Simulation and Analysis of Contactless Solar Evaporation
Zero-liquid discharge is an efficient pathway for high concentration brine and wastewater treatment. Contactless solar evaporation is a new configuration proposed in recent years towards this target, which has the advantages of solar energy utilization, simple structure, passive operation, and anti-...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Shanghai Jiao Tong University
2023-01-01
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| Series: | Shanghai Jiaotong Daxue xuebao |
| Subjects: | |
| Online Access: | https://xuebao.sjtu.edu.cn/article/2023/1006-2467/1006-2467-57-1-66.shtml |
| _version_ | 1797953739599904768 |
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| author | YU Jie, XU Zhenyuan |
| author_facet | YU Jie, XU Zhenyuan |
| author_sort | YU Jie, XU Zhenyuan |
| collection | DOAJ |
| description | Zero-liquid discharge is an efficient pathway for high concentration brine and wastewater treatment. Contactless solar evaporation is a new configuration proposed in recent years towards this target, which has the advantages of solar energy utilization, simple structure, passive operation, and anti-fouling. Considering that contactless solar evaporation lacks an effective predictive model to guide the optimization in real scenarios, a steady-state thermal resistance network model is developed for the first time and further analyses are conducted. According to the results, two main heat sources of the water, radiative heat transfer and air gap heat transfer, contribute 54.2% and 45.8% to the total heat flow and both have a significant impact on the evaporation performance. The larger air gap thickness has a negative effect on both of the two heat transfer processes. The evaporation rate with an air gap thickness of 10 mm is only 70% of that with an air gap thickness of 4 mm. Additionally, decreasing vapor diffusion resistance is an efficient way to increase the evaporation rate. The evaporation rate triples when the vapor diffusion coefficient increases from 5×10-6 m2/s to 2.5×10-5 m2/s. |
| first_indexed | 2024-04-10T23:06:55Z |
| format | Article |
| id | doaj.art-8cf9469ddea04c92b3afdc9b733e45d6 |
| institution | Directory Open Access Journal |
| issn | 1006-2467 |
| language | zho |
| last_indexed | 2024-04-10T23:06:55Z |
| publishDate | 2023-01-01 |
| publisher | Editorial Office of Journal of Shanghai Jiao Tong University |
| record_format | Article |
| series | Shanghai Jiaotong Daxue xuebao |
| spelling | doaj.art-8cf9469ddea04c92b3afdc9b733e45d62023-01-13T10:44:56ZzhoEditorial Office of Journal of Shanghai Jiao Tong UniversityShanghai Jiaotong Daxue xuebao1006-24672023-01-01571667510.16183/j.cnki.jsjtu.2021.255Simulation and Analysis of Contactless Solar EvaporationYU Jie, XU Zhenyuan0Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, ChinaZero-liquid discharge is an efficient pathway for high concentration brine and wastewater treatment. Contactless solar evaporation is a new configuration proposed in recent years towards this target, which has the advantages of solar energy utilization, simple structure, passive operation, and anti-fouling. Considering that contactless solar evaporation lacks an effective predictive model to guide the optimization in real scenarios, a steady-state thermal resistance network model is developed for the first time and further analyses are conducted. According to the results, two main heat sources of the water, radiative heat transfer and air gap heat transfer, contribute 54.2% and 45.8% to the total heat flow and both have a significant impact on the evaporation performance. The larger air gap thickness has a negative effect on both of the two heat transfer processes. The evaporation rate with an air gap thickness of 10 mm is only 70% of that with an air gap thickness of 4 mm. Additionally, decreasing vapor diffusion resistance is an efficient way to increase the evaporation rate. The evaporation rate triples when the vapor diffusion coefficient increases from 5×10-6 m2/s to 2.5×10-5 m2/s.https://xuebao.sjtu.edu.cn/article/2023/1006-2467/1006-2467-57-1-66.shtmlsolar energywastewaterdiffusioncontactless evaporationthermal resistance network |
| spellingShingle | YU Jie, XU Zhenyuan Simulation and Analysis of Contactless Solar Evaporation Shanghai Jiaotong Daxue xuebao solar energy wastewater diffusion contactless evaporation thermal resistance network |
| title | Simulation and Analysis of Contactless Solar Evaporation |
| title_full | Simulation and Analysis of Contactless Solar Evaporation |
| title_fullStr | Simulation and Analysis of Contactless Solar Evaporation |
| title_full_unstemmed | Simulation and Analysis of Contactless Solar Evaporation |
| title_short | Simulation and Analysis of Contactless Solar Evaporation |
| title_sort | simulation and analysis of contactless solar evaporation |
| topic | solar energy wastewater diffusion contactless evaporation thermal resistance network |
| url | https://xuebao.sjtu.edu.cn/article/2023/1006-2467/1006-2467-57-1-66.shtml |
| work_keys_str_mv | AT yujiexuzhenyuan simulationandanalysisofcontactlesssolarevaporation |