Mining Sound Attenuators

Everything You Need to Know About Sound Attenuators

Have you ever been in a room and the noise from the fans and other equipment makes the room very uncomfortable for you to concentrate? Well, that’s not the case in all offices because some are enhanced by what we call sound attenuators also known as duct silencers, mufflers or sound traps. This equipment is typically designed to reduce the noise that is transmitted right from a certain source to the receiver. They are proven to be very effective in noise reduction. They are usually installed at the intake, at the discharge sides or at the receiver side of the noise generating equipment.

A sound attenuator is essential in absorbing unpleasant sound which is called noise. They have been basically made for purposes of reducing noise in any heating, ventilation and all systems that involve air conditioning. If you want a peaceful and quiet environment serene for meditation and effective office work, you just have no other option than to install sound attenuators. It is usual that a fan produces a lot of noise especially when it is traveling along ventilation ducts which in turn create an uncomfortable nature in your office or house. That’s why you need to employ these duct silencers.

Models of Sound Attenuators

Sound traps come along in different sizes, materials, and shapes. Some of their sizes range from 4, 6, 8, 12 to 16 inches. They come in rectangular and circular shapes. You are supplied this equipment depending on the place of application, that, they are supplied depending on your specification both for commercial and industrial applications.

Sound attenuators most are made from a galvanized sheet of steel and are filled with various materials (mineral fibre) that have the ability to absorb sound. That’s why mostly they are called dissipative silencers. Their inner duct usually comprises a perforated sheet steel/metal which covers the mineral fibre so as to prevent them from being eroded by airflow. There are basically two types of sound attenuators that are commonly used:

  • Rectangular shaped attenuators
  • Round sound attenuators

Rectangular shaped attenuators

They come in 3 basic sizes depending on their heights namely small, medium and large. They operate by keeping the flow of air in close contact with the sound absorbers. The more you increase the length and height of the sound attenuator the more the sound will be attenuated or decreased and the air pressure significantly dropped. Depending on their sizes they have different dynamic insertion loss, self-noise sound power ratings, and airflow performance.

Round sound attenuators

Their outer shell which is galvanized spiral pipe is larger than the inner perforated liner. The centre absorber has a spun metal head that is a cone-shaped tail for purposes of effective attenuation and optimum drop in pressure. These sound or noise attenuators are filled with an insulation of mineral fibre. They come in different diameter sizes and lengths which consequently determine their self-noise sound power, dynamic insertion loss, and their airflow performance.

Benefits of Sound Attenuators

Most of these sound attenuators are used in the ducting phase of an air conditioning system. They are basically used to decrease the sound waves intensity using the fibre materials stocked in them. They reduce the amplitude without affecting the waveform of the signal.

It is usual that air conditioners produce a lot of noise and that’s where attenuators come in to minimize it without affecting the space around. In addition, they are used as silencers for various blowers and fans. They are also used in cooling towers to reduce that high sound produced by those large machines.

If you are looking for a cool working environment then you should install a sound attenuator.

Why Do We Mine?

What are the reasons for why humans mine minerals?

Why do we mine? Have you ever wondered why countries devote a lot of investment and resources into mining minerals? In Australia alone, the mining industry counts for a significant portion of economic activity. Around 138 billion dollars per year is generated by the Australian mining industry. That is around more than twice than agriculture or tourism will contribute the Australian economy per year. But aside from the economics of mineral extraction, there are a lot of more reasons why Australia and many other countries in the world continue to mine precious metals and minerals from the earth. Here is why mining is such a prevalent industry.

Our electronics and goods need minerals

You are probably reading this article on an electronic device, such as a mobile smartphone or a PC. And those electronic devices need certain minerals to function. Those minerals such as gold, lead, gallium, cobalt, etc. are all needed in the batteries, circuits, and other components of your electronic devices. Modern society and a lot of what we depend on as humans rely on the minerals that are extracted through mining. Just take a look at the various goods that you have around your homes, such as your clothes, car, appliances, and even some certain foods. Production of those goods would not be possible without gaining the raw materials needed to create them.

Mining provides building materials

Most buildings, especially those huge skyscrapers that you see in cities, need the raw materials from the mining industry. Take for example a high-rise building. These kinds of buildings need a steel frame, and steel is processed from iron, which is an ore that is mined in many places around Australia. Even your residential building probably has got raw building materials that were taken from mines. Concrete, stone and other kinds of building materials all need to be mined and extracted from the ground. So without mining resources from the earth, the only practical building materials that we would have would be wood.

It generates jobs

The mining industry in Australia is a huge business. And because it is so big, there are so many jobs that it generates as well. Skilled labor is always needed within the mining industry. Miners, engineers, geologists, are just some of the jobs that people work in the mining industry. And mining is a lucrative business, meaning that people can get good jobs if they work in the mining industry. Without the presence of the mining industry, thousands of people could potentially lose their job. So it is good for economic stability and employment that the mining industry is there.

So as you can see, there are a lot of reasons for why mining is so important for any country. There are so many benefits to be gained from mining. And while there are certain pitfalls to mining, such as environmental degradation, those pitfalls, and negative side effects can be averted, if proper procedures and care are followed. It more than worth it to mine resources from the earth. After all, modern life would not be possible without mining. Human infrastructure and modern society are built on the resources that we have gained from mining.