Performance Investigation of a Hollow Fiber Membrane-Based Desiccant Liquid Air Dehumidification System
The membrane-based desiccant liquid air dehumidification system is a promising technology for efficient humidity control in buildings. The use of a membrane module allows, among other things, for a compact design with a relatively large heat and mass transfer area and eliminates carryover of solutio...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/11/3320 |
| _version_ | 1797531229187211264 |
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| author | Sebastian Englart Krzysztof Rajski |
| author_facet | Sebastian Englart Krzysztof Rajski |
| author_sort | Sebastian Englart |
| collection | DOAJ |
| description | The membrane-based desiccant liquid air dehumidification system is a promising technology for efficient humidity control in buildings. The use of a membrane module allows, among other things, for a compact design with a relatively large heat and mass transfer area and eliminates carryover of solution droplets. In this paper, a cross-flow, hollow-fiber membrane module was proposed for air dehumidification and regeneration of lithium chloride. A two-dimensional heat and mass transfer model for cross-flow in a membrane module used for air dehumidification and liquid desiccant regeneration was developed. The effectiveness, moisture removal rate and moisture removal rate were studied numerically and validated against experimental results. Based on the numerical simulations, the most favorable ranges of operating conditions were determined. It was found that the operating conditions significantly impact the dehumidification performance. The proposed dehumidifier maintains its performance in a wide range of inlet air humidity ratios. For dehumidification, the recommended temperature of the incoming solution was in the range of 14–18 °C, while for regeneration the solution range was 40–50 °C. The packing fraction was suggested in the range of 0.30–0.40. These results can help design membrane-based liquid dehumidification systems. |
| first_indexed | 2024-03-10T10:40:52Z |
| format | Article |
| id | doaj.art-428f9d02c80b413393d02a5af85175a5 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T10:40:52Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-428f9d02c80b413393d02a5af85175a52023-11-21T22:55:11ZengMDPI AGEnergies1996-10732021-06-011411332010.3390/en14113320Performance Investigation of a Hollow Fiber Membrane-Based Desiccant Liquid Air Dehumidification SystemSebastian Englart0Krzysztof Rajski1Faculty of Environmental Engineering, Wrocław University of Science and Technology, PL50377 Wrocław, PolandFaculty of Environmental Engineering, Wrocław University of Science and Technology, PL50377 Wrocław, PolandThe membrane-based desiccant liquid air dehumidification system is a promising technology for efficient humidity control in buildings. The use of a membrane module allows, among other things, for a compact design with a relatively large heat and mass transfer area and eliminates carryover of solution droplets. In this paper, a cross-flow, hollow-fiber membrane module was proposed for air dehumidification and regeneration of lithium chloride. A two-dimensional heat and mass transfer model for cross-flow in a membrane module used for air dehumidification and liquid desiccant regeneration was developed. The effectiveness, moisture removal rate and moisture removal rate were studied numerically and validated against experimental results. Based on the numerical simulations, the most favorable ranges of operating conditions were determined. It was found that the operating conditions significantly impact the dehumidification performance. The proposed dehumidifier maintains its performance in a wide range of inlet air humidity ratios. For dehumidification, the recommended temperature of the incoming solution was in the range of 14–18 °C, while for regeneration the solution range was 40–50 °C. The packing fraction was suggested in the range of 0.30–0.40. These results can help design membrane-based liquid dehumidification systems.https://www.mdpi.com/1996-1073/14/11/3320dehumidifierregeneratormass transferheat transferhollow fibermathematical model |
| spellingShingle | Sebastian Englart Krzysztof Rajski Performance Investigation of a Hollow Fiber Membrane-Based Desiccant Liquid Air Dehumidification System Energies dehumidifier regenerator mass transfer heat transfer hollow fiber mathematical model |
| title | Performance Investigation of a Hollow Fiber Membrane-Based Desiccant Liquid Air Dehumidification System |
| title_full | Performance Investigation of a Hollow Fiber Membrane-Based Desiccant Liquid Air Dehumidification System |
| title_fullStr | Performance Investigation of a Hollow Fiber Membrane-Based Desiccant Liquid Air Dehumidification System |
| title_full_unstemmed | Performance Investigation of a Hollow Fiber Membrane-Based Desiccant Liquid Air Dehumidification System |
| title_short | Performance Investigation of a Hollow Fiber Membrane-Based Desiccant Liquid Air Dehumidification System |
| title_sort | performance investigation of a hollow fiber membrane based desiccant liquid air dehumidification system |
| topic | dehumidifier regenerator mass transfer heat transfer hollow fiber mathematical model |
| url | https://www.mdpi.com/1996-1073/14/11/3320 |
| work_keys_str_mv | AT sebastianenglart performanceinvestigationofahollowfibermembranebaseddesiccantliquidairdehumidificationsystem AT krzysztofrajski performanceinvestigationofahollowfibermembranebaseddesiccantliquidairdehumidificationsystem |