Capillary-force-driven solar steam generators printed by multi jet fusion

Solar steam generation has great application prospect in seawater desalination to obtain clean water. However, it is still a challenge to realize a high efficiency, high water quality, low cost and sustainable seawater desalination method. Three-dimensional (3D) structural design of solar steam gene...

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Main Author: Wong, Alicia Min Jie
Other Authors: Zhou Kun
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2023
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Online Access:https://hdl.handle.net/10356/167912
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1679122023-06-10T16:50:25Z Capillary-force-driven solar steam generators printed by multi jet fusion Wong, Alicia Min Jie Zhou Kun School of Mechanical and Aerospace Engineering kzhou@ntu.edu.sg Engineering::Mechanical engineering Solar steam generation has great application prospect in seawater desalination to obtain clean water. However, it is still a challenge to realize a high efficiency, high water quality, low cost and sustainable seawater desalination method. Three-dimensional (3D) structural design of solar steam generators (SSGs) is conducive to promote the water evaporation efficiency for effective seawater desalination. In this work, porous SSGs with special surface structures that exhibited excellent photothermal performance and salt self-cleaning properties are built by Multi Jet Fusion, a powder-based 3D printing technique. Sodium carbonate is introduced as a recyclable porogen for MJF printing. The MJF-printed porous polymeric SSGs have lightweight characteristics, and the interconnected pores promote water flow via capillary action. It is observed that SSGs with tree-like surface structures can suppress heat dissipation and increase photothermal conversion efficiency, resulting in high water evaporation rates. The seawater desalination rate per unit area was 12 g m-2 h-1, with the concentrations of various ions in the purified water meeting the requirements for direct drinking. In addition, the MJF-printed SSGs can self-clean and remove accumulated salts on their surfaces, and the water evaporation rate remains stable over a long period of time. Hence, the proposed porous SSGs with tree-like surface structures are promising for efficient and sustainable seawater desalination. Bachelor of Engineering (Mechanical Engineering) 2023-06-05T07:33:45Z 2023-06-05T07:33:45Z 2023 Final Year Project (FYP) Wong, A. M. J. (2023). Capillary-force-driven solar steam generators printed by multi jet fusion. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/167912 https://hdl.handle.net/10356/167912 en P-A024 application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
spellingShingle Engineering::Mechanical engineering
Wong, Alicia Min Jie
Capillary-force-driven solar steam generators printed by multi jet fusion
description Solar steam generation has great application prospect in seawater desalination to obtain clean water. However, it is still a challenge to realize a high efficiency, high water quality, low cost and sustainable seawater desalination method. Three-dimensional (3D) structural design of solar steam generators (SSGs) is conducive to promote the water evaporation efficiency for effective seawater desalination. In this work, porous SSGs with special surface structures that exhibited excellent photothermal performance and salt self-cleaning properties are built by Multi Jet Fusion, a powder-based 3D printing technique. Sodium carbonate is introduced as a recyclable porogen for MJF printing. The MJF-printed porous polymeric SSGs have lightweight characteristics, and the interconnected pores promote water flow via capillary action. It is observed that SSGs with tree-like surface structures can suppress heat dissipation and increase photothermal conversion efficiency, resulting in high water evaporation rates. The seawater desalination rate per unit area was 12 g m-2 h-1, with the concentrations of various ions in the purified water meeting the requirements for direct drinking. In addition, the MJF-printed SSGs can self-clean and remove accumulated salts on their surfaces, and the water evaporation rate remains stable over a long period of time. Hence, the proposed porous SSGs with tree-like surface structures are promising for efficient and sustainable seawater desalination.
author2 Zhou Kun
author_facet Zhou Kun
Wong, Alicia Min Jie
format Final Year Project
author Wong, Alicia Min Jie
author_sort Wong, Alicia Min Jie
title Capillary-force-driven solar steam generators printed by multi jet fusion
title_short Capillary-force-driven solar steam generators printed by multi jet fusion
title_full Capillary-force-driven solar steam generators printed by multi jet fusion
title_fullStr Capillary-force-driven solar steam generators printed by multi jet fusion
title_full_unstemmed Capillary-force-driven solar steam generators printed by multi jet fusion
title_sort capillary-force-driven solar steam generators printed by multi jet fusion
publisher Nanyang Technological University
publishDate 2023
url https://hdl.handle.net/10356/167912
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