Noise spectral characteristics and control strategy of outdoor HVAC equipment

While the HVAC system provides a comfortable artificial environment for people, the noise also affects people’s quality of work and life, which leads to many social contradictions. Based on the field-measured acoustic data of typical outdoor HVAC equipment, combined with investigation, theoretical calculation and acoustic simulation, this paper summarizes the noise spectrum characteristics and propagation rules of typical outdoor HVAC equipment. Based on the basic principles of acoustics, a noise control strategy is proposed that integrates sound insulation, sound absorption, sound reduction and vibration isolation to achieve accurate and efficient noise reduction.