Energy Conservation in Absorption Refrigeration Cycles Using DES as a New Generation of Green Absorbents
Deep eutectic solvents (DESs) are emerging green solvents with very unique characteristics. Their contribution to atmospheric pollution is negligible, and they can be “designed” for desired properties. In this study, the feasibility of applying DESs (Reline, Ethaline, or Glyceline) as absorbents in...
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MDPI AG
2020-04-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/22/4/409 |
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| author | Reza Haghbakhsh Hamed Peyrovedin Sona Raeissi Ana Rita C. Duarte Alireza Shariati |
| author_facet | Reza Haghbakhsh Hamed Peyrovedin Sona Raeissi Ana Rita C. Duarte Alireza Shariati |
| author_sort | Reza Haghbakhsh |
| collection | DOAJ |
| description | Deep eutectic solvents (DESs) are emerging green solvents with very unique characteristics. Their contribution to atmospheric pollution is negligible, and they can be “designed” for desired properties. In this study, the feasibility of applying DESs (Reline, Ethaline, or Glyceline) as absorbents in absorption refrigeration cycles was investigated. The sophisticated cubic-plus-association (CPA) equation of state, considering the strong intermolecular interactions of such complex systems, was used to estimate the thermodynamic properties. At a fixed set of base case operating conditions, the coefficients of performance were calculated to be 0.705, 0.713, and 0.716 for Reline/water, Ethaline/water, and Glyceline/water systems, respectively, while the corresponding mass flow rate ratios were 33.73, 11.53, and 16.06, respectively. Furthermore, the optimum operating conditions of each system were estimated. To verify the feasibility, results were compared to literature systems, including LiBr/water and various ionic liquid/water systems. The results indicate that DES/water working fluids have the potential to be used in such cycles. Since DESs have the characteristic to be tuned (designed) to desired properties, including their solvent power and their enthalpies of absorption, much further research needs to be done to propose new DESs with higher energy efficiencies. |
| first_indexed | 2024-03-10T20:42:07Z |
| format | Article |
| id | doaj.art-8cc8a8faa3494a78a1047e5ece78da05 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-10T20:42:07Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
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| series | Entropy |
| spelling | doaj.art-8cc8a8faa3494a78a1047e5ece78da052023-11-19T20:36:13ZengMDPI AGEntropy1099-43002020-04-0122440910.3390/e22040409Energy Conservation in Absorption Refrigeration Cycles Using DES as a New Generation of Green AbsorbentsReza Haghbakhsh0Hamed Peyrovedin1Sona Raeissi2Ana Rita C. Duarte3Alireza Shariati4School of Chemical and Petroleum Engineering, Shiraz University, Mollasadra Ave., Shiraz 71348-51154, IranSchool of Chemical and Petroleum Engineering, Shiraz University, Mollasadra Ave., Shiraz 71348-51154, IranSchool of Chemical and Petroleum Engineering, Shiraz University, Mollasadra Ave., Shiraz 71348-51154, IranLAQV, REQUIMTE, Departamento de Química da Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, PortugalSchool of Chemical and Petroleum Engineering, Shiraz University, Mollasadra Ave., Shiraz 71348-51154, IranDeep eutectic solvents (DESs) are emerging green solvents with very unique characteristics. Their contribution to atmospheric pollution is negligible, and they can be “designed” for desired properties. In this study, the feasibility of applying DESs (Reline, Ethaline, or Glyceline) as absorbents in absorption refrigeration cycles was investigated. The sophisticated cubic-plus-association (CPA) equation of state, considering the strong intermolecular interactions of such complex systems, was used to estimate the thermodynamic properties. At a fixed set of base case operating conditions, the coefficients of performance were calculated to be 0.705, 0.713, and 0.716 for Reline/water, Ethaline/water, and Glyceline/water systems, respectively, while the corresponding mass flow rate ratios were 33.73, 11.53, and 16.06, respectively. Furthermore, the optimum operating conditions of each system were estimated. To verify the feasibility, results were compared to literature systems, including LiBr/water and various ionic liquid/water systems. The results indicate that DES/water working fluids have the potential to be used in such cycles. Since DESs have the characteristic to be tuned (designed) to desired properties, including their solvent power and their enthalpies of absorption, much further research needs to be done to propose new DESs with higher energy efficiencies.https://www.mdpi.com/1099-4300/22/4/409green solventnovel solventdeep eutectic solventsenergyrefrigerationCPA |
| spellingShingle | Reza Haghbakhsh Hamed Peyrovedin Sona Raeissi Ana Rita C. Duarte Alireza Shariati Energy Conservation in Absorption Refrigeration Cycles Using DES as a New Generation of Green Absorbents Entropy green solvent novel solvent deep eutectic solvents energy refrigeration CPA |
| title | Energy Conservation in Absorption Refrigeration Cycles Using DES as a New Generation of Green Absorbents |
| title_full | Energy Conservation in Absorption Refrigeration Cycles Using DES as a New Generation of Green Absorbents |
| title_fullStr | Energy Conservation in Absorption Refrigeration Cycles Using DES as a New Generation of Green Absorbents |
| title_full_unstemmed | Energy Conservation in Absorption Refrigeration Cycles Using DES as a New Generation of Green Absorbents |
| title_short | Energy Conservation in Absorption Refrigeration Cycles Using DES as a New Generation of Green Absorbents |
| title_sort | energy conservation in absorption refrigeration cycles using des as a new generation of green absorbents |
| topic | green solvent novel solvent deep eutectic solvents energy refrigeration CPA |
| url | https://www.mdpi.com/1099-4300/22/4/409 |
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