Prediction of Thermal Sensation in Dynamic Environment with TSENS Index

Many theoretic and experimental indexes of clothed human sensation evaluation have been presented in environment and clothing fields in the past many years. However, most of those indexes apply to stable conditions when human body is in equilibrium with the surrounding environment. In real scenario, people live in a constantly changing environment. Knowing and being able to predict human thermal sensation under mutant ambient condition would be significantly necessary. The purpose of this research is to find out a way to evaluate and predict human thermal sensation under dynamic environment. Based on the simulation of wearer's average body temperature by taking Stolwijk's thermoregulation model.as a starting tool, TSENS index was introduced to predict thermal sensation in the mutant variable environment imposed. The calculation value was validated with wearer trial experiment data in 4 cases. The result shows that TSENS index provides reasonable prediction to the dynamic thermal sensation.