subject
Engineering, 26.07.2019 20:20 yvettegonzalez3390yg

Acan of soda is initially at a uniform temperature of 3°c. the aluminum can is 12.5-cm high and has a diameter of 6 cm. the thickness of the can wall is 0.11 mm. the combined convective and radiative heat transfer coefficient between the can and the surrounding air of 25°c is 10 w/m2 · k. (a) determine the overall heat transfer coefficient, assuming the heat transfer from the bottom of the can is negligible. (b) estimate how long it will take for the average temperature of the soda to rise to 10°c, assuming the heat transfer rate is constant at its initial value. (c) in order to slow the warming of the soda, the soda is placed in a 1-cm thick cylindrical koozie (k = 0.13 w/m · k). estimate how long it will now take for the average temperature to rise to 10°c, recognizing that the top of the can is not covered.

ansver
Answers: 2

Another question on Engineering

question
Engineering, 04.07.2019 18:10
Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.
Answers: 2
question
Engineering, 04.07.2019 18:10
Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.
Answers: 2
question
Engineering, 04.07.2019 18:20
Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false
Answers: 2
question
Engineering, 04.07.2019 18:20
Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.
Answers: 1
You know the right answer?
Acan of soda is initially at a uniform temperature of 3°c. the aluminum can is 12.5-cm high and has...
Questions
question
Mathematics, 18.09.2019 17:50
question
Physics, 18.09.2019 17:50
question
Mathematics, 18.09.2019 17:50
question
Spanish, 18.09.2019 17:50
Questions on the website: 13722363