New portable hybrid method of compressor noise level calculation from vibrations measurements

摘要

The air conditioning and refrigeration systems noise consideration is continuously growing, implying more and more compressor noise measurements [1], even in-situ [2][3].This article will introduce a new validated finite-element method to obtain the compressor noise from vibration measurements from standard test rig or directly in the field.We will describe the methodology; the devices & tools used for the analysis, their implementation, and we will compare the results to standardized measurements made on a refrigerant hermetic scroll moto-compressor in an acoustic room.Additional investigation benefits will be put forward, as frequency noise peaks identification and noise spatial mapping on the compressor shell.