Correction of the heat loss method for calculating clothing real evaporative resistance

Faming Wang, Chengjiao Zhang, Yehu Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)

Abstract

In the so-called isothermal condition (i.e., T<sub>air</sub> [air temperature]=T<sub>manikin</sub> [manikin temperature]=T<sub>r</sub> [radiant temperature]), the actual energy used for moisture evaporation detected by most sweating manikins was underestimated due to the uncontrolled fabric 'skin' temperature T<sub>sk,f</sub> (i.e., T<sub>sk,f</sub><T<sub>manikin</sub>). Thus, it must be corrected before being used to compute the clothing real evaporative resistance. In this study, correction of the real evaporative heat loss from the wet fabric 'skin'-clothing system was proposed and experimentally validated on a 'Newton' sweating manikin. The real evaporative resistance of five clothing ensembles and the nude fabric 'skin' calculated by the corrected heat loss method was also reported and compared with that by the mass loss method. Results revealed that, depending on the types of tested clothing, different amounts of heat were drawn from the ambient environment. In general, a greater amount of heat was drawn from the ambient environment by the wet fabric 'skin'-clothing system in lower thermal insulation clothing than that in higher insulation clothing. There were no significant differences between clothing real evaporative resistances calculated by the corrected heat loss method and those by the mass loss method. It was therefore concluded that the correction method proposed in this study has been successfully validated.
Original languageEnglish
Pages (from-to)45-51
Number of pages7
JournalJournal of Thermal Biology
Volume52
DOIs
Publication statusPublished - 1 Aug 2015
Externally publishedYes

Keywords

  • Heat loss method
  • Isothermal condition
  • Mass loss method
  • Real evaporative resistance
  • Sweating thermal manikin

ASJC Scopus subject areas

  • Physiology
  • Biochemistry
  • Agricultural and Biological Sciences(all)
  • Developmental Biology

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