Consider a jacket made of 5 layers of 0.1-mm-thick cotton fabric (k = 0.060 W/m.C) with a total of 4 layers of 1-mm-thick air space (k = 0.026 W/m.C) in between. Assuming the inner surface temperature of the jacket is 25C and the surface area normal to the direction of heat transfer is 1.1 m2, determine the rate of heat loss through the jacket when the temperature of the outdoors is 0C and the heat transfer coefficient on the outer surface is 18 W/m2.°C.
(a) 6 W
(b) 115 W
(c) 126 W
(d) 287 W
(e) 170 W
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