Noise Elimination of Reciprocating Compressors Using FEM, Neural Networks Method, and the GA Method

Industry often utilizes acoustical hoods to block noise emitted from reciprocating compressors. How-ever, the hoods are large and bulky. Therefore, to diminish the size of the compressor, a compact discharge muffler linked to the compressor outlet is considered. Because the geometry of a reciprocati...

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Bibliographic Details
Published in:Archives of acoustics 2017-06, Vol.42 (2), p.189-197
Main Authors: Chang, Ying-Chun, Chiu, Min-Chie, Xie, Ji-Lin
Format: Article
Language:English
Subjects:
Abatement
Acoustic emission
Acoustic noise
Artificial neural networks
Commercialization
Finite element method
genetic algorithm
Genetic algorithms
group method of data handling
Mathematical analysis
Mathematical models
Neural networks
Noise control
optimization
polynomial neural network model
reciprocating compressor
Reciprocating compressors
Shape optimization
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Summary:Industry often utilizes acoustical hoods to block noise emitted from reciprocating compressors. How-ever, the hoods are large and bulky. Therefore, to diminish the size of the compressor, a compact discharge muffler linked to the compressor outlet is considered. Because the geometry of a reciprocating compressor is irregular, COMSOL, a finite element analysis software, is adopted. In order to explore the acoustical performance, a mathematical model is established using a finite element method via the COMSOL commercialized package. Additionally, to facilitate the shape optimization of the muffler, a polynomial neural network model is adopted to serve as an objective function; also, a Genetic Algorithm (GA) is linked to the OBJ function. During the optimization, various noise abatement strategies such as a reverse expansion chamber at the outlet of the discharge muffler and an inner extended tube inside the discharge muffler, will be assessed by using the artificial neural network in conjunction with the GA optimizer. Consequently, the discharge muffler that is optimally shaped will decrease the noise of the reciprocating compressor.
ISSN:2300-262X
0137-5075
2300-262X
DOI:10.1515/aoa-2017-0021