In Chapter 11, we explained the concept of windchill factors.We said that the heat trans...

In Chapter 11, we explained the concept of windchill factors.We said that the heat transfer rates from your body to the surroundings increase on a cold, windy day. Simply stated, you lose more body heat on the cold, windy day than you do on a calm day. The windchill index accounts for the combined effect of wind speed and the air temperature. It accounts for the additional body heat loss that occurs on a cold, windy day. The windchill values are determined empirically, and a common correlation used to determine the windchill index is