Experimental Study on Hydroelectric Energy Harvester Based on a Hybrid Qiqi and Turbine Structure

The Qiqi structure design can automatically upset and spill its content once it arrives at limit capacity under vertical water flow excitation. Considering this function, the Qiqi structure has been utilized for small hydroelectric energy harvesting lately. To investigate the tradeoff between the Qi...

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Autores principales:	Bin Bao, Quan Wang, Yufei Wu, Pengda Li
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Qiqi structure flow-induced vibration energy harvesting piezoelectric turbine structure small hydroelectric Technology T
Acceso en línea:	https://doaj.org/article/e49834fea6f54bdd831fefbf99c6e311
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id	oai:doaj.org-article:e49834fea6f54bdd831fefbf99c6e311
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spelling	oai:doaj.org-article:e49834fea6f54bdd831fefbf99c6e3112021-11-25T17:27:06ZExperimental Study on Hydroelectric Energy Harvester Based on a Hybrid Qiqi and Turbine Structure10.3390/en142276011996-1073https://doaj.org/article/e49834fea6f54bdd831fefbf99c6e3112021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7601https://doaj.org/toc/1996-1073The Qiqi structure design can automatically upset and spill its content once it arrives at limit capacity under vertical water flow excitation. Considering this function, the Qiqi structure has been utilized for small hydroelectric energy harvesting lately. To investigate the tradeoff between the Qiqi structure and the turbine structure for small hydroelectric energy harvesting, an energy harvester based on a hybrid Qiqi and turbine structure is proposed for vertical water flow hydroelectric applications. The hybrid structure is composed of a rectangular Qiqi structure, with two blades inserted on both sides. Self-tipping function of the hybrid Qiqi structure and working principle of the structure is investigated in detail. The proposed structure has both the advantages of low flow velocity energy harvesting of the Qiqi structure and high flow velocity energy harvesting of the turbine structure. A hydroelectric energy harvesting application using the hybrid structure is given to demonstrate that the hybrid structure had a higher rotational speed than the Qiqi structure under vertical low water flow excitation and was able to work at relatively high flow rates. Thus, the investigated hybrid structure can help small rotational hydropower achieve better energy harvesting performance and work at wide-range flow rates under vertical ultra-low water flow applications. At 600 mL/min, 902 μJ of electrical energy was charged by the investigated structure, which is six times higher than that using the Qiqi structure alone.Bin BaoQuan WangYufei WuPengda LiMDPI AGarticleQiqi structureflow-induced vibration energy harvestingpiezoelectricturbine structuresmall hydroelectricTechnologyTENEnergies, Vol 14, Iss 7601, p 7601 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Qiqi structure flow-induced vibration energy harvesting piezoelectric turbine structure small hydroelectric Technology T
spellingShingle	Qiqi structure flow-induced vibration energy harvesting piezoelectric turbine structure small hydroelectric Technology T Bin Bao Quan Wang Yufei Wu Pengda Li Experimental Study on Hydroelectric Energy Harvester Based on a Hybrid Qiqi and Turbine Structure
description	The Qiqi structure design can automatically upset and spill its content once it arrives at limit capacity under vertical water flow excitation. Considering this function, the Qiqi structure has been utilized for small hydroelectric energy harvesting lately. To investigate the tradeoff between the Qiqi structure and the turbine structure for small hydroelectric energy harvesting, an energy harvester based on a hybrid Qiqi and turbine structure is proposed for vertical water flow hydroelectric applications. The hybrid structure is composed of a rectangular Qiqi structure, with two blades inserted on both sides. Self-tipping function of the hybrid Qiqi structure and working principle of the structure is investigated in detail. The proposed structure has both the advantages of low flow velocity energy harvesting of the Qiqi structure and high flow velocity energy harvesting of the turbine structure. A hydroelectric energy harvesting application using the hybrid structure is given to demonstrate that the hybrid structure had a higher rotational speed than the Qiqi structure under vertical low water flow excitation and was able to work at relatively high flow rates. Thus, the investigated hybrid structure can help small rotational hydropower achieve better energy harvesting performance and work at wide-range flow rates under vertical ultra-low water flow applications. At 600 mL/min, 902 μJ of electrical energy was charged by the investigated structure, which is six times higher than that using the Qiqi structure alone.
format	article
author	Bin Bao Quan Wang Yufei Wu Pengda Li
author_facet	Bin Bao Quan Wang Yufei Wu Pengda Li
author_sort	Bin Bao
title	Experimental Study on Hydroelectric Energy Harvester Based on a Hybrid Qiqi and Turbine Structure
title_short	Experimental Study on Hydroelectric Energy Harvester Based on a Hybrid Qiqi and Turbine Structure
title_full	Experimental Study on Hydroelectric Energy Harvester Based on a Hybrid Qiqi and Turbine Structure
title_fullStr	Experimental Study on Hydroelectric Energy Harvester Based on a Hybrid Qiqi and Turbine Structure
title_full_unstemmed	Experimental Study on Hydroelectric Energy Harvester Based on a Hybrid Qiqi and Turbine Structure
title_sort	experimental study on hydroelectric energy harvester based on a hybrid qiqi and turbine structure
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e49834fea6f54bdd831fefbf99c6e311
work_keys_str_mv	AT binbao experimentalstudyonhydroelectricenergyharvesterbasedonahybridqiqiandturbinestructure AT quanwang experimentalstudyonhydroelectricenergyharvesterbasedonahybridqiqiandturbinestructure AT yufeiwu experimentalstudyonhydroelectricenergyharvesterbasedonahybridqiqiandturbinestructure AT pengdali experimentalstudyonhydroelectricenergyharvesterbasedonahybridqiqiandturbinestructure
_version_	1718412381002924032

Experimental Study on Hydroelectric Energy Harvester Based on a Hybrid Qiqi and Turbine Structure

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