Do Parallel Generators Create More Noise Than Single Units?

Understanding Generator Noise Levels

When considering the noise levels of generators, it’s essential to understand the decibel (dB) scale. A single 5 kW genset might produce around 70 dB of noise, while a parallel setup of two 5 kW gensets could reach up to 75 dB. Although this increase in noise level might seem significant, it’s essential to note that the human ear perceives sound in a logarithmic manner, meaning that a 5 dB increase is roughly equivalent to a doubling of the perceived loudness.

Factors Affecting Parallel Generator Noise

The noise levels of parallel generators can be influenced by several factors, including the type of generators used, the configuration of the parallel kit, and the type of load being powered. For instance, using generators with higher noise levels (e.g., diesel engines) in parallel will naturally result in a louder overall sound. Similarly, loading the generators with high-power appliances will increase the noise levels. To mitigate this, some parallel kit manufacturers offer noise-reducing features, such as sound-absorbing materials or specialized mounts.

Measuring and Reducing Generator Noise

To effectively measure and reduce generator noise, it’s crucial to use calibrated sound level meters. These instruments allow you to accurately measure the decibel levels of your generators and assess the effectiveness of any noise-reducing measures. Some common techniques for reducing generator noise include using noise-reducing materials, such as acoustic blankets or silencers, and implementing proper generator maintenance, such as regular oil changes and filter cleaning. By understanding the factors affecting parallel generator noise and implementing effective noise-reducing strategies, you can minimize the disturbance caused by your gensets.