How Noisy Is Your Generator?
It is a universal truth that work generates noise. However, that doesn’t mean that operating a diesel generator has to create a disturbance. There are several tried and true methods of reducing the noise a generator produces. Consideration of generator construction, placement, and dampening materials can reduce the decibel levels a unit produces. Here at Gen-Tech, our careful installation and high-quality products reduce noise levels while producing a reliable energy output.
Sound Attenuation Enclosures to Trap the Sound
Noise control containment is an effective method of reducing engine noise. Before installation, technicians calculate the predicted sound levels, paths, and receivers. This calculation includes ambient noise and structural elements. These calculations are crucial as elements within the field will absorb, reflect, or transmit sound waves.
The installation team uses this information to determine the best design for the sound attenuation enclosure. This includes the choice of steel or aluminum to construct the structure. The team will also determine whether the material should be painted, galvanized, or aluminized. Our sound attenuation enclosures can withstand hurricane force winds and resist corrosion. Each enclosure complies with UL 2200 standards.
The majority of sound attenuation enclosures incorporate a combination of hard surfaces and porous composites. These materials have varying degrees of density. This helps muffle the sound of the generator by converting sound waves into heat. Decibel levels can be further dampened through the use of soft materials. For instance, the use of sound absorbent ceiling panels and carpeting. These non-reflective surfaces are very effective at absorbing and scattering sound waves.
The “Miracle” of Mufflers
Most diesel generators are fitted with a muffler to reduce the noise of engine combustion and blower fans. There are different types of muffler designs. Reactive mufflers are capable of absorbing low-frequency sounds. Absorptive mufflers are more effective at containing high-frequency sounds. Combination mufflers can contain both low and high-frequency sounds. Choosing the right muffler requires considering the flow rate of the unit and the noise spectrum. It is also crucial to determine the expected temperatures and ambient humidity in the area.
Newer Generators are Quieter Generators
Generator technology has advanced at a remarkable rate over the past decade. The implementation of Tier 1 through Tier 4 emissions reduction standards resulted in the development of cleaner, quieter diesel engines.
Small, portable generators can operate at between 50-75 db. This is approximately the same level as a refrigerator or a casual conversation. At the other end of the scale, a fixed diesel generator with an output of 50kW operates at around 85 db. However, the proper design and installation of a sound attenuation enclosure can reduce the noise emitted by more than half.
We understand your desire to keep noise levels to an absolute minimum. We encourage you to contact us to learn more about the sound dampening features our generators offer. It would be our pleasure to discuss the steps we take to reduce generator noise to the lowest possible decibel.