Characteristics of Human Body Micro-thermal Environment under Displacement Ventilation

Obtaining the features of human body micro-thermal environment is the basis for assessing indoor human thermal comfort. As to a typical building space, distribution of air temperature on 0.2 m front and back of human body, different height indoor air temperature that 0.2m away from the ventilation outlet, globe temperature and wall temperature under displacement ventilation were tested in this study. The results show that, from human foot to the head region, both front and back of human body temperature emerge a trend of rise firstly but fall then. The temperature peaks of back and front human body appear at the height of about 1.6m and 1.2m, respectively. Meanwhile, the temperature that 0.2m away from the ventilation outlet shows a significant fluctuation along the height direction. Wall temperature and globe temperature are mainly affected by the heat gain from human body and supply air temperature. (C) 2015 The Authors. Published by Elsevier Ltd.