Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The influence of clothing distribution and local discomfort on the assessment of global thermal comfort
Abstract A field study was carried out in a hypermarket located in Southern Italy in order to evaluate the environmental comfort in large-scale retail trade buildings. Global and local thermal comfort conditions were studied by collecting exposure data and subjective responses of employees using both questionnaires and simultaneous physical measurements. In a few cases discrepancies appeared between subjective ratings and the corresponding PMV-index, suggesting that the latter could be unable to reliably estimate thermal comfort when clothing insulation is unevenly distributed on human body. Analysis of collected data confirmed this, with particular reference to female workers wearing skirts. In addition, such effects may be further emphasized by local thermal discomfort, which may finally influence global thermal perception. Analysis of the results showed that cold floor and radiant temperature asymmetry caused by warm ceiling played a major role in emphasizing the negative effects due to uneven clothing distribution, confirming that this particular combination of events may bias PMV model accuracy.
Highlights ► Uneven clothing distribution may bias PMV model accuracy. ► Local thermal discomfort causes may influence the global thermal perception and satisfaction. ► The most influent local discomforts are cold floor and radiant asymmetry caused by warm ceiling.
The influence of clothing distribution and local discomfort on the assessment of global thermal comfort
Abstract A field study was carried out in a hypermarket located in Southern Italy in order to evaluate the environmental comfort in large-scale retail trade buildings. Global and local thermal comfort conditions were studied by collecting exposure data and subjective responses of employees using both questionnaires and simultaneous physical measurements. In a few cases discrepancies appeared between subjective ratings and the corresponding PMV-index, suggesting that the latter could be unable to reliably estimate thermal comfort when clothing insulation is unevenly distributed on human body. Analysis of collected data confirmed this, with particular reference to female workers wearing skirts. In addition, such effects may be further emphasized by local thermal discomfort, which may finally influence global thermal perception. Analysis of the results showed that cold floor and radiant temperature asymmetry caused by warm ceiling played a major role in emphasizing the negative effects due to uneven clothing distribution, confirming that this particular combination of events may bias PMV model accuracy.
Highlights ► Uneven clothing distribution may bias PMV model accuracy. ► Local thermal discomfort causes may influence the global thermal perception and satisfaction. ► The most influent local discomforts are cold floor and radiant asymmetry caused by warm ceiling.
The influence of clothing distribution and local discomfort on the assessment of global thermal comfort
Simone, Antonio (Autor:in) / Della Crociata, Sabrina (Autor:in) / Martellotta, Francesco (Autor:in)
Building and Environment ; 59 ; 644-653
01.10.2012
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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