Acoustic Analysis of the Compressor and Measurement of Acoustic Properties of Materials

• Main Authors: Po-Hao Chen, 陳柏豪
• Other Authors: Yi-Mei Huang
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/w6vdv4

碩士 === 國立中央大學 === 機械工程學系 === 106 === This research focused on the design of the muffler in a rotary compressor. A finite element software, ANSYS Acoustic ACTx R15.0, was used to provide the simulation results. The simulation was divided into two parts. First, the sound field covered only the interior of the muffler. Secondly, the sound field was expanded to the inner space within the compressor. Expanding the simulation space of sound gave different results from the simulation of the muffler. The reduction effects of sound with different designs of mufflers are then compared by examining the values of performance index which is defined as the sum of inner pressures on the compressor’s shell. Beside simulation work, this thesis also presents the design of an impedance tube for measuring acoustic properties of materials, including sound absorbing materials used in compressors.