AustralieFrV1, Istex, Corpus, bibRecord, 001A74

Frequency response analysis of a closed diffusion cell with two resonators

Identifieur interne : 001A74 ( Istex/Corpus ); précédent : 001A73; suivant : 001A75

Frequency response analysis of a closed diffusion cell with two resonators

Auteurs : L. M. Sun ; D. D. Do

Source :

Adsorption [ 0929-5607 ] ; 1996-10-01.

RBID : ISTEX:8D90D3C82ABE7E12531C1AA6F04F9B5C7C42AD02

English descriptors

KwdEn :
- Adsorbent particles, Adsorber, Adsorption, Amplitude, Batch adsorber, Biporous, Biporous pellet, Biporous pellets, Chem, Concentration response, Concentration responses, Different values, Differential concentration, Differential pressure, Differential response, Diffusion cell, Diffusion cell system, Diffusional resistances, Equilibrium values, Frequency increases, Frequency response, Frequency response method, Heat effect, Heat transfer, High frequencies, Homogeneous particle, Identical reservoirs, Macropore, Macropore diffusion, Mass balance, Mass transfer, Micropore, Micropore diffusion, Other hand, Particle temperature, Pellet, Perturbation, Phase angle, Phase angles, Phase concentration, Phase concentrations, Phase delay, Phase perturbation, Phase perturbations, Porous particle, Pressure difference, Pressure response, Previous paper, Relative amplitude, Relative amplitudes, Reservoir, Resonator, Resonator system, Same frequency, Single resonator, Single resonator diffusion cell, Total amount, Traditional batch adsorber, Volume perturbation, Volume perturbations.
Teeft :
- Adsorbent particles, Adsorber, Adsorption, Amplitude, Batch adsorber, Biporous, Biporous pellet, Biporous pellets, Chem, Concentration response, Concentration responses, Different values, Differential concentration, Differential pressure, Differential response, Diffusion cell, Diffusion cell system, Diffusional resistances, Equilibrium values, Frequency increases, Frequency response, Frequency response method, Heat effect, Heat transfer, High frequencies, Homogeneous particle, Identical reservoirs, Macropore, Macropore diffusion, Mass balance, Mass transfer, Micropore, Micropore diffusion, Other hand, Particle temperature, Pellet, Perturbation, Phase angle, Phase angles, Phase concentration, Phase concentrations, Phase delay, Phase perturbation, Phase perturbations, Porous particle, Pressure difference, Pressure response, Previous paper, Relative amplitude, Relative amplitudes, Reservoir, Resonator, Resonator system, Same frequency, Single resonator, Single resonator diffusion cell, Total amount, Traditional batch adsorber, Volume perturbation, Volume perturbations.

Abstract

Abstract: This paper deals with frequency response (FR) analysis of a closed diffusion cell system with two resonators, that is both the LHS and RHS volumes are modulated. The analysis is made for a homogeneous particle described by a single effective diffusivity as well as a biporous pellet described by macropore and micropore diffusions. It is shown that if the perturbation of the volume of the reservoir #2 is lagged behind that of the reservoir #1 by 3π/2, the pressure response in reservoir #1 is significantly enhanced with larger amplitude as well as phase angle. When the perturbations of the two reservoirs are out of phase, the heat effect is reduced and can become insignificant when the two perturbations are completely out of phase (ψ = π). Under such a condition, the pressure difference between the two reservoirs could be doubled. In the case of biporous pellets, it is shown that the FR behaviours obtained for micropore diffusion control and macropore diffusion control are well distinguished. In the former case, the FR system reduces to a traditional batch adsorber one while in the latter case, the FR behaviour is the same as for a two resonator system with homogeneous particles. This difference can be used for the discrimination of micropore and macropore diffusion processes.

Url:

https://api.istex.fr/document/8D90D3C82ABE7E12531C1AA6F04F9B5C7C42AD02/fulltext/pdf

DOI: 10.1007/BF00879541

Links to Exploration step

ISTEX:8D90D3C82ABE7E12531C1AA6F04F9B5C7C42AD02

Le document en format XML

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<abstract xml:lang="en"><p>Abstract: This paper deals with frequency response (FR) analysis of a closed diffusion cell system with two resonators, that is both the LHS and RHS volumes are modulated. The analysis is made for a homogeneous particle described by a single effective diffusivity as well as a biporous pellet described by macropore and micropore diffusions. It is shown that if the perturbation of the volume of the reservoir #2 is lagged behind that of the reservoir #1 by 3π/2, the pressure response in reservoir #1 is significantly enhanced with larger amplitude as well as phase angle. When the perturbations of the two reservoirs are out of phase, the heat effect is reduced and can become insignificant when the two perturbations are completely out of phase (ψ = π). Under such a condition, the pressure difference between the two reservoirs could be doubled. In the case of biporous pellets, it is shown that the FR behaviours obtained for micropore diffusion control and macropore diffusion control are well distinguished. In the former case, the FR system reduces to a traditional batch adsorber one while in the latter case, the FR behaviour is the same as for a two resonator system with homogeneous particles. This difference can be used for the discrimination of micropore and macropore diffusion processes.</p>
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<abstract lang="en">Abstract: This paper deals with frequency response (FR) analysis of a closed diffusion cell system with two resonators, that is both the LHS and RHS volumes are modulated. The analysis is made for a homogeneous particle described by a single effective diffusivity as well as a biporous pellet described by macropore and micropore diffusions. It is shown that if the perturbation of the volume of the reservoir #2 is lagged behind that of the reservoir #1 by 3π/2, the pressure response in reservoir #1 is significantly enhanced with larger amplitude as well as phase angle. When the perturbations of the two reservoirs are out of phase, the heat effect is reduced and can become insignificant when the two perturbations are completely out of phase (ψ = π). Under such a condition, the pressure difference between the two reservoirs could be doubled. In the case of biporous pellets, it is shown that the FR behaviours obtained for micropore diffusion control and macropore diffusion control are well distinguished. In the former case, the FR system reduces to a traditional batch adsorber one while in the latter case, the FR behaviour is the same as for a two resonator system with homogeneous particles. This difference can be used for the discrimination of micropore and macropore diffusion processes.</abstract>
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Frequency response analysis of a closed diffusion cell with two resonators

Frequency response analysis of a closed diffusion cell with two resonators

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