Numerical and experimental study of absorption of H2O vapor in wavy falling film of LiBr aqueous solution in vertical tubes and in presence of non-absorbables
One of the main reasons for the discrepancies between theoretical predictions of absorption phenomena made by mathematical models when they are compared against experimental results under real conditions, are the presence of non-absorbable gases. It is well known that these non-absorbable gases insi...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/130776 |
| Acceso en línea: | https://hdl.handle.net/2117/130776 https://dx.doi.org/10.1016/j.ijrefrig.2019.01.022 |
| Access Level: | acceso abierto |
| Palabra clave: | Absorption Navier-Stokes equations LiBr Wavy falling film Numerical Experimental Non-absorbables Absorció Equacions de Navier-Stokes Àrees temàtiques de la UPC::Energies::Termoenergètica::Refrigeració |
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Numerical and experimental study of absorption of H2O vapor in wavy falling film of LiBr aqueous solution in vertical tubes and in presence of non-absorbablesGarcía Rivera, EduardoCastro González, Jesús|||0000-0002-8943-2402Farnós Baulenas, Joan|||0000-0003-4749-5138Oliet Casasayas, Carles|||0000-0003-2170-5299AbsorptionNavier-Stokes equationsAbsorptionLiBrWavy falling filmNumericalExperimentalNon-absorbablesAbsorcióEquacions de Navier-StokesÀrees temàtiques de la UPC::Energies::Termoenergètica::RefrigeracióOne of the main reasons for the discrepancies between theoretical predictions of absorption phenomena made by mathematical models when they are compared against experimental results under real conditions, are the presence of non-absorbable gases. It is well known that these non-absorbable gases inside the shell of the absorption chiller are produced mainly for two reasons: (i) air leakages (Oxygen-Nitrogen); (ii) gases produced by corrosion (Hydrogen). In order to evaluate the influence of the presence of non-absorbable gases, an experimental set-up which reproduces vapor absorption in a vertical falling film has been designed and built with a mass spectrometer analyzer. Parallelly, a mathematical model of falling film absorption of H2O by LiBr aqueous solution that considers the influence of non-absorbable gases has been implemented. The model is semi-empirical, based on Navier–Stokes equations together with energy and mass species simplified under the boundary layer hypotheses. Several experimental tests have been performed to determine the influence of the air concentration in the absorption performance. Moreover, a comparison of numerical results against experimental data has been performed under different working conditions with reasonable agreement.Peer ReviewedElsevier20192019-04-0120192019-03-22journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/130776https://dx.doi.org/10.1016/j.ijrefrig.2019.01.022reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1307762026-05-27T15:37:01Z |
| dc.title.none.fl_str_mv |
Numerical and experimental study of absorption of H2O vapor in wavy falling film of LiBr aqueous solution in vertical tubes and in presence of non-absorbables |
| title |
Numerical and experimental study of absorption of H2O vapor in wavy falling film of LiBr aqueous solution in vertical tubes and in presence of non-absorbables |
| spellingShingle |
Numerical and experimental study of absorption of H2O vapor in wavy falling film of LiBr aqueous solution in vertical tubes and in presence of non-absorbables García Rivera, Eduardo Absorption Navier-Stokes equations Absorption LiBr Wavy falling film Numerical Experimental Non-absorbables Absorció Equacions de Navier-Stokes Àrees temàtiques de la UPC::Energies::Termoenergètica::Refrigeració |
| title_short |
Numerical and experimental study of absorption of H2O vapor in wavy falling film of LiBr aqueous solution in vertical tubes and in presence of non-absorbables |
| title_full |
Numerical and experimental study of absorption of H2O vapor in wavy falling film of LiBr aqueous solution in vertical tubes and in presence of non-absorbables |
| title_fullStr |
Numerical and experimental study of absorption of H2O vapor in wavy falling film of LiBr aqueous solution in vertical tubes and in presence of non-absorbables |
| title_full_unstemmed |
Numerical and experimental study of absorption of H2O vapor in wavy falling film of LiBr aqueous solution in vertical tubes and in presence of non-absorbables |
| title_sort |
Numerical and experimental study of absorption of H2O vapor in wavy falling film of LiBr aqueous solution in vertical tubes and in presence of non-absorbables |
| dc.creator.none.fl_str_mv |
García Rivera, Eduardo Castro González, Jesús|||0000-0002-8943-2402 Farnós Baulenas, Joan|||0000-0003-4749-5138 Oliet Casasayas, Carles|||0000-0003-2170-5299 |
| author |
García Rivera, Eduardo |
| author_facet |
García Rivera, Eduardo Castro González, Jesús|||0000-0002-8943-2402 Farnós Baulenas, Joan|||0000-0003-4749-5138 Oliet Casasayas, Carles|||0000-0003-2170-5299 |
| author_role |
author |
| author2 |
Castro González, Jesús|||0000-0002-8943-2402 Farnós Baulenas, Joan|||0000-0003-4749-5138 Oliet Casasayas, Carles|||0000-0003-2170-5299 |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
Absorption Navier-Stokes equations Absorption LiBr Wavy falling film Numerical Experimental Non-absorbables Absorció Equacions de Navier-Stokes Àrees temàtiques de la UPC::Energies::Termoenergètica::Refrigeració |
| topic |
Absorption Navier-Stokes equations Absorption LiBr Wavy falling film Numerical Experimental Non-absorbables Absorció Equacions de Navier-Stokes Àrees temàtiques de la UPC::Energies::Termoenergètica::Refrigeració |
| description |
One of the main reasons for the discrepancies between theoretical predictions of absorption phenomena made by mathematical models when they are compared against experimental results under real conditions, are the presence of non-absorbable gases. It is well known that these non-absorbable gases inside the shell of the absorption chiller are produced mainly for two reasons: (i) air leakages (Oxygen-Nitrogen); (ii) gases produced by corrosion (Hydrogen). In order to evaluate the influence of the presence of non-absorbable gases, an experimental set-up which reproduces vapor absorption in a vertical falling film has been designed and built with a mass spectrometer analyzer. Parallelly, a mathematical model of falling film absorption of H2O by LiBr aqueous solution that considers the influence of non-absorbable gases has been implemented. The model is semi-empirical, based on Navier–Stokes equations together with energy and mass species simplified under the boundary layer hypotheses. Several experimental tests have been performed to determine the influence of the air concentration in the absorption performance. Moreover, a comparison of numerical results against experimental data has been performed under different working conditions with reasonable agreement. |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2019 2019-04-01 2019 2019-03-22 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 AM http://purl.org/coar/version/c_ab4af688f83e57aa |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2117/130776 https://dx.doi.org/10.1016/j.ijrefrig.2019.01.022 |
| url |
https://hdl.handle.net/2117/130776 https://dx.doi.org/10.1016/j.ijrefrig.2019.01.022 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier |
| publisher.none.fl_str_mv |
Elsevier |
| dc.source.none.fl_str_mv |
reponame:UPCommons. Portal del coneixement obert de la UPC instname:Universitat Politècnica de Catalunya (UPC) |
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Universitat Politècnica de Catalunya (UPC) |
| reponame_str |
UPCommons. Portal del coneixement obert de la UPC |
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UPCommons. Portal del coneixement obert de la UPC |
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1869409885800628224 |
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15.300719 |