A heat pump-driven mechanical vapor compression desalination system and its operating characteristics
The converter valve of ultra-high-voltage direct current grid requires a large amount of cooling water for heat dissipation. Considering the generated waste heat, this study proposes a heat pump-driven mechanical vapor compression (HP-MVC) desalination system based on traditional power-driven mechan...
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Elsevier
2024-12-01
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| Series: | Water Resources and Industry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S221237172400026X |
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| author | Han Yang Chunxin Yang Leiming Geng |
| author_facet | Han Yang Chunxin Yang Leiming Geng |
| author_sort | Han Yang |
| collection | DOAJ |
| description | The converter valve of ultra-high-voltage direct current grid requires a large amount of cooling water for heat dissipation. Considering the generated waste heat, this study proposes a heat pump-driven mechanical vapor compression (HP-MVC) desalination system based on traditional power-driven mechanical vapor compression (MVC). Using the scaling-endoreversible thermodynamic model, the analytical solutions of the structural equation and operating boundary of the proposed HP-MVC system were derived, which is the innovation of this study. The effects of different component parameters on the thermodynamic characteristics and operation boundaries of the HP-MVC were determined. The results revealed that the HP-MVC system alternately exhibited heat-drive dominant and power-drive dominant modes, in which the specific power consumption was lower in the former. When the recovery ratio was 0.3, with an increase in the pressure ratio from 1.15 to 1.50, the heat supplemented by the heat pump decreased by 31.9 %, and the specific power consumption increased by 63.1 %. The analytical solutions of the structural equation provide a theoretical basis for the efficient operation of the system, and the operation boundaries demonstrate the difference between HP-MVC and traditional MVC. The HP-MVC reduces heat dissipation requirements and results in a more energy-efficient desalination system, which is a typical mutually beneficial design and worth promoting. |
| format | Article |
| id | doaj-art-7d2d4b9bbbff46a7b28c0dca90876ddc |
| institution | Kabale University |
| issn | 2212-3717 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Water Resources and Industry |
| spelling | doaj-art-7d2d4b9bbbff46a7b28c0dca90876ddc2024-12-02T05:04:48ZengElsevierWater Resources and Industry2212-37172024-12-0132100264A heat pump-driven mechanical vapor compression desalination system and its operating characteristicsHan Yang0Chunxin Yang1Leiming Geng2School of Aeronautic Science and Engineering, Beihang University, Beijing, ChinaSchool of Aeronautic Science and Engineering, Beihang University, Beijing, China; Corresponding author. Main building A-701, Beihang University, 9 South 3rd street, Gaojiaoyuan, Changping District. Beijing, 102206, China.AVIC General Huanan Aircraft Industry Co., Ltd, Zhuhai, ChinaThe converter valve of ultra-high-voltage direct current grid requires a large amount of cooling water for heat dissipation. Considering the generated waste heat, this study proposes a heat pump-driven mechanical vapor compression (HP-MVC) desalination system based on traditional power-driven mechanical vapor compression (MVC). Using the scaling-endoreversible thermodynamic model, the analytical solutions of the structural equation and operating boundary of the proposed HP-MVC system were derived, which is the innovation of this study. The effects of different component parameters on the thermodynamic characteristics and operation boundaries of the HP-MVC were determined. The results revealed that the HP-MVC system alternately exhibited heat-drive dominant and power-drive dominant modes, in which the specific power consumption was lower in the former. When the recovery ratio was 0.3, with an increase in the pressure ratio from 1.15 to 1.50, the heat supplemented by the heat pump decreased by 31.9 %, and the specific power consumption increased by 63.1 %. The analytical solutions of the structural equation provide a theoretical basis for the efficient operation of the system, and the operation boundaries demonstrate the difference between HP-MVC and traditional MVC. The HP-MVC reduces heat dissipation requirements and results in a more energy-efficient desalination system, which is a typical mutually beneficial design and worth promoting.http://www.sciencedirect.com/science/article/pii/S221237172400026XMechanical vapor compression (MVC)DesalinationWaste heat utilizationScaling-endoreversible thermodynamic analysis modelOperation boundary |
| spellingShingle | Han Yang Chunxin Yang Leiming Geng A heat pump-driven mechanical vapor compression desalination system and its operating characteristics Water Resources and Industry Mechanical vapor compression (MVC) Desalination Waste heat utilization Scaling-endoreversible thermodynamic analysis model Operation boundary |
| title | A heat pump-driven mechanical vapor compression desalination system and its operating characteristics |
| title_full | A heat pump-driven mechanical vapor compression desalination system and its operating characteristics |
| title_fullStr | A heat pump-driven mechanical vapor compression desalination system and its operating characteristics |
| title_full_unstemmed | A heat pump-driven mechanical vapor compression desalination system and its operating characteristics |
| title_short | A heat pump-driven mechanical vapor compression desalination system and its operating characteristics |
| title_sort | heat pump driven mechanical vapor compression desalination system and its operating characteristics |
| topic | Mechanical vapor compression (MVC) Desalination Waste heat utilization Scaling-endoreversible thermodynamic analysis model Operation boundary |
| url | http://www.sciencedirect.com/science/article/pii/S221237172400026X |
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