Engineering, 29.10.2019 03:31, lanipooh01
Convection, conduction, and overall u. a gas at 450 k is flowing inside a 2-in. steel pipe, schedule 40. the pipe is insulated with 51 mm of lagging having a mean k = 0.0623 w/m · k. the convective heat-transfer coefficient of the gas inside the pipe is 30.7 w/m2 · k and the convective coefficient on the outside of the lagging is 10.8. the air is at a temperature of 300 k. calculate the heat loss per unit length of 1 m of pipe using resistances. repeat, using the overall u0 based on the outside area a0.
Answers: 3
Engineering, 04.07.2019 18:10, ahmedeldyame
Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.
Answers: 1
Engineering, 04.07.2019 18:10, samanthabutryn
Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan
Answers: 3
Convection, conduction, and overall u. a gas at 450 k is flowing inside a 2-in. steel pipe, schedule...
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