Indices of Windchill of Clothed Persons

Abstract

The concept of windchill as a measure of the combined effects of low temperature and wind is reviewed. An analysis is presented of the effect of these variables on a person dressed for cold climates and takes account of all important modes of heat loss, including breathing and heat transfer through clothing. This analysis leads to two chief indices of windchill: the windchill equivalent temperature, which is tabulated and compared with existing tables, and the clothing thickness required to maintain a person in thermal equilibrium. The distributions of clothing thickness and of the windchill of exposed skin at 30C are described.