Engineering, 26.07.2019 19:20 MogTaee
Combustion gases passing through a 3 cm internal diameter circular pipe are used to vaporize waste water at atmospheric pressure. hot gases enter the pipe at 250 c at a mean velocity of 5 m/s, and leave at 150°c. if the average heat transfer coefficient is 40 w/m2-k and the inner surface temperature of the pipe is 110°c, determine the surface area of the pipe. (ρ = 0.7662 kg/m, cp=1023 j/kg-k) a. 0.012 m2 b. 0.035 m2 0.061 m2 c. d. 0.087 m2
Answers: 2
Engineering, 04.07.2019 18:10, settasav9641
Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.
Answers: 3
Engineering, 04.07.2019 18:10, leomessifanboy678
The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody
Answers: 2
Engineering, 04.07.2019 18:10, juansoto227711
Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery
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Engineering, 04.07.2019 18:20, jessie8022
Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.
Answers: 2
Combustion gases passing through a 3 cm internal diameter circular pipe are used to vaporize waste w...
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