Explanation Given data: The thickness of Styrofoam is 0.080 mm . The thickness of air is 3.5 mm . Formula used: Consider the expression for conductance. Conductance = k A L (1) Here, k is thermal conductivity of material, A is cross section area, and L is length. Explanation: Refer to Table 13.1 in textbook for thermal conductivities of selected materials. From table 13.1, the thermal conductivity of Styrofoam is 0.010 J s ⋅ m ⋅ C ° and thermal conductivity of air is 0.0256 J s ⋅ m ⋅ C ° . Modify the equation (1), for Styrofoam. Conductance = k s A L s Here, k s is thermal conductivity of Styrofoam, and L s is thickness for Styrofoam. Substitute 0.010 J s ⋅ m ⋅ C ° for k s and 0.080 mm for L s , ( Conductance ) s = ( 0.010 J s ⋅ m ⋅ C ° ) A 0.080 mm = ( 0.010 J s ⋅ m ⋅ C ° ) A 0.080 × 10 − 3 m { ∵ 1 mm = 10 − 3 m } = ( 125 J s ⋅ m 2 ⋅ C ° ) A Modify the equation (1), for air. Conductance = k a A L a Here, k a is thermal conductivity of air, and L a is thickness for air. Substitute 0.0256 J s ⋅ m ⋅ C ° for k a and 3

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ISBN: 9781119326342

Author: CUTNELL

Publisher: WILEY

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Chapter 13, Problem 7P

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The factor that the body adjusts the conductance.

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Chapter 13, Problem 6P

Chapter 13, Problem 8P

Chapter 13 Solutions

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Ch. 13.1 - Prob. 1CYU Ch. 13.2 - Prob. 2CYU Ch. 13.2 - Prob. 3CYU Ch. 13.2 - 4. Concrete walls often contain steel...Ch. 13.2 - Prob. 5CYU Ch. 13.2 - Prob. 6CYU Ch. 13.2 - Prob. 7CYU Ch. 13.2 - Prob. 8CYU Ch. 13.2 - Prob. 9CYU Ch. 13.3 - Prob. 10CYU

Ch. 13.3 - Prob. 11CYU Ch. 13.3 - Prob. 12CYU Ch. 13.3 - Prob. 13CYU Ch. 13.3 - Prob. 14CYU Ch. 13.3 - Prob. 15CYU Ch. 13 - Prob. 1FC Ch. 13 - Prob. 2FC Ch. 13 - 4. The drawing shows a composite slab consisting...Ch. 13 - Prob. 6FC Ch. 13 - Prob. 8FC Ch. 13 - Prob. 10FC Ch. 13 - Prob. 11FC Ch. 13 - Prob. 1P Ch. 13 - 2. In an electrically heated home, the temperature...Ch. 13 - Prob. 3P Ch. 13 - Prob. 4P Ch. 13 - Prob. 5P Ch. 13 - Prob. 6P Ch. 13 - Prob. 7P Ch. 13 - Prob. 8P Ch. 13 - Prob. 9P Ch. 13 - Prob. 10P Ch. 13 - Prob. 11P Ch. 13 - Prob. 12P Ch. 13 - Prob. 13P Ch. 13 - *14. Two pots are identical except that the flat...Ch. 13 - Prob. 15P Ch. 13 - Prob. 16P Ch. 13 - Prob. 18P Ch. 13 - Prob. 20P Ch. 13 - Prob. 21P Ch. 13 - Prob. 22P Ch. 13 - Prob. 23P Ch. 13 - Prob. 24P Ch. 13 - Prob. 25P Ch. 13 - Prob. 26P Ch. 13 - 27. A baking dish is removed from a hot oven and...Ch. 13 - Prob. 28P Ch. 13 - 29. Suppose the skin temperature of a naked person...Ch. 13 - Prob. 30P Ch. 13 - Prob. 31P Ch. 13 - Prob. 32P Ch. 13 - Prob. 35AP Ch. 13 - Prob. 36AP Ch. 13 - Prob. 37AP Ch. 13 - Prob. 38AP Ch. 13 - Prob. 39AP Ch. 13 - *40. Part a of the drawing shows a rectangular bar...Ch. 13 - Prob. 41AP Ch. 13 - Prob. 42AP Ch. 13 - *45. A wood-burning stove (emissivity = 0.900 and...Ch. 13 - Prob. 46CCP Ch. 13 - Prob. 47CCP Ch. 13 - Prob. 48TP Ch. 13 - Prob. 49TP

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