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  • Title: On the Effect of Thermophysical Properties of Clothing on the Heat Strain Predicted by PHS Model.
    Author: d'Ambrosio Alfano FR, Palella BI, Riccio G, Malchaire J.
    Journal: Ann Occup Hyg; 2016 Mar; 60(2):231-51. PubMed ID: 26420266.
    Abstract:
    Procedures and equations reported in ISO 9920 for the correction of basic thermophysical clothing properties taking into account pumping effect and air movement are very different from those used by the Predicted Heat Strain (PHS) model in ISO 7933. To study the effect of these differences on the assessment of hot environments using the PHS model, an analysis focusing on the modelling of the dynamic thermal insulation and the vapour resistance of the clothing reported in ISO 9920 and ISO 7933 standards will be discussed in this paper. The results are useful evidence to start a discussion on the best practice for dealing with clothing thermophysical properties and underline the need to harmonize the entire set of standards in the field of the Ergonomics of the Thermal Environment. ISO 7933 is presently under revision.
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