Variable Height Dam Buoyancy Control for Tidal Energy
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Solution Overview
Problem
Current technologies lack an effective method to harness and convert the energy potential of sea tides into a sustainable and continuous energy source, leading to dependency on fossil fuels and nuclear energy.
Innovation Solution
A sea tide energy generating system comprising a variable height dam with buoyancy means that adjusts to water levels, creating a water race for a water wheel to generate energy, ensuring constant energy production throughout tidal phases and incorporating a sluice mechanism to control water level differentials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traditional fixed-height dam is used for tidal energy generation, then the structure is simple and stable, but energy generation is interrupted during low tide and the system cannot adapt to varying tidal levels
Solution Approach 1:
The dam structure is made dynamic through variable height dam elements that can adjust their elevation based on tidal conditions. Each dam element is equipped with buoyancy means that automatically adjust the dam height in response to water level changes, enabling continuous operation throughout the tidal cycle rather than being fixed at a single height.
Solution Approach 2:
The dam is divided into multiple independent variable height dam elements rather than a single fixed structure. Each element can independently adjust its height through buoyancy means, allowing different sections of the dam to operate at optimal heights for different tidal phases, thereby maintaining continuous energy generation.
2Power
If the dam height is increased to maximize energy generation during high tide, then more energy can be captured, but the system becomes vulnerable to stormy conditions and excessive water level differentials
Solution Approach 1:
The dam height is dynamically adjusted rather than maintained at a maximum fixed level. During stormy conditions or high wave activity, the buoyancy means automatically lower the dam elements to reduce the water level differential, thereby protecting the structure from excessive stress while still capturing energy during normal tidal conditions when higher dams are beneficial.
Solution Approach 2:
The key parameter of dam height is changed in response to environmental conditions. The buoyancy means detect water level and wave conditions, then adjust the dam element height accordingly - increasing height for maximum energy capture during calm high tides, and decreasing height during stormy conditions to maintain structural integrity.
3Object-affected harmful factors
If conventional energy sources like fossil fuels and nuclear energy are used, then energy supply is reliable and consistent, but environmental damage occurs and dependency on non-renewable resources increases
Solution Approach 1:
The tidal energy system harnesses the natural, self-renewing tidal cycle without requiring external fuel input. The buoyancy means automatically respond to tidal water level changes, and the water flow through the dam elements continuously drives the water wheels, creating a self-sustaining energy generation system that converts kinetic energy from tidal movement into electricity.
Solution Approach 2:
The system maintains continuous energy generation by having dam elements operate throughout the entire tidal cycle - generating power during both the incoming tide as water flows over the dam and during the outgoing tide when water levels equalize. This continuous operation provides reliable energy supply comparable to conventional sources while being environmentally sustainable.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides continuous and constant energy generation from sea tides, reducing environmental impact, minimizing costs, and ensuring operational safety by utilizing tidal movement as a cost-free energy source, while protecting the system from stormy conditions.
Implementation Method 1
a buoyancy means co-operable with each dam element and configured to control the height of the corresponding dam element in response to a level of water
Implementation Method 2
a water wheel operably located in each water race configured to produce usable energy
Data Source
AI summary
An energy generating system includes a dam in an estuary defining a water containment area. The dam includes a plurality of dam elements, each including a plurality of dam panels hingedly connected in series, which are urgeable from an inoperative folded state in a chamber to an operative state by a corresponding pair of main or secondary buoyancy tanks as the tide rises and falls. Each pair of main buoyancy tanks with the corresponding dam element defines a water race within which a water wheel is located. The water wheels are mounted on corresponding drive shafts which are connected in series and which are rotatably carried on support frameworks which are supported on the main buoyancy tanks. Electricity generators are supported on carrier frameworks which are supported on the secondary buoyancy tanks at respective ends of the dam, and are driven by the adjacent one of the drive shafts.