Journal
APPLIED ERGONOMICS
Volume 40, Issue 4, Pages 577-590Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apergo.2008.04.022
Keywords
Thermal insulation; Moisture vapour resistance; Mechanisms of heat and mass transfer; Prediction model; Ventilation; Clothing physical characteristics
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Based on the improved understanding of the effects of wind and walking motion on the thermal insulation and moisture vapour resistance of clothing induced by air ventilation in the clothing system, a new model has been derived based on fundamental mechanisms of heat and mass transfer, which include conduction, diffusion, radiation and natural convection, wind penetration and air ventilation. The model predicts thermal insulation of clothing under body movement and windy conditions from the thermal insulation of clothing measured when the person is standing in the still air. The effects of clothing characteristics such as fabric air permeability, garment style, garment fitting and construction have been considered in the model through the key prediction parameters. With the new model, an improved prediction accuracy is achieved with a percentage of fit being as high as 0.96. (C) 2008 Elsevier Ltd. All rights reserved.
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