Study on Mechanism of Sensation of Dryness and Lower Limit of Indoor Humidity Accepted by Occupants

为合理营造无干燥感的室内环境，研究了干燥产生的机理和物理条件。在问卷调查的基础上，明确了问题的存在和身体中感到干燥的部位。此外，建立了预测皮肤、眼睛和喉咙水分蒸发速率的模型，为根据温度、湿度、风速等环境条件估计人体干燥程度奠定了基础。

To properly create an indoor environment without sensation of dryness, the mechanism and physical condition of occurrence of dryness were studied. Based on the questionnaire surveys, the existence of the problem and the segments of the body where dryness is sensed were clarified. In addition, a model which predicts moisture evaporation rate from the skin, eye, and throat was developed, and the base of the estimation of dryness of human body according to the environmental conditions such as temperature, humidity, and air velocity was established.