Quieter Modern Hand Dryers
Conventional warm air hand dryers have a design that makes them extremely noisy in operation, and aside from creating a disturbance in areas close to bathrooms, their use can be daunting for small children and other people who are sensitive to sound. Choosing more modern quiet hand dryers such as the Mitsubishi Electric Wave i01 hands-in dryer can reduce the amount of noise present to create a more pleasant and quieter environment.
Why Are Older Hand Dryers Noisy
Most older hand dryers use the same method to dry a user’s hands. Slow moving air is blown over a heating element to create a slow-moving breeze over the skin. This warm air, coupled with the action of rubbing the hands together spreads the water from washing over the skin so that it can evaporate. Such designs can generate a lot of noise – up to 87dB, which is the equivalent of heavy traffic nearby.
There are two main factors that contribute to the noise:
Exposed Internal Components
The need for a large vent for the air to flow through after passing over the heating element in an evaporative hand dryer means that there is nothing stopping the sound of the motor and fan from being amplified into the surrounding area. While it is possible to add some sound damping to the body of the dryer, the large vent means that most sound will still escape.