First, I got a Top5 in James Dyson Award 2016!! 

 Coolmet is the best way to prevent heat stroke : By cooling the helmet with thermo-electric element to generate electricity while working under the direct sunlight.


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My Inspirations!!

 My father works in the construction industry. He suffers from hot weather so I would like to make a fresh feeling which affects the back of the neck and the back from the helmet. In hot summer, the workers under direct sunlight are vulnerable. There is no shade of a tree and wind. If they have a heatstroke, they should make the body cool (especially the back of the neck and the back) But it is very difficult to them. So using new and renewable energy, we made Coolmet which can make cool wind.


How it Works??

 Solar energy- generating electricity –rotating Fan – air in – Thermoelectric element’s cooling part – air out – body cooling We use a solar panel on the Coolmet for power production. This voltage is 12V. And then, if the switch is on, thermoelectric element and fan work. So this fan can keep in the wind. And the thermoelectric element makes this wind cool. The cool air is 12.5℃. It also makes the worker’s nape very cool. We use a very small fan. This is a very light material. So Coolmet is 0.4kg. It is not heavy.


Design Process 

 1. Empathy: Nowadays, the peak temperature reaches over 33 Celcius during the daytime worldwide. Due to this increase in the temperature, the heat stroke in vastly increasing. Temporary heat stroke occurs due to the inability to control body temperature caused by the hot air. This dangerous occurrence is common to railroad workers, pavement road workers, and wasteland workers.

2. Define: Laborers mentioned above works under the direct sunlight. There are no shades or cooling systems outside due to their working condition. This also influences their work efficiency due to their body condition. The first symptom of the heat stroke originates from their back part of the neck and the back. Thus, the most effective method to prevent the heat stroke is to cool the neck and the back.

3. Ideate: What the workers, who work under the direct sunlight need a protective helmet. Due to the nature of their work, they always wear a protective helmet, which also relates to the back part of the neck and the back. From there, we further developed the idea in generating electricity with solar panel which could operate fans for the cool air.

4. Prototype: We made a lot of sketches and rendering to design the cooling road. We calculated airflow, considering fluid dynamics. We also created prototypes of the protective helmet with resin, solar panel and thermo-electric fan. We also considered the safety feature in the inner part of the helmet.

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