Proceedings | |
A Thermal Test System for Helmet Cooling Studies | |
Fitzgerald, Shaun1  | |
关键词: thermal comfort; bicycle helmets; human mannequin; cycling; | |
DOI : 10.3390/proceedings2060272 | |
学科分类:社会科学、人文和艺术(综合) | |
来源: mdpi | |
【 摘 要 】
One of the primary causes of discomfort to both irregular and elite cyclists is heat entrapment by a helmet resulting in overheating and excessive sweating of the head. To accurately assess the cooling effectiveness of bicycle helmets, a heated plastic thermal headform has been developed. The construction consists of a 3D-printed headform of low thermal conductivity with an internal layer of high thermal mass that is heated to a constant uniform temperature by an electrical heating element. Testing is conducted in a wind tunnel where the heater power remains constant and the resulting surface temperature distribution is directly measured by 36 K-type thermocouples embedded within the surface of the head in conjunction with a thermal imaging camera. Using this new test system, four bicycle helmets were studied in order to measure their cooling abilities and to identify âhot spotsâ where cooling performance is poor.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201902029169544ZK.pdf | 716KB | download |