgers vector is generally parallel to the dislocation line. a)-true b)-false
Answers: 2
Engineering, 04.07.2019 18:10
Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1
Answers: 1
Engineering, 04.07.2019 19:10
Arigid tank contains 10 kg of air at 137 kpa (abs) and 21°c. more air is added to the tank until the pressure and temperature rise to 242 kpa (abs) and 32°c, respectively. determine the amount of air added to the tank. [r-0.287 kj/kg k]
Answers: 3
Aheat exchanger contains 400 tubes with inner diameter of 23 mm and outer diameter of 25 mm. the len...
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