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A 10 m 15 m double pane window consists of two 4 mm thick layers of glass

A 1.0 m × 1.5 m double-pane window consists of two 4-mm-thick layers of glass (k = 0.78 W/m·K) that are separated by a 5-mm air gap (kair = 0.025 W/m·K). The heat flow through the air gap is assumed to be by conduction. The inside and outside air temperatures are 20°C and 220°C, respectively, and the inside and outside heat transfer coefficients are 40 and 20 W/m2·K. Determine

(a) the daily rate of heat loss through the window in steady operation and

(b) the temperature difference across the largest thermal resistence.

Jul 21 2020 View more View Less

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