The smface area of an adult human is about 1.8 m2. Supposea person with a skin
Chapter 12, Problem 108(choose chapter or problem)
The smface area of an adult human is about 1.8 m2. Supposea person with a skin temperature of 34C is standing with bareskin in a room where the air is 25C but the walls are J 7C.a. There is a "dead-air" layer next to your skin that acts asinsulation. If the dead-air layer is 5.0 mm thick, what is theperson 's rate of heat loss by conduction?b. What is the person's net radiation loss to the walls? Theemissivi ty of skin is 0.97.c. Does conduction or radiation contribute more to the totalrate of energy loss?d. If the person is metabolizing food at a rate of 155 W, doesthe person feel comfortable, chilly, or too warm?
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