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A new clothing resistance model for estimating outdoor thermal load is proposed and its behavior is analyzed in different weather conditions. It is based on clothed human body energy balance considerations; the human treated is a walking human in outdoor conditions. Weather and human data are taken from the internet site of the Hungarian Meteorological Service and from a Hungarian human dataset, respectively. Environmental thermal load is characterized in terms of clothing resistance rcl and operative temperature. The model's main strength is that it simulates metabolic rate M as simply as possible. rcl deviations caused by personal variations of M are the largest in extreme cold and warm conditions, in the comfort zone this effect is non-essential. rcl deviations caused by wind speed variations can be especially large in large heat excess cases. Further model tests are needed for more extreme conditions.
Ács et al. (Tue,) studied this question.