A double-glazed window has two panes of glass separated by an air space, Fig. 14-20. (a) Show

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A double-glazed window has two panes of glass separated by an air space, Fig. 14-20.
(a) Show that the rate of heat flow through such a window by conduction is given by where k1, k2, and k3 are the thermal conductivities for glass, air, and glass, respectively.
(b) Generalize this expression for any number of materials placed next to one another.


A(T, - T.) 1/ki + /k + ly/ks Glass Air -4-4-4-
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Principles of heat transfer

ISBN: 978-0495667704

7th Edition

Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn

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