Engineering, 28.07.2020 17:01, neolmar9329

A cylinder of diameter D= 10 mm and temperature T, = 100°C is centrally located in an extruded square coating of bakelite of dimension w = 11 mm. The ambient tem- perature is To = 25°C and a convection coefficient of value h= 100 W/m². K exists at the outer surfaces of the bakelite. Determine the heat transfer rate per unit length of the cylinder. Plot the heat transfer rate per length over the range 10 mm Sw< 100 mm. Explain the dependence of the heat transfer rate on the bakelite thickness that is evident in your plot. Also derive the critical value of w that maximizes heat transfer from the cylinder.

Answers: 1

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, johnthienann58

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented

Answers: 2

continue

Engineering, 04.07.2019 18:10, ijohnh14

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way

Answers: 2

continue

Engineering, 04.07.2019 18:10, jojoangelique13

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

continue

Engineering, 04.07.2019 18:20, krojas015

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?

Answers: 3

continue

Do you know the correct answer?

A cylinder of diameter D= 10 mm and temperature T, = 100°C is centrally located in an extruded squar...