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Parallel and serial methods of calculating thermal insulation in European manikin standards

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Author

Summary, in English

Standard No. EN 15831:2004 provides 2 methods of calculating insulation: parallel and serial. The parallel method is similar to the global one defined in Standard No. ISO 9920:2007. Standards No. EN 342:2004, EN 14058:2004 and EN 13537:2002 refer to the methods defined in Standard No. EN ISO 15831:2004 for testing cold protective clothing or equipment. However, it is necessary to consider several issues, e.g., referring to measuring human subjects, when using the serial method. With one zone, there is no serial–parallel issue as the results are the same, while more zones increase the difference in insulation value between the methods. If insulation is evenly distributed, differences between the serial and parallel method are relatively small and proportional. However, with more insulation layers overlapping in heavy cold protective ensembles, the serial method produces higher insulation values than the parallel one and human studies. Therefore, the parallel method is recommended for standard testing.

Publishing year

2012

Language

English

Pages

171-179

Publication/Series

International Journal of Occupational Safety and Ergonomics

Volume

18

Issue

2

Document type

Journal article

Publisher

Taylor & Francis

Topic

  • Production Engineering, Human Work Science and Ergonomics

Keywords

  • thermal manikin European standard clothing insulation serial calculation method parallel calculation method human subject studies

Status

Published

Research group

  • Thermal Environment Laboratory

ISBN/ISSN/Other

  • ISSN: 2376-9130