Integrated Design of Working Fluid Mixtures and Absorption Refrigeration Cycles
<p dir="ltr">This work presents a CAMD (computer-aided molecular design) approach for the design of working fluid mixtures used in ABR (absorption refrigeration) cycles. Compared to previous works, the proposed approach introduces two major improvements. It employs for the first time...
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2021
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| _version_ | 1864513512392359936 |
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| author | Athanasios I. Papadopoulos (1919008) |
| author2 | Alexios-Spyridon Kyriakides (10538807) Panos Seferlis (1919002) Ibrahim Hassan (225257) |
| author2_role | author author author |
| author_facet | Athanasios I. Papadopoulos (1919008) Alexios-Spyridon Kyriakides (10538807) Panos Seferlis (1919002) Ibrahim Hassan (225257) |
| author_role | author |
| dc.creator.none.fl_str_mv | Athanasios I. Papadopoulos (1919008) Alexios-Spyridon Kyriakides (10538807) Panos Seferlis (1919002) Ibrahim Hassan (225257) |
| dc.date.none.fl_str_mv | 2021-04-08T03:00:00Z |
| dc.identifier.none.fl_str_mv | 10.3389/fceng.2021.622998 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Integrated_Design_of_Working_Fluid_Mixtures_and_Absorption_Refrigeration_Cycles/26095666 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Chemical engineering Fluid mechanics and thermal engineering molecular design absorption refrigeration multicriteria assessment working fluids CAMD |
| dc.title.none.fl_str_mv | Integrated Design of Working Fluid Mixtures and Absorption Refrigeration Cycles |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">This work presents a CAMD (computer-aided molecular design) approach for the design of working fluid mixtures used in ABR (absorption refrigeration) cycles. Compared to previous works, the proposed approach introduces two major improvements. It employs for the first time an ABR process model in the course of CAMD, hence enabling the evaluation of the generated mixtures considering process performance indicators. It enables for the first time the simultaneous generation and evaluation of molecular structures for both refrigerants and absorbents. The employed model and CAMD optimization problem formulation incorporates major ABR operational driving forces pertaining to efficient refrigeration, sufficient solubility of mixture components and ease of separation in the generator. The approach employs a multicriteria assessment methodology both during CAMD and for the evaluation of selected mixtures using a more rigorous ABR model at a second stage. The work identifies novel mixtures, with Acetaldehyde/2-Methoxyethyl acetate and Acetaldehyde/Methanediol exhibiting the highest performance. The latter exhibits 3% higher COP (coefficient of performance) and cooling output than the reference mixture NH<sub>3</sub>/H<sub>2</sub>O, whereas it operates at 87 and 89% lower high and low cycle pressures. The novel mixtures are also compared with novel mixtures previously identified through a heuristic approach by the authors. The latter mixtures indicate overall higher ABR performance but similar or worse performance in safety, health and environmental impact indices. Further performance improvements may be achieved by including into CAMD additional chemical groups to be able to simulate the complex absorbent structures available in published works.</p><h2>Other Information</h2><p dir="ltr">Published in: Frontiers in Chemical Engineering<br>License: <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.3389/fceng.2021.622998" target="_blank">https://dx.doi.org/10.3389/fceng.2021.622998</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_9f8dbf0c0420dc4dc9035fe1f7227de8 |
| identifier_str_mv | 10.3389/fceng.2021.622998 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/26095666 |
| publishDate | 2021 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Integrated Design of Working Fluid Mixtures and Absorption Refrigeration CyclesAthanasios I. Papadopoulos (1919008)Alexios-Spyridon Kyriakides (10538807)Panos Seferlis (1919002)Ibrahim Hassan (225257)EngineeringChemical engineeringFluid mechanics and thermal engineeringmolecular designabsorption refrigerationmulticriteria assessmentworking fluidsCAMD<p dir="ltr">This work presents a CAMD (computer-aided molecular design) approach for the design of working fluid mixtures used in ABR (absorption refrigeration) cycles. Compared to previous works, the proposed approach introduces two major improvements. It employs for the first time an ABR process model in the course of CAMD, hence enabling the evaluation of the generated mixtures considering process performance indicators. It enables for the first time the simultaneous generation and evaluation of molecular structures for both refrigerants and absorbents. The employed model and CAMD optimization problem formulation incorporates major ABR operational driving forces pertaining to efficient refrigeration, sufficient solubility of mixture components and ease of separation in the generator. The approach employs a multicriteria assessment methodology both during CAMD and for the evaluation of selected mixtures using a more rigorous ABR model at a second stage. The work identifies novel mixtures, with Acetaldehyde/2-Methoxyethyl acetate and Acetaldehyde/Methanediol exhibiting the highest performance. The latter exhibits 3% higher COP (coefficient of performance) and cooling output than the reference mixture NH<sub>3</sub>/H<sub>2</sub>O, whereas it operates at 87 and 89% lower high and low cycle pressures. The novel mixtures are also compared with novel mixtures previously identified through a heuristic approach by the authors. The latter mixtures indicate overall higher ABR performance but similar or worse performance in safety, health and environmental impact indices. Further performance improvements may be achieved by including into CAMD additional chemical groups to be able to simulate the complex absorbent structures available in published works.</p><h2>Other Information</h2><p dir="ltr">Published in: Frontiers in Chemical Engineering<br>License: <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.3389/fceng.2021.622998" target="_blank">https://dx.doi.org/10.3389/fceng.2021.622998</a></p>2021-04-08T03:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.3389/fceng.2021.622998https://figshare.com/articles/journal_contribution/Integrated_Design_of_Working_Fluid_Mixtures_and_Absorption_Refrigeration_Cycles/26095666CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/260956662021-04-08T03:00:00Z |
| spellingShingle | Integrated Design of Working Fluid Mixtures and Absorption Refrigeration Cycles Athanasios I. Papadopoulos (1919008) Engineering Chemical engineering Fluid mechanics and thermal engineering molecular design absorption refrigeration multicriteria assessment working fluids CAMD |
| status_str | publishedVersion |
| title | Integrated Design of Working Fluid Mixtures and Absorption Refrigeration Cycles |
| title_full | Integrated Design of Working Fluid Mixtures and Absorption Refrigeration Cycles |
| title_fullStr | Integrated Design of Working Fluid Mixtures and Absorption Refrigeration Cycles |
| title_full_unstemmed | Integrated Design of Working Fluid Mixtures and Absorption Refrigeration Cycles |
| title_short | Integrated Design of Working Fluid Mixtures and Absorption Refrigeration Cycles |
| title_sort | Integrated Design of Working Fluid Mixtures and Absorption Refrigeration Cycles |
| topic | Engineering Chemical engineering Fluid mechanics and thermal engineering molecular design absorption refrigeration multicriteria assessment working fluids CAMD |