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Analysis of indirect evaporative cooler performance under various heat and mass exchanger dimensions and flow parameters.

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Title: Analysis of indirect evaporative cooler performance under various heat and mass exchanger dimensions and flow parameters.
Authors: Adam, Abdalazeem1,2 (AUTHOR) kdadao9@hotmail.com, Han, Dong1 (AUTHOR) handong@nuaa.edu.cn, He, Weifeng1 (AUTHOR) wfhe@nuaa.edu.cn, Amidpour, Majid3 (AUTHOR)
Source: International Journal of Heat & Mass Transfer. Sep2021, Vol. 176, pN.PAG-N.PAG. 1p.
Subjects: Heat exchangers, Heat transfer, Atmospheric temperature, Mass transfer, Mathematical models, Velocity
Abstract: • The desirable operating conditions to achieve high operational efficiency are obtained. • The performance of the IEC under different operating conditions is investigated. • The mathematical model is validated against published data. • The optimal dimensions that give good efficiency in climates with moderate humidity are highlighted. [Display omitted] This paper presents a study investigating and analyzing the effect of heat and mass exchanger (HMX) dimensions and the flow parameters on the indirect evaporative cooler (IEC) system's performance. For this purpose, a mathematical model based on heat and mass transfer concepts was developed, and the model was verified using experimental and simulation results from published papers. Simulations were performed based on different operating and structural conditions affecting the outlet air temperature, cooling capacity, coefficient of performance, and wet-bulb efficiency. Results showed that the optimal dimensions that give good efficiency in climates with moderate humidity, the length of the duct should be between 0.6 to 1.0 m , the width of the channel between 0.3 to 0.5 m , and the channel gap between 0.004 to 0.008 m. It has also been observed that the increasing working air velocity has a positive effect on cooling performance, and its velocity should not be less than 1 m / s. As for increasing the product air velocity, it reduces the heat exchange period, which is undesirable, so it should not exceed 1 m / s. The prescribed flow rate ratio between product and working air should be 0.3 to 0.5. This analysis provides desirable operating conditions to achieve high operational efficiency as well as optimal dimensions for designing such a cooler. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 150969722
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Analysis of indirect evaporative cooler performance under various heat and mass exchanger dimensions and flow parameters.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Adam%2C+Abdalazeem%22">Adam, Abdalazeem</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> kdadao9@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Han%2C+Dong%22">Han, Dong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> handong@nuaa.edu.cn</i><br /><searchLink fieldCode="AR" term="%22He%2C+Weifeng%22">He, Weifeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wfhe@nuaa.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Amidpour%2C+Majid%22">Amidpour, Majid</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Heat+%26+Mass+Transfer%22">International Journal of Heat & Mass Transfer</searchLink>. Sep2021, Vol. 176, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Heat+exchangers%22">Heat exchangers</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+transfer%22">Heat transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+temperature%22">Atmospheric temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Mass+transfer%22">Mass transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+models%22">Mathematical models</searchLink><br /><searchLink fieldCode="DE" term="%22Velocity%22">Velocity</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • The desirable operating conditions to achieve high operational efficiency are obtained. • The performance of the IEC under different operating conditions is investigated. • The mathematical model is validated against published data. • The optimal dimensions that give good efficiency in climates with moderate humidity are highlighted. [Display omitted] This paper presents a study investigating and analyzing the effect of heat and mass exchanger (HMX) dimensions and the flow parameters on the indirect evaporative cooler (IEC) system's performance. For this purpose, a mathematical model based on heat and mass transfer concepts was developed, and the model was verified using experimental and simulation results from published papers. Simulations were performed based on different operating and structural conditions affecting the outlet air temperature, cooling capacity, coefficient of performance, and wet-bulb efficiency. Results showed that the optimal dimensions that give good efficiency in climates with moderate humidity, the length of the duct should be between 0.6 to 1.0 m , the width of the channel between 0.3 to 0.5 m , and the channel gap between 0.004 to 0.008 m. It has also been observed that the increasing working air velocity has a positive effect on cooling performance, and its velocity should not be less than 1 m / s. As for increasing the product air velocity, it reduces the heat exchange period, which is undesirable, so it should not exceed 1 m / s. The prescribed flow rate ratio between product and working air should be 0.3 to 0.5. This analysis provides desirable operating conditions to achieve high operational efficiency as well as optimal dimensions for designing such a cooler. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.ijheatmasstransfer.2021.121299
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Heat exchangers
        Type: general
      – SubjectFull: Heat transfer
        Type: general
      – SubjectFull: Atmospheric temperature
        Type: general
      – SubjectFull: Mass transfer
        Type: general
      – SubjectFull: Mathematical models
        Type: general
      – SubjectFull: Velocity
        Type: general
    Titles:
      – TitleFull: Analysis of indirect evaporative cooler performance under various heat and mass exchanger dimensions and flow parameters.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Adam, Abdalazeem
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          Name:
            NameFull: Han, Dong
      – PersonEntity:
          Name:
            NameFull: He, Weifeng
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          Name:
            NameFull: Amidpour, Majid
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          Dates:
            – D: 01
              M: 09
              Text: Sep2021
              Type: published
              Y: 2021
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            – Type: issn-print
              Value: 00179310
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              Value: 176
          Titles:
            – TitleFull: International Journal of Heat & Mass Transfer
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