@article{ref1,
title="Thermal Perception of Ventilation Changes in Full-Face Motorcycle Helmets: Subject and Manikin Study",
journal="Annals of occupational hygiene",
year="2011",
author="Bogerd, C. P. and Rossi, René Michel and Bruhwiler, Paul A.",
volume="55",
number="2",
pages="192-201",
abstract="We report the effects of full-face motorcycle helmet ventilation systems on heat, airflow, noise, and comfort perception for ventilation changes on the scalp. Eight subjects (aged 28.0 ± 5.4 years) underwent two experimental trials at ambient temperatures of 23.7 ± 0.4°C or 27.5 ± 0.3°C. In each trial, the thermally equilibrated subjects underwent two examination phases, during which four different helmets were assessed at wind speeds of 39.2 ± 1.9 km h(-1) and 59.3 ± 1.4 km h(-1). Vent-induced heat loss in the scalp ranged from -6.1 to 6.1 W, corresponding to vents being closed or opened, respectively. Perception of vent-induced changes was assessed immediately after the change. We find that the vent-induced heat loss, the subject, and the helmet are the most important response factors. In addition, comparison of two helmets with similar vent-induced heat loss suggests that internal airflow patterns may be important in explaining the observed perception differences.<p /> <p>Language: en</p>",
language="en",
issn="0003-4878",
doi="10.1093/annhyg/meq074",
url="http://dx.doi.org/10.1093/annhyg/meq074"
}