Design and Experimental Research of a Lifting-Type Tidal Energy Capture Device
Abstract
:1. Introduction
2. Overview of Energy Harvesting Devices
2.1. Sea Area Characteristic Analysis
2.2. Design of a Floating Body with a Flow Velocity Increase
2.3. Design of Mooring System
2.4. Comparison and Analysis of Energy Capture Mechanism
2.5. Overall Scheme
3. Theoretical Analysis of Savonius Water Turbine
4. Impeller Parameters
4.1. The Influence of Blade Number
4.2. The Influence of Stage Number
4.3. The Influence of Distance from Water
5. Results Analysis and Discussion
6. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Nomenclature
Nomenclature | |
Maximum flow rate | |
Semi-daily cycle of the power flow | |
Energy utilization coefficient | |
Real-time flow rate | |
Blade sweep area | |
Ts | Effective time for the impeller to operate in a half-day cycle |
Radial projected area of the impeller | |
Velocity of the water | |
Impeller power | |
Concave resistance coefficient | |
Convex resistance coefficient | |
Blade tip linear velocity | |
PL | Energy of water flow against concave surface per unit time |
PD | Energy of water flow on a convex surface per unit of time |
FLj | Force of micro-area on a concave surface |
FDi | Force of the micro-area on a convex surface |
dw | Water action on the impeller per unit of time |
Resistance part of the turbine | |
Driving part of the turbine | |
Relative fluid velocity | |
Body effective area | |
Resistance coefficient | |
Length of the impeller | |
Distance of the impeller center from the water surface | |
Impeller diameter | |
Phase angle of the impeller | |
Greek Symbols | |
Density of seawater (kg/m3) | |
Gravitational acceleration (m/s2) | |
Abbreviation | |
S-type turbine | Savonius-type turbine |
PLC | Programmable Logic Controller |
LabVIEW | Laboratory Virtual Instrument Engineering Workbench |
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Horizontal Axis | Vertical Axis | ||
---|---|---|---|
Model | NACA airfoil, sheet airfoil | S-type water turbine | H-type water turbine |
Flow direction | Single direction | Multi-direction | Multi-direction |
Adapts to low-flow | Airfoil dependent | Yes | No |
Starting torque | Small | Big | Small |
Parameter | Value | Unit |
---|---|---|
Floating volume | 3 | m3 |
Floating mass | 150 | kg |
Turbine diameter | 0.5 | m |
Blade radius | 0.15 | m |
Blade thickness | 0.002 | m |
Turbine height | 0.61 | m |
Blade shape | Semicircle | / |
Overlap rate | 0.15 | / |
Turbine volume | 0.005 | m3 |
Moment of inertia of the turbine | (0.337, 0.337, 0.16) | kg·m2 |
Parameter | Value | Unit |
---|---|---|
Depth of water | 2 | m |
Sink length | 70 | m |
Sink width | 3.8 | m |
Sink depth | 3 | m |
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Bao, L.; Wang, Y.; Li, H.; Chen, J.; Huang, F.; Jiang, C. Design and Experimental Research of a Lifting-Type Tidal Energy Capture Device. J. Mar. Sci. Eng. 2024, 12, 1100. https://doi.org/10.3390/jmse12071100
Bao L, Wang Y, Li H, Chen J, Huang F, Jiang C. Design and Experimental Research of a Lifting-Type Tidal Energy Capture Device. Journal of Marine Science and Engineering. 2024; 12(7):1100. https://doi.org/10.3390/jmse12071100
Chicago/Turabian StyleBao, Lingjie, Ying Wang, Hao Li, Junhua Chen, Fangping Huang, and Chuhua Jiang. 2024. "Design and Experimental Research of a Lifting-Type Tidal Energy Capture Device" Journal of Marine Science and Engineering 12, no. 7: 1100. https://doi.org/10.3390/jmse12071100