Performance Enhancement of Hydraulic Axial Turbine Rotor Using Enclosure at Upstream and Downstream Side
Publication: Journal of Energy Engineering
Volume 150, Issue 5
Abstract
The demand for electricity is increasing tremendously globally with the development of countries. To fulfill the supply of electricity, many countries have already adopted renewable energy sources. The production of electricity from hydraulic energy sources is one of the oldest methods. The axial flow water turbine can efficiently generate energy from the water flow with a very low head. The current investigation is focused on enhancing the performance of the axial turbine by providing an enclosure around the rotor. The initial experiments were carried out with only the upstream enclosure. The optimized upstream enclosure was taken with different lengths of downstream enclosure for further investigations. The current investigation concluded that the maximum efficiency using only an upstream enclosure is 89.48%, which is around 3.20% higher compared with the bare turbine. The optimum efficiency was found at upstream-side length ratio (upstream enclosure length ). With using the optimum , the maximum efficiency for the downstream enclosure was found at downstream-side length ratio (downstream enclosure length ). The highest efficiency value for this axial runner was obtained at 90.89%, which is 4.83% higher compared with the bare turbine.
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Data Availability Statement
All data and models used during the study appear in the published article.
Acknowledgments
The authors gratefully acknowledge Science and Engineering Research Board (SERB), the Department of Science and Technology, Delhi, India, for funding through core research grant for this study. The sanction order number is CRG/2020/005420. The authors are also grateful to Sanjay P. for his contribution in the modeling of runner geometry.
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Information & Authors
Information
Published In
Journal of Energy Engineering
Volume 150 • Issue 5 • October 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Dec 16, 2023
Accepted: May 14, 2024
Published online: Aug 6, 2024
Published in print: Oct 1, 2024
Discussion open until: Jan 6, 2025
ASCE Technical Topics:
- Continuum mechanics
- Electric power
- Energy engineering
- Energy sources (by type)
- Engineering fundamentals
- Engineering mechanics
- Engines
- Equipment and machinery
- Flow (fluid dynamics)
- Fluid dynamics
- Fluid mechanics
- Hydraulic engineering
- Hydraulics
- Hydrologic engineering
- Renewable energy
- River engineering
- Rivers and streams
- Turbines
- Water and water resources
- Water conservation
- Water flow
- Water management
- Water policy
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