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Re-Engineering Dew-Harvesting Cactus Macrostructures to Enhance Water Collection as an Adaptive Climate Change Strategy: An Experimental Comparison

Tegwen Malik Orcid Logo, David Gethin Orcid Logo, Frederic Boy Orcid Logo, Gareth Davies Orcid Logo, Andrew Parker Orcid Logo

Atmosphere, Volume: 14, Issue: 12, Start page: 1736

Swansea University Authors: Tegwen Malik Orcid Logo, David Gethin Orcid Logo, Frederic Boy Orcid Logo, Gareth Davies Orcid Logo

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DOI (Published version): 10.3390/atmos14121736

Abstract

The spinal structures found on Copiapoa cinerea var. haseltoniana, an efficient dew-harvesting cactus, were fabricated and evaluated both in a climate chamber and outdoors in dewy conditions. A mix of aluminium and steel was used to fabricate these surfaces, with aluminium being used for everything...

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Published in: Atmosphere
ISSN: 2073-4433
Published: MDPI AG 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa65096
first_indexed 2023-11-24T17:20:34Z
last_indexed 2024-11-25T14:15:22Z
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A mix of aluminium and steel was used to fabricate these surfaces, with aluminium being used for everything but the replicated spine features, which were constructed from steel. Each surface was entirely coated with a highly emissive paint containing an alumina&#x2013;silicate OPUR additive. Three replica versions (stem only, spine only, and stem &amp; spine) were compared to a flat planar reference surface. Experimental results demonstrated that all three biomimetic macro-structured surfaces significantly enhanced dew harvesting compared to the reference surface. It was established that the stem &amp; spine replica, spine replica, and stem replica all demonstrated significantly more dew harvesting, with mean efficiency ratios in respect of the reference surface of 1.08 &#xB1; 0.03, 1.08 &#xB1; 0.02, and 1.02 &#xB1; 0.01, respectively. Furthermore, the method of surface water collection was found to influence the water collection rate. The diagonal run-off flow across a flat planar surface was 34% more efficient than the parallel run-off flow on the same surface. 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spelling 2023-12-19T13:51:06.3134461 v2 65096 2023-11-24 Re-Engineering Dew-Harvesting Cactus Macrostructures to Enhance Water Collection as an Adaptive Climate Change Strategy: An Experimental Comparison d7e74f3c3979dff2baba1a16fe50e24a 0000-0003-4315-5726 Tegwen Malik Tegwen Malik true false 20b93675a5457203ae87ebc32bd6d155 0000-0002-7142-8253 David Gethin David Gethin true false 43e704698d5dbbac3734b7cd0fef60aa 0000-0003-1373-6634 Frederic Boy Frederic Boy true false 0fa6da2da22b7dce598291b581746188 0000-0001-7872-7574 Gareth Davies Gareth Davies true false 2023-11-24 CBAE The spinal structures found on Copiapoa cinerea var. haseltoniana, an efficient dew-harvesting cactus, were fabricated and evaluated both in a climate chamber and outdoors in dewy conditions. A mix of aluminium and steel was used to fabricate these surfaces, with aluminium being used for everything but the replicated spine features, which were constructed from steel. Each surface was entirely coated with a highly emissive paint containing an alumina–silicate OPUR additive. Three replica versions (stem only, spine only, and stem & spine) were compared to a flat planar reference surface. Experimental results demonstrated that all three biomimetic macro-structured surfaces significantly enhanced dew harvesting compared to the reference surface. It was established that the stem & spine replica, spine replica, and stem replica all demonstrated significantly more dew harvesting, with mean efficiency ratios in respect of the reference surface of 1.08 ± 0.03, 1.08 ± 0.02, and 1.02 ± 0.01, respectively. Furthermore, the method of surface water collection was found to influence the water collection rate. The diagonal run-off flow across a flat planar surface was 34% more efficient than the parallel run-off flow on the same surface. These findings provide valuable insights for the construction and installation of biomimetic-inspired dew-harvesting devices, particularly in regions that are most challenged by decreasing dew yields as a result of climate change. Journal Article Atmosphere 14 12 1736 MDPI AG 2073-4433 Biomimetics, surface structures, cacti, water harvesting, climate change, dew, bio-inspiration 25 11 2023 2023-11-25 10.3390/atmos14121736 http://dx.doi.org/10.3390/atmos14121736 COLLEGE NANME Management School COLLEGE CODE CBAE Swansea University Other This research was funded by Fujitsu and supported by HPC Wales and Swansea University. 2023-12-19T13:51:06.3134461 2023-11-24T17:15:11.1009008 Faculty of Humanities and Social Sciences School of Management - Business Management Tegwen Malik 0000-0003-4315-5726 1 David Gethin 0000-0002-7142-8253 2 Frederic Boy 0000-0003-1373-6634 3 Gareth Davies 0000-0001-7872-7574 4 Andrew Parker 0000-0002-4564-2838 5 65096__29290__8560690191db4bb9ad9b371561c8a0ad.pdf 65096.VOR.pdf 2023-12-19T12:44:47.9717542 Output 10000153 application/pdf Version of Record true © 2023 by the authors. Licensee MDPI, Basel, Switzerland. Distributed under the terms of a Creative Commons Attribution 4.0 International License (CC BY 4.0). true eng https://creativecommons.org/licenses/by/4.0/
