Chapter 16, Problem 63. A person is standing in a room at 18 ◦C. The exposed surface area and skin temperature of the person are
1.7 m2 and 32 ◦C, respectively, the convection heat transfer coefficient is 5 W/m2 ·K, and the emissivity of the skin and clothes is 0.9. Determine the total rate of heat transfer.
Each serving gives 3 grams or 12% of daily recommended value. Divide 100% by 12% to get 8.33 servings to obtain the daily recommended value of 25 grams.