problem17_p111

University Physics with Modern Physics with Mastering Physics (11th Edition)

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17.111: The ratio will be the inverse of the ratio of the total thermal resistance, as given by Eq. (17.24). With two panes of glass with the air trapped in between, compared to the single pane, the ratio of the heat flows is , ( ) ( ) ( 2 ( 0 glass) glass air air 0 glass glass R k L k L R k L + + + where
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Unformatted text preview: R is the thermal resistance of the air films. Numerically, the ratio is ( 29 . 9 . 2 W K m 0.15 K) m W (0.80 m) 10 2 . 4 ( K)) m W (0.024 m) 10 ((7.0 W K m 0.15 K)) m (0.80 m) 10 2 . 4 (( 2 2 3 3 2 3 = + + + ---W...
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