title Re-Engineering Dew-Harvesting Cactus Macrostructures to Enhance Water Collection as an Adaptive Climate Change Strategy: An Experimental Comparison
spellingShingle Re-Engineering Dew-Harvesting Cactus Macrostructures to Enhance Water Collection as an Adaptive Climate Change Strategy: An Experimental Comparison
Tegwen Malik
David Gethin
Frederic Boy
Gareth Davies
title_short Re-Engineering Dew-Harvesting Cactus Macrostructures to Enhance Water Collection as an Adaptive Climate Change Strategy: An Experimental Comparison
title_full Re-Engineering Dew-Harvesting Cactus Macrostructures to Enhance Water Collection as an Adaptive Climate Change Strategy: An Experimental Comparison
title_fullStr Re-Engineering Dew-Harvesting Cactus Macrostructures to Enhance Water Collection as an Adaptive Climate Change Strategy: An Experimental Comparison
title_full_unstemmed Re-Engineering Dew-Harvesting Cactus Macrostructures to Enhance Water Collection as an Adaptive Climate Change Strategy: An Experimental Comparison
title_sort Re-Engineering Dew-Harvesting Cactus Macrostructures to Enhance Water Collection as an Adaptive Climate Change Strategy: An Experimental Comparison
author_id_str_mv d7e74f3c3979dff2baba1a16fe50e24a
20b93675a5457203ae87ebc32bd6d155
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0fa6da2da22b7dce598291b581746188
author_id_fullname_str_mv d7e74f3c3979dff2baba1a16fe50e24a_***_Tegwen Malik
20b93675a5457203ae87ebc32bd6d155_***_David Gethin
43e704698d5dbbac3734b7cd0fef60aa_***_Frederic Boy
0fa6da2da22b7dce598291b581746188_***_Gareth Davies
author Tegwen Malik
David Gethin
Frederic Boy
Gareth Davies
author2 Tegwen Malik
David Gethin
Frederic Boy
Gareth Davies
Andrew Parker
format Journal article
container_title Atmosphere
container_volume 14
container_issue 12
container_start_page 1736
publishDate 2023
institution Swansea University
issn 2073-4433
doi_str_mv 10.3390/atmos14121736
publisher MDPI AG
college_str Faculty of Humanities and Social Sciences
hierarchytype
hierarchy_top_id facultyofhumanitiesandsocialsciences
hierarchy_top_title Faculty of Humanities and Social Sciences
hierarchy_parent_id facultyofhumanitiesandsocialsciences
hierarchy_parent_title Faculty of Humanities and Social Sciences
department_str School of Management - Business Management{{{_:::_}}}Faculty of Humanities and Social Sciences{{{_:::_}}}School of Management - Business Management
url http://dx.doi.org/10.3390/atmos14121736
document_store_str 1
active_str 0
description The spinal structures found on Copiapoa cinerea var. haseltoniana, an efficient dew-harvesting cactus, were fabricated and evaluated both in a climate chamber and outdoors in dewy conditions. A mix of aluminium and steel was used to fabricate these surfaces, with aluminium being used for everything but the replicated spine features, which were constructed from steel. Each surface was entirely coated with a highly emissive paint containing an alumina–silicate OPUR additive. Three replica versions (stem only, spine only, and stem & spine) were compared to a flat planar reference surface. Experimental results demonstrated that all three biomimetic macro-structured surfaces significantly enhanced dew harvesting compared to the reference surface. It was established that the stem & spine replica, spine replica, and stem replica all demonstrated significantly more dew harvesting, with mean efficiency ratios in respect of the reference surface of 1.08 ± 0.03, 1.08 ± 0.02, and 1.02 ± 0.01, respectively. Furthermore, the method of surface water collection was found to influence the water collection rate. The diagonal run-off flow across a flat planar surface was 34% more efficient than the parallel run-off flow on the same surface. These findings provide valuable insights for the construction and installation of biomimetic-inspired dew-harvesting devices, particularly in regions that are most challenged by decreasing dew yields as a result of climate change.
published_date 2023-11-25T13:13:17Z
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