Numerical simulation analysis of heat and mass transfer of saline wastewater in a falling film evaporation tube based on different inlet modes.

Kong, XC; Liu, YL; Li, HS; Xue, JL; Liu, B; Cheng, DL; Gao, Y; Xiao, XF

Numerical simulation analysis of heat and mass transfer of saline wastewater in a falling film evaporation tube based on different inlet modes.

Kong, XC Liu, YL Li, HS Xue, JL Liu, B Cheng, DL Gao, Y Xiao, XF

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Publisher:: IWA Publishing
Publication Type:: Journal Article
Citation:: Water Sci Technol, 2023, 87, (9), pp. 2128-2141
Issue Date:: 2023-05

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Field	Value	Language
dc.contributor.author	Kong, XC
dc.contributor.author	Liu, YL
dc.contributor.author	Li, HS
dc.contributor.author	Xue, JL
dc.contributor.author	Liu, B
dc.contributor.author	Cheng, DL
dc.contributor.author	Gao, Y
dc.contributor.author	Xiao, XF
dc.date.accessioned	2024-05-19T00:56:57Z
dc.date.available	2024-05-19T00:56:57Z
dc.date.issued	2023-05
dc.identifier.citation	Water Sci Technol, 2023, 87, (9), pp. 2128-2141
dc.identifier.issn	0273-1223
dc.identifier.issn	1996-9732
dc.identifier.uri	http://hdl.handle.net/10453/179030
dc.description.abstract	Falling film evaporation technology is widely used in the treatment of salt-containing wastewater in coal chemical industry. However, there is still a lack of research on the inlet method of vertical falling film evaporation tubes. In this paper, the heat and mass transfer processes of saline wastewater under vertical and tangential inlets were investigated using numerical simulations. On this basis, the differences in flow and heat transfer processes between saline wastewater and pure water under tangential inlet were investigated. The results showed that the flow velocity of saline wastewater with a falling film evaporation tube in a tangential inlet mode was larger. Meanwhile, the turbulence in this way was more intense and the fluid temperature in the vertical tube was higher. Saline wastewater has higher temperature and smaller liquid volume fraction than pure water liquid membrane in the range of 193-1,000 mm from the inlet. The use of tangential inlet method to treat salt-containing wastewater has higher evaporation efficiency and is a very effective way to guide the improvement of heat transfer efficiency.
dc.format	Print
dc.language	eng
dc.publisher	IWA Publishing
dc.relation.ispartof	Water Sci Technol
dc.relation.isbasedon	10.2166/wst.2023.130
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Environmental Engineering
dc.subject.mesh	Bays
dc.subject.mesh	Hot Temperature
dc.subject.mesh	Temperature
dc.subject.mesh	Wastewater
dc.subject.mesh	Temperature
dc.subject.mesh	Hot Temperature
dc.subject.mesh	Bays
dc.subject.mesh	Wastewater
dc.subject.mesh	Bays
dc.subject.mesh	Hot Temperature
dc.subject.mesh	Temperature
dc.subject.mesh	Wastewater
dc.title	Numerical simulation analysis of heat and mass transfer of saline wastewater in a falling film evaporation tube based on different inlet modes.
dc.type	Journal Article
utslib.citation.volume	87
utslib.location.activity	England
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	open_access	*
dc.date.updated	2024-05-19T00:56:55Z
pubs.issue	9
pubs.publication-status	Published
pubs.volume	87
utslib.citation.issue	9

Abstract:

Falling film evaporation technology is widely used in the treatment of salt-containing wastewater in coal chemical industry. However, there is still a lack of research on the inlet method of vertical falling film evaporation tubes. In this paper, the heat and mass transfer processes of saline wastewater under vertical and tangential inlets were investigated using numerical simulations. On this basis, the differences in flow and heat transfer processes between saline wastewater and pure water under tangential inlet were investigated. The results showed that the flow velocity of saline wastewater with a falling film evaporation tube in a tangential inlet mode was larger. Meanwhile, the turbulence in this way was more intense and the fluid temperature in the vertical tube was higher. Saline wastewater has higher temperature and smaller liquid volume fraction than pure water liquid membrane in the range of 193-1,000 mm from the inlet. The use of tangential inlet method to treat salt-containing wastewater has higher evaporation efficiency and is a very effective way to guide the improvement of heat transfer efficiency.

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http://hdl.handle.net/10453/179030