Robotic Ocean Farm Submersible Grid Towing System
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Solution Overview
Problem
Current ocean biomass production methods are economically unviable at small scales and can disrupt ocean climate due to the upwelling of deep water, requiring large, expensive infrastructure and potentially causing unforeseen climate impacts.
Innovation Solution
A robotic ocean farm system with a submersible towing system and neutral-buoyancy grid that navigates and positions itself for sunlight exposure and nutrient gathering, using tow and reaction boats with propulsion systems to maintain grid tension and avoid weather and traffic, allowing for efficient sunlight conversion to chemical energy without significant deep water upwelling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If large-scale anchored farms are deployed to achieve economical biomass production, then productivity increases, but device complexity and capital cost increase significantly
Solution Approach 1:
The farm system is divided into multiple independent floating grid modules that can operate autonomously. Each module is a self-contained unit with its own propulsion and tensioning systems, allowing the overall farm to scale by adding or removing modules rather than requiring a single large anchored structure. This segmentation reduces the complexity of any individual unit while maintaining high total productivity.
Solution Approach 2:
The farm transitions from a static anchored structure to a dynamic floating system that can move autonomously through the water column. The floating grids are equipped with propulsion systems that allow them to navigate to optimal locations, adjust their positions dynamically, and adapt to changing environmental conditions without requiring complex anchoring infrastructure.
2Productivity
If deep water upwelling is used to provide nutrients to surface plants, then productivity improves, but harmful environmental effects occur due to climate disruption
Solution Approach 1:
Instead of vertically upwelling deep nutrient-rich water to the surface (vertical dimension), the system moves the entire farm horizontally through the water column to access nutrient-rich zones. The floating grids can dive to depth to access nutrients and then return to the surface for photosynthesis, transforming a vertical nutrient transport problem into a horizontal migration solution that avoids climate disruption.
Solution Approach 2:
The farm system autonomously navigates to and from nutrient-rich deep water zones without external intervention. Each floating grid uses its own propulsion systems to dive, gather nutrients, surface for photosynthesis, and return to depth, creating a self-sustaining nutrient cycling system that doesn't require energy-intensive mechanical upwelling infrastructure.
3Productivity
If anchored farms with large infrastructure are deployed, then productivity increases, but the system becomes vulnerable to weather and currents requiring elaborate encouragement
Solution Approach 1:
The system replaces static anchored structures with dynamic floating grids that can actively respond to environmental conditions. The floating modules can move away from storm centers, adjust their depth positions to avoid rough surface conditions, and reposition themselves in favorable current zones, transforming vulnerability into adaptive resilience.
Solution Approach 2:
Each floating grid module is self-propelled and autonomously navigates to avoid adverse weather conditions and optimizes its position relative to currents and waves. The system uses onboard sensors and propulsion to self-adjust to environmental conditions without requiring external intervention or elaborate protective infrastructure.
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
Enables economical biomass production at smaller scales with reduced capital costs and minimal climate disruption, maintaining grid tension and optimizing energy conversion efficiency while avoiding environmental impacts.
Implementation Method 1
fast-growing marine plants (especially Macrocystis Pyrifera, the 'California Giant Kelp') can convert over 1% of the incident sunlight into useful stored chemical energy
Implementation Method 2
A robotic ocean farm system with a submersible towing system and neutral-buoyancy grid
Data Source
Figure 1~2
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AI summary
Robotic ocean farm includes plant support grid, with submersible towing system for positioning support grids in a first surfaced position for sunlight exposure and a second submerged position for nutrient gathering. The towing system incorporates tow boats connected to the front of the grid for navigating and maintaining lateral tension. Reaction boats are connected to the aft periphery of the grid. A harvesting station is placed to meet the farms at locations dupng voyage. Base stations communicate with the farms to provide mutual support and informational exchange for operation of the farms.