Wearable Personal Cooling System

Abstract

Heat Stroke is a major problem these days. A lot of people from hot temperature environments are suffering from the very decease and many of the lot have died due to the very decease. A device is needed to be developed to protect people for overcoming this disease. The device under study solves the very problem. Human race has been looking for comfort since early ages, and a surrounding temperature of one’s own desire is one of the ultimate kind of comfort that a person looks for. The device protects from heat strokes and provides the desirous temperature for the human body at all times and remotely everywhere. This is a product based project. The device or the product is a wearable temperature moderating device. The ultimate design is a wrist based prototype which provides enough temperature moderation for a single human being. It is a cost and power efficient alternative of an air conditioner. The main principle of the product is Peltier effect and the principle equipment used in the device is thermoelectric materials based on Peltier effect. A thermoelectric material consists of a junction of two metals, using the phenomenon of Peltier effect, when electric current is supplied on the junction of the metals, due to the power supplied, one metal becomes colder and the other becomes hotter. In principle, one side of the thermoelectric material becomes colder and the other becomes hotter. The cold side is put in contact with the human body for the purpose of temperature moderation while the hot side temperature is moderated by heat exchangers and forced convection by fin type heat exchanger and fan respectively. The cold side is put on top of wrist artery, which cools the human skin on top of it while the cold human skin cools the artery and hence the blood flowing into the artery which flows into the whole body and provides a cooling sensation for the whole body hence fulfilling the device’s purpose. The device thus made used a power of 65 W, which is minimal as compared to that used by the air conditioner. The cooling sensation provides a satisfying effect on the body on a hot day.