Solid Waste Engineering
Solid Waste Engineering
3rd Edition
ISBN: 9781305635203
Author: Worrell, William A.
Publisher: Cengage Learning,
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Chapter 7, Problem 7.16P
To determine

The temperature inside an RDF-fired unit and a mass burn unit.

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An aluminum pipe has a length of 54 m at a temperature of 10°C. An adjacent steel pipe at the same temperature is 8 mm longer. At what temperature will the aluminum pipe be 24 mm longer than the steel pipe? Assume that the coefficient of thermal expansion for the aluminum is 22.5x10-6/°C and that the coefficient of thermal expansion for the steel is 12.5×10-6/°C.
A nuclear fuel pellet consists of an aluminum cladding[E1 = 90 GPa; α1 = 42.2 × 10-6 /°K] with an outsidediameter of D and an inside diameter of d, restrained toa uranium core [E2 = 190 GPa; α2 = 15.9 × 10-6 /°K] witha diameter d. [D = 17 mm; d = 14 mm; L = 13 mm]Determine the normal force in the aluminum cladding ifthe temperature of the pellet is raised by ΔT = 317 °K.[Hint: The total axial deformations in both materials areidentical. The axial forces induced in both aluminum anduranium are also identical with opposite signs.]
You are designing a 4340 steel shaft that is going to be press fit into an 2014 T6 aluminum housing. The 4340 steel rod has the following properties: E =29 Mpsi, Sy =75 ksi, and the coefficient of thermal expansion (alpha) = 10.8 x 10-6 K^(-1). The 2014 T6 aluminum housing has the following properties: E =10.5 Mpsi, Sy =54 ksi, and the coefficient of thermal expansion (alpha) =23.1 x 10-6 K^(-1). The operating temperatures range from -30F to 400F. Which of the following statements are true? (Note: more than one statement could be true) There is a mismatch between the coefficients of thermal expansion between the steel and aluminum, which could lead to problems in the press fit at cold and high temperatures. The yield strength of the aluminum is less than that of steel, which means the aluminum will behave in a more rigid manner than the steel. The elastic modulus of steel is greater than that of aluminum, meaning that the aluminum will behave in a brittle manner while the steel will…
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