Clothing resultant thermal insulation determined on a movable thermal manikin. Part II: effects of wind and body movement on local insulation

Yehu Lu, Faming Wang, Xianfu Wan, Guowen Song, Chengjiao Zhang, Wen Shi

Research output: Journal article publicationJournal articleAcademic researchpeer-review

29 Citations (Scopus)


Part II of this two-part series study was focused on examining the effects of wind and body movement on local clothing thermal insulation. Seventeen clothing ensembles with different layers (i.e., 1, 2, or 3 layers) were selected for this study. Local thermal insulation with different air velocities (0.15, 1.55, and 4.0 m/s) and walking speeds (0, 0.75, and 1.17 m/s) were investigated on a thermal manikin. Empirical equations for estimating local resultant clothing insulation as a function of local insulation, air velocity, and walking speed were developed. The results showed that the effects of wind and body movement on local resultant thermal resistance are complex and differ distinctively among different body parts. In general, the reductions of local insulation with wind at the chest, abdomen, and pelvis were greater than those at the lower leg and back, and the changes at the body extremity such as the forearm, thigh, and lower leg were higher than such immobile body parts as the chest and back. In addition, the wind effect interacted with the walking effect. This study may have important applications in human local thermal comfort modeling and functional clothing design.
Original languageEnglish
Pages (from-to)1487-1498
Number of pages12
JournalInternational Journal of Biometeorology
Issue number10
Publication statusPublished - 26 Oct 2015
Externally publishedYes


  • Local resultant insulation
  • Local thermal comfort
  • Local thermal insulation
  • Pumping effect
  • Thermal manikin

ASJC Scopus subject areas

  • Ecology
  • Atmospheric Science
  • Health, Toxicology and Mutagenesis

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