A steam line is insulated with 15 cm of rock wool. The steam line is a 5 cm OD iron pipe with a 5 mm thick wall. Estimate the heat loss through the pipe per meter length if steam at 120ºC is in the line and the surrounding temperature is 20ºC. Also determine the temperature distribution through the pipe and insulation.
What will be an ideal response?
You might also like to view...
The operation of a microwave oven makes use of
A) the polar nature of water molecules. B) flip flopping of polarized molecules. C) an oscillating electric field. D) all of the above E) none of the above
First Law of Thermodynamics: A cylinder contains 1.50 moles of an ideal monatomic gas that is initially at a temperature of 317 K. If the gas gains 2730 J of heat and performs 780 J of work, what is its final temperature? (R = 8.31 J/mol ? K)
A. 359 K B. 421 K C. 526 K D. 687 K E. 756 K
Although electrons in metal move in haphazard directions at many times the speed of sound, the drift speed of electrons that compose electric current is
A) a fraction of a centimeter per second. B) many centimeters per second. C) the speed of a sound wave. D) the speed of light. E) none of the above
The fatter a given length of wire, the higher its resistance
Indicate whether the statement is true or false