Introduction

Every year a reasonable number of people die in sun stroke while working in summer. To save their life from this life threatening condition and to make their working style more comfortable we are trying to cool their skul. In this project we are making a cooling helmet in which the cooling fan is activated when the person wearing the helmet works under the sun in high temperature. Fan speed is proportional to temperature.

Components required

Solar panel

Cooling fan

Nuts and bolts

Helmet

Wire

Switch

Working

The forced cooling air enters into the helmet through the holes and provides a cooling sensation. The skull temperature remains at lower level and avoid any condition of heat exhaustion. The required electrical power is collected from the light weight solar panel mounted on the top of the helmet. The cooling process is proportional to the intensity of sunlight. That means at the noon when the sun is exactly above us and radiating excess heat, the cooling is maximum. The switch provided in series with the solar panel gives the user an option to switch off the cooling fan. As the helmet is of white colour it reflects back the most of the sun light. When air from environment comes in contact with sweating skin it feels cool due to the evaporation of sweat. Because evaporation causes cooling. As we are getting the power directly from the sun through solar cell no need to use any batteries. So, the energy we are using to operate the cooling fan is completely free and clean.

Applications

1-It is very useful for field engineers and workers those who are working in summer.

2-It has a wide application in agriculture sector in which farmers have to work under the sky at day time.

3-It can be used by road walkers, cyclists, mountain trackers as it provides both safety and cooling.