subject
Engineering, 20.12.2019 05:31 sarinaneedshelp01

A25-cm-diameter stainless steel ball (rho = 8055 kg/m3, cp = 480 j/kg·°c) is removed from the oven at a uniform temperature of 300 °c. the ball is then subjected to the flow of air at 1 atm pressure and 25 °c with a velocity of 3 m/s. the surface temperature of the ball eventually drops to 200 °c. determine the average convection heat transfer coefficient during this cooling process. estimate the average rate of heat transfer.

ansver
Answers: 3

Another question on Engineering

question
Engineering, 04.07.2019 18:10
The flow rate of air through a through a pipe is 0.02 m5/s. a pitot static tube is placed in the flow. the radius of the pitot static tube is 1 mm. assuming the flow to be steady and the air to be at 300k, calculate the difference in total and static pressure if the diameter of the pipe is: (a) d 0.1 m d 0.05 m (c) d 0.01 m
Answers: 2
question
Engineering, 04.07.2019 18:20
Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero
Answers: 2
question
Engineering, 04.07.2019 18:20
Aheavily insulated piston-cylinder device contains 0.02 m3 of steam at 300 kpa and 200 °c. 1.2 mpa. d this process. team is now compressed in a reversible manner to a pressure of etermine the entropy change and the work done on the steam during this process
Answers: 1
question
Engineering, 04.07.2019 19:10
Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?
Answers: 3
You know the right answer?
A25-cm-diameter stainless steel ball (rho = 8055 kg/m3, cp = 480 j/kg·°c) is removed from the oven a...
Questions
question
Computers and Technology, 10.04.2021 02:00
question
Mathematics, 10.04.2021 02:00
Questions on the website: 13722361