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A Harvester with a Helix S-Type Vertical Axis to Capture Random Breeze Energy Efficiently

Breeze energy is a widely distributed renewable energy source in the natural world, but its efficient exploitation is very difficult. The conventional harvester with fixed arm length (HFA) has a relatively high start-up wind speed owing to its high and constant rotational inertia. Therefore, this pa...

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Detalles Bibliográficos
Autores principales: Zhang, Chao, Zhang, Boren, Liang, Jintao, Ming, Zhengfeng, Wen, Tao, Yang, Xinlong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10385569/
https://www.ncbi.nlm.nih.gov/pubmed/37512777
http://dx.doi.org/10.3390/mi14071466
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author Zhang, Chao
Zhang, Boren
Liang, Jintao
Ming, Zhengfeng
Wen, Tao
Yang, Xinlong
author_facet Zhang, Chao
Zhang, Boren
Liang, Jintao
Ming, Zhengfeng
Wen, Tao
Yang, Xinlong
author_sort Zhang, Chao
collection PubMed
description Breeze energy is a widely distributed renewable energy source in the natural world, but its efficient exploitation is very difficult. The conventional harvester with fixed arm length (HFA) has a relatively high start-up wind speed owing to its high and constant rotational inertia. Therefore, this paper proposes a harvester with a helix s-type vertical axis (HSVA) for achieving random energy capture in the natural breeze environment. The HSVA is constructed with two semi-circular buckets driven by the difference of the drag exerted, and the wind energy is transferred into mechanical energy. Firstly, as the wind speed changes, the HSVA harvester can match the random breeze to obtain highly efficient power. Compared with the HFA harvester, the power coefficient is significantly improved from 0.15 to 0.2 without additional equipment. Furthermore, it has more time for energy attenuation as the wind speeds dropped from strong to moderate. Moreover, the starting torque is also better than that of HFA harvester. Experiments showed that the HSVA harvester can improve power performance on the grounds of the wind speed ranging in 0.8–10.1 m/s, and that the star-up wind speed is 0.8 m/s and output peak power can reach 17.1 mW. In comparison with the HFA harvester, the HSVA harvester can obtain higher efficient power, requires lower startup speed and keeps energy longer under the same time. Additionally, as a distributed energy source, the HSVA harvester can provide a self-generating power supply to electronic sensors for monitoring the surrounding environment.
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spelling pubmed-103855692023-07-30 A Harvester with a Helix S-Type Vertical Axis to Capture Random Breeze Energy Efficiently Zhang, Chao Zhang, Boren Liang, Jintao Ming, Zhengfeng Wen, Tao Yang, Xinlong Micromachines (Basel) Article Breeze energy is a widely distributed renewable energy source in the natural world, but its efficient exploitation is very difficult. The conventional harvester with fixed arm length (HFA) has a relatively high start-up wind speed owing to its high and constant rotational inertia. Therefore, this paper proposes a harvester with a helix s-type vertical axis (HSVA) for achieving random energy capture in the natural breeze environment. The HSVA is constructed with two semi-circular buckets driven by the difference of the drag exerted, and the wind energy is transferred into mechanical energy. Firstly, as the wind speed changes, the HSVA harvester can match the random breeze to obtain highly efficient power. Compared with the HFA harvester, the power coefficient is significantly improved from 0.15 to 0.2 without additional equipment. Furthermore, it has more time for energy attenuation as the wind speeds dropped from strong to moderate. Moreover, the starting torque is also better than that of HFA harvester. Experiments showed that the HSVA harvester can improve power performance on the grounds of the wind speed ranging in 0.8–10.1 m/s, and that the star-up wind speed is 0.8 m/s and output peak power can reach 17.1 mW. In comparison with the HFA harvester, the HSVA harvester can obtain higher efficient power, requires lower startup speed and keeps energy longer under the same time. Additionally, as a distributed energy source, the HSVA harvester can provide a self-generating power supply to electronic sensors for monitoring the surrounding environment. MDPI 2023-07-21 /pmc/articles/PMC10385569/ /pubmed/37512777 http://dx.doi.org/10.3390/mi14071466 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Chao
Zhang, Boren
Liang, Jintao
Ming, Zhengfeng
Wen, Tao
Yang, Xinlong
A Harvester with a Helix S-Type Vertical Axis to Capture Random Breeze Energy Efficiently
title A Harvester with a Helix S-Type Vertical Axis to Capture Random Breeze Energy Efficiently
title_full A Harvester with a Helix S-Type Vertical Axis to Capture Random Breeze Energy Efficiently
title_fullStr A Harvester with a Helix S-Type Vertical Axis to Capture Random Breeze Energy Efficiently
title_full_unstemmed A Harvester with a Helix S-Type Vertical Axis to Capture Random Breeze Energy Efficiently
title_short A Harvester with a Helix S-Type Vertical Axis to Capture Random Breeze Energy Efficiently
title_sort harvester with a helix s-type vertical axis to capture random breeze energy efficiently
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10385569/
https://www.ncbi.nlm.nih.gov/pubmed/37512777
http://dx.doi.org/10.3390/mi14071466
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