what is the heat received per unit area,
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter8: Natural Convection
Section: Chapter Questions
Problem 8.50P
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The walls of a refrigerator are typically constructed with two metal panels enclosing an insulation layer. Consider an insulation layer made of fiberglass (k = 0.046 W/m°C) with a thickness of 50 mm, placed between two metal sheets (k = 60 W/m°C), each 3 mm thick. If the wall separates cold air at 4 °C from ambient air at 25 °C, what is the heat received per unit area, considering internal and external convective coefficients equal to 5 W/m²°C?
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