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You are transporting an ice chest completely filled with ice-water mixture for keeping your cold drinks chilled on your beach trip. The heat transfer occurs
You are transporting an ice chest completely filled with ice-water mixture for keeping your cold drinks chilled on your beach trip. The heat transfer occurs primarily through the lid, which measures 70 cm by 40 cm. The lid of the ice chest consists of an outer layer of plastic (3 cm thick, k = 0.15 W/mK), a middle layer of still air (1 cm thick, k = 0.022 W/mK), and a bottom layer of Styrofoam (6 cm thick, k = 0.035 W/mK). Given that the temperature of the icy water is 2C and the temperature of outside air is 38C, determine: a. The rate of heat loss through the lid. b. The temperature of the Styrofoam layer facing the water. c. The temperature of the plastic layer facing the air Given: Convective heat transfer between water and Styrofoam is 15 W/m2 K Convective heat transfer between air and plastic is 28 W/m2 K
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