Solution of the Environmental Noise Problem Generated by HVAC Systems—Case Study

Modern buildings, shopping malls, and supermarkets nowadays rely on centralized systems to maintain the optimal air and water temperature. These units often placed in the open areas affect the environment by generating a significant amount of noise which influences acoustical comfort in residential areas, and reduces the productivity of the people working in nearby office buildings. The main engineering challenge in performing the noise control of heating/cooling units is that a significant amount of air has to be provided for its subsystem cooling, while at the same time noise must attenuate. Here, a practical approach based on the simulation is investigated, noise reduction system implemented and results observed. Combination of the custom made adsorption elements and the chosen geometry based on simulations showed the promising results that can be applied to various types of HVAC systems.