April 27, 2022 is the 27th International Noise Awareness Day. The aim of International Noise Awareness Day is to assist in promoting the awareness of the harmful effects of noise on hearing, health and quality of life, and inspiring positive action in the community. It does let more and more people know about this "invisible killer" through the publicity of noise pollution and other related knowledge.
Noise 'Killing' is Not Alarmist
According to a report published by the World Health Organization's "New Scientist" weekly, noise is an important cause of stress and many deaths. The report shows that 3% of people who die from heart disease or stroke in Europe are caused by traffic noise. Since 7 million people worldwide die of heart disease each year, using this percentage, it is possible that around 210,000 people die each year from noise-related diseases.
Noise killing is actually closely related to the structural characteristics of our human body. Since different parts and systems in the human body have their own natural frequencies, when the vibration frequency of the human body is close to or equal to the natural frequency of a certain part, resonance will occur, resulting in damage to body tissues. If the vital organs resonate, the discomfort of the human body will be stronger, the reaction will be stronger, and the harm to us will be greater.
The instrument test shows that the sound pressure level of traffic noise is mainly below 200Hz, which belongs to medium and low frequency noise. It is in the same frequency range as the natural frequencies of different parts and systems in the human body. Directly to the human ear bone, stimulates sympathetic nervousness, peripheral vasoconstriction, tachycardia, and elevated blood pressure. In addition, low-frequency noise has the characteristics of gradually slowing down noise, long transmission distance, strong diffraction ability, and low frequency, which is difficult for people to detect. Therefore, long-term People who work and live near highways or in urban areas with heavy traffic are easily affected by low-frequency noise and induce highly fatal diseases such as heart disease and stroke.
In addition to killing people, noise is also one of the main culprits that lead to the sub-health state of human life. Data studies have shown that long-term exposure to high noise environments will cause permanent hearing threshold shift, which is noise-induced deafness; noise acts on the human central nervous system, causing headache, insomnia, neurasthenia and other intractable nervous system diseases. Noise-induced sleep disorders can cause depression, anxiety, and even suicide risk more than 1.4 times higher than that of the general population; for every decibel increase in urban noise, the incidence of hypertension increases by 3%; noise affects the development of fetuses and children. Children's intellectual development in noise environment is slow, 20% lower than normal.
The Key to Indoor Noise Reduction is Glass
Some domestic scholars have calculated that "more than 80% of modern people's life is spent indoors." Therefore, the comfort of the indoor environment has a profound impact on people's health and work efficiency. By analyzing the sources of indoor noise, it can be found that the noise mainly comes from the following ways: door and window noise, wall noise, floor noise, indoor pipe noise and electrical noise in some residential buildings. and mechanical noise from equipment. Statistics show that among these noise sources, 90% of the external noise enters the room through doors and windows, while glass occupies 70% of the area of doors and windows. Therefore, it is very important to improve the noise reduction ability of door and window glass, reduce indoor noise and improve the quality of life.
ICESUN Vacuum Glass Care for Your Health "Quietly"
Nowadays, the common door and window glass are: ordinary insulating glass, laminated glass and vacuum glass. In order to verify the actual sound insulation effect of these types of glass, we used tempered vacuum glass (a vacuum glass product developed by ICESUN) to conduct a comparative experiment, and the results are as follows: (The attached picture is the field test of 60 broken bridge aluminum windows + vacuum glass windows):
The above measured data clearly show that the sound insulation of ordinary insulating glass is only 20.8dB, and the sound insulation of vacuum glass can reach 38dB, which is nearly twice that of ordinary insulating glass; even in the daytime, doors and windows equipped with vacuum glass can also reduce The indoor noise is reduced to 29dB, and the outdoor environmental noise is reduced by more than 50%, which meets the requirement that the nighttime noise in the bedroom is less than 30dB stipulated in the new version of the General Code for the Building Environment.
The reason that vacuum glass has better sound insulation performance than ordinary glass lies in its unique structure and principle: since the sound transmission medium is mainly air, water, and solid, while vacuum glass is to seal two pieces of flat glass around, making the air drawn from the middle to form a vacuum layer, which cuts off the transmission path of noise and creates the characteristics of zero sound transmission. At the same time, the vacuum layer also cuts off the way of heat transmission and realizes zero heat transfer. Therefore, vacuum glass has become a new generation of super insulation material. With excellent performance such as heat, extremely quiet and ultra-low dew point, high-tech vacuum glass products are the ultimate products of energy-saving and quiet glass.
Conclusion
The survey shows that nearly 2/3 of the urban residents in the country live in an environment with excessive noise, and the noise in many urban living areas is higher than 60 decibels. In 2020, the "National Eco-environmental Petition Complaint Reporting Management Platform" accepted more than 441,000 reports from the public, of which noise disturbance accounted for 41.2% of the total number of reports. The harm of noise is evident! Technology changes life. Let's experience the life high-tech vacuum glass brings, find "quietness" and say goodbye to noise!