Abstract
In order to solve the problem of sunstroke for helmet wearing person under strong sunshine or close hot environments due to the high temperature between the person’s head and the helmet, a thermoelectric cooling helmet is proposed. However, due to the curve nature of the head, the even temperature distribution inside the helmet is normally a big challenge, we propose a thermoelectric cooling helmet using thermoelectric cooler (TEC) combining a new heat transfer design scheme. In this design, using hydrogel with very high percentage of water filled in soft package attached on high thermal conductive thin fins is applied to establish a heat transfer channel between the head and the cold surface of the thermoelectric cooler. The control of the cold surface temperature of the thermoelectric cooler element and the rapid heat transfer of the high thermal conductive thin fins provide precise control of the internal temperature of the helmet, while enhancing the comfort of the helmet by utilizing the softness of the hydrogel. The heat transfer structure of this combination of high thermal conductive thin fins and hydrogel is a very important guide for the heat dissipation of other curved heat generating objects.
Highlights
The relevant literature shows that the head's heat production is large and head is a high heat dissipation zone of the human body [1][2]
It can be seen that thermoelectric cooler is suitable for temperature control inside helmets compared with other methods
This paper aims at the structural design of the heat transfer structure of the combination of high thermal conductive thin fins and hydrogel between the head and the cold surface of the thermoelectric cooler (TEC), and carries out thermodynamic modeling and simulation of the three designed structures
Summary
The relevant literature shows that the head's heat production is large and head is a high heat dissipation zone of the human body [1][2]. Takeaway, errands and other staff in the process of outdoor work, in order to ensure safety, will wear a helmet, the current safety helmet generally use the following design scheme: helmet mainly consists of shell (helmet outermost hard shell), cap body (helmet internal foam inner layer), safety harness, brim, air holes, padding composition [3]. This helmet design has poor heat dissipation. It can be seen that thermoelectric cooler is suitable for temperature control inside helmets compared with other methods
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