Numerical analysis of O2 concentration, gas-zeolite temperatures in two zeolite columns for an oxygen concentrator

Kuniyasu Ogawa, Yosuke Inagaki, Akio Ohno

Research output: Contribution to journalArticle

Abstract

In order to improve the performance of a compact adsorption-type oxygen concentrator, it is necessary to develop an analytical method for a compact concentrator having two zeolite columns of 15–30 cm length. A method which computes the velocity of gas flowing through the zeolite column was developed by assuming that the total gas pressure over the entire area of the column is spatially uniform during pressure swing adsorption (PSA) operation. The energy conservation equation for gas includes flow work and gas enthalpy transport which occurs when gas adsorbs/desorbs at a surface of a zeolite particle. Spatial distributions of gas velocity, oxygen concentration, and gas-zeolite temperatures were analyzed numerically using these equations. The numerical results of the time dependent changes in the discharged oxygen concentration and the temperature distribution of the zeolite column were in agreement with experiment.

LanguageEnglish
Pages238-254
Number of pages17
JournalInternational Journal of Heat and Mass Transfer
Volume129
DOIs
Publication statusPublished - 2019 Feb 1

Fingerprint

Zeolites
concentrators
gas temperature
numerical analysis
Numerical analysis
Gases
Oxygen
oxygen
gases
Temperature
adsorption
conservation equations
energy conservation
gas pressure
gas flow
Adsorption
spatial distribution
temperature distribution
enthalpy
Spatial distribution

Keywords

  • Adsorption
  • Gas separation
  • Modeling
  • Numerical analysis
  • Temperature distribution

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Numerical analysis of O2 concentration, gas-zeolite temperatures in two zeolite columns for an oxygen concentrator. / Ogawa, Kuniyasu; Inagaki, Yosuke; Ohno, Akio.

In: International Journal of Heat and Mass Transfer, Vol. 129, 01.02.2019, p. 238-254.

Research output: Contribution to journalArticle

@article{ae7e7b1370004d11a9c5bf93fd4929ea,
title = "Numerical analysis of O2 concentration, gas-zeolite temperatures in two zeolite columns for an oxygen concentrator",
abstract = "In order to improve the performance of a compact adsorption-type oxygen concentrator, it is necessary to develop an analytical method for a compact concentrator having two zeolite columns of 15–30 cm length. A method which computes the velocity of gas flowing through the zeolite column was developed by assuming that the total gas pressure over the entire area of the column is spatially uniform during pressure swing adsorption (PSA) operation. The energy conservation equation for gas includes flow work and gas enthalpy transport which occurs when gas adsorbs/desorbs at a surface of a zeolite particle. Spatial distributions of gas velocity, oxygen concentration, and gas-zeolite temperatures were analyzed numerically using these equations. The numerical results of the time dependent changes in the discharged oxygen concentration and the temperature distribution of the zeolite column were in agreement with experiment.",
keywords = "Adsorption, Gas separation, Modeling, Numerical analysis, Temperature distribution",
author = "Kuniyasu Ogawa and Yosuke Inagaki and Akio Ohno",
year = "2019",
month = "2",
day = "1",
doi = "10.1016/j.ijheatmasstransfer.2018.09.052",
language = "English",
volume = "129",
pages = "238--254",
journal = "International Journal of Heat and Mass Transfer",
issn = "0017-9310",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Numerical analysis of O2 concentration, gas-zeolite temperatures in two zeolite columns for an oxygen concentrator

AU - Ogawa, Kuniyasu

AU - Inagaki, Yosuke

AU - Ohno, Akio

PY - 2019/2/1

Y1 - 2019/2/1

N2 - In order to improve the performance of a compact adsorption-type oxygen concentrator, it is necessary to develop an analytical method for a compact concentrator having two zeolite columns of 15–30 cm length. A method which computes the velocity of gas flowing through the zeolite column was developed by assuming that the total gas pressure over the entire area of the column is spatially uniform during pressure swing adsorption (PSA) operation. The energy conservation equation for gas includes flow work and gas enthalpy transport which occurs when gas adsorbs/desorbs at a surface of a zeolite particle. Spatial distributions of gas velocity, oxygen concentration, and gas-zeolite temperatures were analyzed numerically using these equations. The numerical results of the time dependent changes in the discharged oxygen concentration and the temperature distribution of the zeolite column were in agreement with experiment.

AB - In order to improve the performance of a compact adsorption-type oxygen concentrator, it is necessary to develop an analytical method for a compact concentrator having two zeolite columns of 15–30 cm length. A method which computes the velocity of gas flowing through the zeolite column was developed by assuming that the total gas pressure over the entire area of the column is spatially uniform during pressure swing adsorption (PSA) operation. The energy conservation equation for gas includes flow work and gas enthalpy transport which occurs when gas adsorbs/desorbs at a surface of a zeolite particle. Spatial distributions of gas velocity, oxygen concentration, and gas-zeolite temperatures were analyzed numerically using these equations. The numerical results of the time dependent changes in the discharged oxygen concentration and the temperature distribution of the zeolite column were in agreement with experiment.

KW - Adsorption

KW - Gas separation

KW - Modeling

KW - Numerical analysis

KW - Temperature distribution

UR - http://www.scopus.com/inward/record.url?scp=85054008010&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85054008010&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2018.09.052

DO - 10.1016/j.ijheatmasstransfer.2018.09.052

M3 - Article

VL - 129

SP - 238

EP - 254

JO - International Journal of Heat and Mass Transfer

T2 - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

SN - 0017-9310

ER -