Bubble Curtain Cooling With Adjustable Pipe Depth
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Solution Overview
Problem
Existing bubble curtain systems struggle to efficiently cool larger seawater surfaces to a target temperature, such as 26.5°C, due to differences in water density and salinity, causing colder water to sink before achieving effective cooling, and lack of dynamic adjustment to changing environmental conditions.
Innovation Solution
A bubble curtain system with an adjustable depth and configuration, using temperature sensors to control the depth of the pipe below the seawater surface, ensuring the mixed water has an average temperature close to the target, and incorporating dynamic adjustments with multiple pipes and cooling agents to maintain the desired temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If compressed air is applied to a submerged pipe to create bubble curtains for cooling seawater surfaces, then cooling effect is achieved, but the colder water sinks before achieving effective cooling due to density differences
Solution Approach 1:
The pipe depth is made adjustable and dynamically optimized based on real-time temperature measurements from sensors. The system continuously monitors the temperature profile of seawater layers and adjusts the pipe depth to position bubbles at the optimal depth where they will mix water layers to achieve the target surface temperature, preventing the cold water from sinking too quickly.
Solution Approach 2:
The system changes the depth parameter of the pipe dynamically based on environmental conditions. By adjusting the depth parameter according to temperature stratification and other environmental parameters, the system optimizes the mixing of water layers to achieve effective cooling while preventing density-driven sinking of the cooled water.
2Ease of operation
If the pipe depth is fixed, then the system is simple to operate, but it cannot adapt to changing environmental conditions and temperature profiles
Solution Approach 1:
The pipe depth is transformed from a fixed parameter to a dynamically adjustable one. The system automatically senses temperature profiles and other environmental conditions, then dynamically adjusts the pipe depth to optimize cooling performance under varying sea conditions, maintaining simplicity of operation while gaining adaptability.
Solution Approach 2:
Temperature sensors provide continuous feedback on the seawater temperature profile and surface temperature. This feedback is used to automatically adjust the pipe depth, enabling the system to adapt to changing environmental conditions while maintaining ease of operation through automated control.
3Reliability
If multiple pipes and cooling agents are added to maintain target temperature, then cooling effectiveness improves, but device complexity increases
Solution Approach 1:
The cooling system is segmented into multiple independent pipes that can be individually controlled. Each pipe acts as an independent cooling unit, allowing the system to achieve reliable temperature control through distributed cooling points while managing complexity through modular architecture.
Solution Approach 2:
The system uses multiple pipes that can serve different functions: some pipes may be optimized for cooling, others for mixing, and the system can adapt to different environmental conditions using the same basic pipe structure. This multi-functionality improves reliability without proportionally increasing complexity.
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
Achieves efficient and sustained cooling of larger seawater surfaces by maintaining the mixed water at the target temperature, preventing sinking, and adapting to environmental changes for effective thermal management and tropical cyclone mitigation.
Implementation Method 1
compressed air is then applied to the submerged pipe. Compressed air will then flow out of the adapted holes in the pipe and then bubbles will move upwards towards the seawater surface. The ascending bubbles will incorporate or entrain surrounding water generating a vertical flow of deeper water flowing upwards to the seawater surface.
Implementation Method 2
the colder seawater from the pre-calculated depth used for the cooling is a mix of different temperature layers of seawater, wherein the mix of seawater layers has an average temperature close to or equal to a target temperature of the seawater surface.
Data Source
AI summary
A system is provided having a bubble curtain comprising a pipe arranged with holes in respective pipe walls. Compressed air applied onto the pipe generates bubbles of the bubble curtain upwelling colder water from below a seawater surface. A position of the pipe below the seawater surface is a function of a defined target temperature of the cooled seawater surface.