Compute the effects of wind chill by considering a model for a human as a cylinder of 30-cm diameter and 1.8 m high, with a surface temperature of 30 ◦C. a. Estimate the rate of heat loss from the...

Compute the effects of wind chill by considering a model for a human as a cylinder of 30-cm diameter and 1.8 m high, with a surface temperature of 30 ◦C.

a. Estimate the rate of heat loss from the cylinder in the absence of wind, but assume a typical human motion of 3 mph (you can neglect the top and bottom of the cylinder).

b. Calculate the rate of heat loss in a 20-mph wind at 5 ◦C.

 c. What is the rate of heat loss if the surface is covered by a thin film of water (at the same temperature) that evaporates and the relative humidity of the air is 75%?