For every hair salon, having a good quality hair-dryer is very important for providing efficient service to their customers. The basic principle of this electrical device is to blow out hot air for increasing the rate of evaporation. The concept of the Hair-dryer was first introduced in the late 19th century, and the first hand-held hair drying device was first introduced in the year of 1920.
In the basic model, there would be two switches, for on and off and in the more complex model, you would have other buttons for regulating temperature and other settings.
The basic principle of hair dryers
The evaporation rate is controlled by the relative humidity, which means by the ratio of the water the air might hold. For example, if we consider that relative humidity is about 70%, then it would signify that the surrounding air has about 70% water content as in the form of the humidity. It could still intake about 30% extra water content as water vapor.
When the air gets heated, it loses its water content thus, decreasing the relative humidity. Lower humidity rate means it could absorb more water content, thus increasing the rate of evaporation.
The working of the hair-dryer
In the hair-dryer, there are two major components; one is the heat coiling system, and another one is the motor fan that would push out the heated air. The heat coiling system is made up of nichrome metallic wire, which is an excellent heating component. As being a good resistor, the wire would resist the flow of the electricity, thus getting heated up in the process. The fan attached with the motor would push the heated air out of the vent thus creating an air-flow.
From this article, you would be able to understand the basic principle and basic working of the hair-dryer. Only after understanding its basic principle, you would be able to select the best hair dryer for hair.