A 3D Printed Thermal Manikin Head for Evaluating Helmets for Convective and Radiative Heat Loss

Conference paper (2019)

Authors

Guido De Bruyne Universiteit Antwerpen
Shriram Mukunthan Universiteit Antwerpen
Jochen Vleugels Universiteit Antwerpen
T. Huysmans Universiteit Antwerpen, Applied Ergonomics and Design - IDE
Tiago Sotto Mayor Universidade do Porto
Guido De Bruyne Universiteit Antwerpen, Lazer Sport NV
Research Group
Applied Ergonomics and Design (IDE) (TU Delft)
Heat transfer Convective heat loss Radiative heat gain Thermal manikin head Wind tunnel Helmet thermal performance
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Published Date

2019

Language

English

Reuse Rights

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Faculty

Industrial Design Engineering

Department

Human-Centered Design

Research Group

Applied Ergonomics and Design

Abstract

Thermal performance of three bicycle helmets for radiative and convective heat loss was evaluated through heat loss experiments in a wind tunnel. A 3D printed thermal manikin head of a 50th percentile western male population was developed. Thermal performance of a helmet was quantified by comparing the manikin head heat losses with and without helmet. Experiments were performed for two air velocities: 1.6 m/s and 6 m/s. An infrared heat lamp positioned above the manikin simulated the effect of solar load. The results from the experiments showed a convective cooling efficiency between 89% and 96% for open helmets and between 78% and 83% for closed helmets. The radiative heat gain ranged from 3.5 W to 4.5 W for open helmets and 5 W to 8 W for closed helmets.