.5m x 2.5 m double-pane window consists of two 4.5-mm-thick layers of glass (0.75= [d] W/m·K) that are separated by a 2.5 mm air gap (0.025= [f] W/m·K). The heat flow through the air gap is assumed to be by conduction. The inside and outside air temperatures are 20 and - 1°C, respectively, and the inside and outside heat transfer coefficients are 32 and 12 W/m2 ·K. 3.1) Determine the daily rate of heat loss through the window in steady 1°Coperation. (15) 3.3) Calculate the temperature difference across the largest thermal resistance.
.5m x 2.5 m double-pane window consists of two 4.5-mm-thick layers of glass (0.75= [d] W/m·K) that are separated by a 2.5 mm air gap (0.025= [f] W/m·K). The heat flow through the air gap is assumed to be by conduction. The inside and outside air temperatures are 20 and - 1°C, respectively, and the inside and outside heat transfer coefficients are 32 and 12 W/m2 ·K. 3.1) Determine the daily rate of heat loss through the window in steady 1°Coperation. (15) 3.3) Calculate the temperature difference across the largest thermal resistance.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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0.5m x 2.5 m double-pane window consists of two 4.5-mm-thick layers of glass
(0.75= [d] W/m·K) that are separated by a 2.5 mm air gap (0.025= [f] W/m·K). The heat flow
through the air gap is assumed to be by conduction. The inside and outside air
temperatures are 20 and - 1°C, respectively, and the inside and outside heat
transfer coefficients are 32 and 12 W/m2
·K.
3.1) Determine the daily rate of heat loss through the window in steady 1°Coperation. (15)
3.3) Calculate the temperature difference across the largest thermal resistance.
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