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Answer to Question #79002 in Mechanical Engineering for Emmanuel Peter

Question #79002
A domestic freezer has an internal capacity of 1m * 10.5m * 0.5m. The temperature inside is maintained at -5°c in ambient temperature of up to 35°c. Calculate the maximum rate of heat transfer to the freezer if the wall and door consists of:
5mm plastic. K = 1W/mK
15mm insulation K = 0.05W/mK
2mm steel. K = 40W/mK
and the convective heat transfer coefficient is 8W/m²K on both sides of the freezer
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