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heat transfer The double-glazed window with a height of 1.2m and a width of 2m has a...

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Mechanical Engineering

heat transfer

The double-glazed window with a height of 1.2m and a width of 2mhas a gap of stagnant air (k = 0.026W / m ° C) with a width of 12mmbetween the glass of 3mm (k = 0.78W / m ° C). On a day when theoutside temperature is kept at 24 ° C, find the continuous heattransfer rate and inner surface temperature in this glass window.(Take the heat transfer coefficients h1 = 10W / m² ° C and h2 = 25W/ m² ° C on the inner and outer surface of the window and neglectthe number of heat transfer coats by radiation)
b) Interpret how the heat transfer would have been if there was avacuum between the two glasses (air was completely discharged).

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