Research on added thermal insulation of typical office chairs

Clothing thermal insulation is an important factor affecting indoor human thermal comfort. Understanding the added thermal insulation provided by the chair under sitting posture is the key to accurately predicting indoor human thermal comfort. In this study, six typical office chairs and three typical clothing ensembles in different seasons are selected through on-site research. The changes of the overall and local clothing thermal insulation in standing and sitting postures are studied using a thermal manikin. The clothing thermal insulation value in sitting posture and the added thermal insulation value of chairs in relevant literature and standards are compared, and the added thermal insulation value of different office chairs in each season is given. The research finds that the overall thermal insulation value of clothing decreases by 6% to 10% from standing to sitting posture, and the added thermal insulation value of chairs under clothing in different seasons ranges from 0.02 clo to 0.24 clo, which is wider than the range of relevant standards at home and abroad.