Home appliances and apparatus help us perform our daily tasks; however, they also produce a certain level of unwanted noise that reduces the comfort in the room and our quality of life. Our aim is to scale down the noise levels to a minimum. The paper focuses on reducing the sound power of a laundry dryer. Sound power can be reduced in various ways, and we decided to use sound-absorbing material, in our case the polyurethane foam in two varying thicknesses. First, we measured the sound power of the laundry dryer without the absorbing material. Next, we covered some predetermined places of the laundry dryer with the polyurethane foam and once again measured the sound power. Lastly, we selected the absorbing material on the right side and on the gaps of the last side of the laundry dryer. This way we used less polyurethane foam and at the same time reduced the sound power of the laundry dryer by 3,4 dB.
|
