An Investigation on the Sound Absorption Performance of Granular Molecular Sieves under Room Temperature and Pressure

An Investigation on the Sound Absorption Performance of Granular Molecular Sieves under Room Temperature and Pressure

The sound absorption of granular silica-aluminate molecular sieve pellets was investigated in this paper. The absorption coefficients of molecular sieve pellets with different pore sizes, pellet sizes, and layer thicknesses were measured through impedance tubes under room temperature and pressure co...

Full description

Bibliographic Details
Main Authors: Bing Zhou, Jiangong Zhang, Xin Li, Bilong Liu
Format: Article
Language:English
Published: MDPI AG 2020-04-01
Series:Materials
Subjects:
molecular sieve pellets
sound absorption
impedance tube
Online Access:https://www.mdpi.com/1996-1944/13/8/1936
id doaj-fed52b536436480cb842a58ca928ce0e
record_format Article
spelling doaj-fed52b536436480cb842a58ca928ce0e2020-11-25T03:10:02ZengMDPI AGMaterials1996-19442020-04-01131936193610.3390/ma13081936An Investigation on the Sound Absorption Performance of Granular Molecular Sieves under Room Temperature and PressureBing Zhou0Jiangong Zhang1Xin Li2Bilong Liu3State Key Laboratory of Power Grid Environmental Protection, China Electric Power Research Institute, Wuhan 430074, ChinaState Key Laboratory of Power Grid Environmental Protection, China Electric Power Research Institute, Wuhan 430074, ChinaSchool of Mechanical and Automobile Engineering, Qingdao University of Technology, Qingdao 266520, ChinaSchool of Mechanical and Automobile Engineering, Qingdao University of Technology, Qingdao 266520, ChinaThe sound absorption of granular silica-aluminate molecular sieve pellets was investigated in this paper. The absorption coefficients of molecular sieve pellets with different pore sizes, pellet sizes, and layer thicknesses were measured through impedance tubes under room temperature and pressure conditions. The effects of pore size, pellet size, layer thickness were compared and explained. The comparisons show that at room temperature and pressure, the sound absorption of molecular sieve pellets is not a result of the crystalline structure, but rather it mainly changes with the pellet size and layer thickness. In addition, the five non-acoustical parameters of molecular sieve pellets were obtained by an inverse characterization method based on impedance tube measurements. The measurement by impedance tubes is in good agreement with the calculation of Johnson-Champoux-Allard (JCA) model, proving that the JCA model can be effectively used to predict the sound absorption of molecular sieve pellets.https://www.mdpi.com/1996-1944/13/8/1936molecular sieve pelletssound absorptionimpedance tube
collection DOAJ
language English
format Article
sources DOAJ
author Bing Zhou
Jiangong Zhang
Xin Li
Bilong Liu
spellingShingle Bing Zhou
Jiangong Zhang
Xin Li
Bilong Liu
An Investigation on the Sound Absorption Performance of Granular Molecular Sieves under Room Temperature and Pressure
Materials
molecular sieve pellets
sound absorption
impedance tube
author_facet Bing Zhou
Jiangong Zhang
Xin Li
Bilong Liu
author_sort Bing Zhou
title An Investigation on the Sound Absorption Performance of Granular Molecular Sieves under Room Temperature and Pressure
title_short An Investigation on the Sound Absorption Performance of Granular Molecular Sieves under Room Temperature and Pressure
title_full An Investigation on the Sound Absorption Performance of Granular Molecular Sieves under Room Temperature and Pressure
title_fullStr An Investigation on the Sound Absorption Performance of Granular Molecular Sieves under Room Temperature and Pressure
title_full_unstemmed An Investigation on the Sound Absorption Performance of Granular Molecular Sieves under Room Temperature and Pressure
title_sort investigation on the sound absorption performance of granular molecular sieves under room temperature and pressure
publisher MDPI AG
series Materials
issn 1996-1944
publishDate 2020-04-01
description The sound absorption of granular silica-aluminate molecular sieve pellets was investigated in this paper. The absorption coefficients of molecular sieve pellets with different pore sizes, pellet sizes, and layer thicknesses were measured through impedance tubes under room temperature and pressure conditions. The effects of pore size, pellet size, layer thickness were compared and explained. The comparisons show that at room temperature and pressure, the sound absorption of molecular sieve pellets is not a result of the crystalline structure, but rather it mainly changes with the pellet size and layer thickness. In addition, the five non-acoustical parameters of molecular sieve pellets were obtained by an inverse characterization method based on impedance tube measurements. The measurement by impedance tubes is in good agreement with the calculation of Johnson-Champoux-Allard (JCA) model, proving that the JCA model can be effectively used to predict the sound absorption of molecular sieve pellets.
topic molecular sieve pellets
sound absorption
impedance tube
url https://www.mdpi.com/1996-1944/13/8/1936
work_keys_str_mv AT bingzhou aninvestigationonthesoundabsorptionperformanceofgranularmolecularsievesunderroomtemperatureandpressure
AT jiangongzhang aninvestigationonthesoundabsorptionperformanceofgranularmolecularsievesunderroomtemperatureandpressure
AT xinli aninvestigationonthesoundabsorptionperformanceofgranularmolecularsievesunderroomtemperatureandpressure
AT bilongliu aninvestigationonthesoundabsorptionperformanceofgranularmolecularsievesunderroomtemperatureandpressure
AT bingzhou investigationonthesoundabsorptionperformanceofgranularmolecularsievesunderroomtemperatureandpressure
AT jiangongzhang investigationonthesoundabsorptionperformanceofgranularmolecularsievesunderroomtemperatureandpressure
AT xinli investigationonthesoundabsorptionperformanceofgranularmolecularsievesunderroomtemperatureandpressure
AT bilongliu investigationonthesoundabsorptionperformanceofgranularmolecularsievesunderroomtemperatureandpressure
_version_ 1724661003713511424

Similar Items