Research on Evaluating the Indices of Dynamic Fabric Heat and Moisture Comfort

Based on the microenvironment theory, this article introduces a new type of fabric microenvironment testing instrument to measure the dynamic changes of vapor pressure, temperature, and heat flux under simulated human body sweating conditions. According to the curves measured, heat and moisture ratio (HMR) and coefficient R are calculated to evaluate the heat and moisture transmitting property of fabrics. It has been proved that these two indices could effectively distinguish the fabric heat and moisture comfort in latent and apparent sweating conditions.