PROJECTED AREA FACTORS OF THE HUMAN BODY AT STANDING POSTURE UNDER DIFFERENT CLOTHING CONDITIONS

Abstract

The amount of direct solar radiation incident upon the body surface can be calculated, if the area of the human body projected sunwards is known. The purpose of this paper is to calculate the projected area of the human body at standing posture under different clothing conditions. The projected areas of eleven subjects were measured from various angles and azimuths by the use of a photographic method. The following fire clothing conditions are adopted: an undergarment, a short sleeve shirt and shorts, a short sleeve shirt and trousers, a suit, a suit and a court. The projected area factors under each condition were drawn in the charts. As a result, it was 1.1 times and 1.4 times for the short sleeve shirt and shorts and for the suit and the court compared with the case of the undergarment, respectively.