Work

Noise source identification and sound quality analysis of air-cooled frost-free refrigerator

Year: 2025

Type: article

Abstract: This study investigates noise sources and sound quality characteristics of a high-end air-cooled frost-free refrigerator to guide low-noise design and acoustic optimization. Sound intensity testing identified primary noise sources, revealing that compressor vibration, condenser aerodynamic noise, and condensing fan operation dominate the noise spectrum. Sound quality analysis, conducted using a digital artificial head and psychoacoustic metrics, demonstrated that loudness is influenced by the condensing fan and air-cooling system, sharpness correlates with left-side compressor noise, and fluctuation strength is primarily affected by low-frequency compressor. This integrated approach of noise source identification and sound quality evaluation provides actionable insights for enhancing acoustic performance in air-cooled refrigerators, balancing technical noise reduction with improved user comfort.

Source: Vibroengineering PROCEDIA

DOI: 10.21595/vp.2025.25075

Authors: Fang Li, Weilong Li, Xiaofei Du, Chengxi Li

Institutions: Nanjing Institute of Technology, Southeast University

Language: English

Topic: Vehicle Noise and Vibration Control

Subfield: Automotive Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, Government of Jiangsu Province, Nanjing Institute of Technology

Awards: G3714367392, G5299720662, G7323855550, G8595571666