Ship Air Bubble Control Device for Hull Resistance Management
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Solution Overview
Problem
Existing air lubricating systems for ships lack an efficient control mechanism to properly produce an air lubrication effect, leading to suboptimal energy savings and increased energy consumption.
Innovation Solution
A control device that includes an air bubble controller to regulate the blowing of air bubbles based on calculated hull resistance, using data such as ship velocity, weather conditions, draft, and rudder angle to ensure an optimal air lubrication effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the air lubricating device operates continuously to reduce hull resistance, then the air lubrication effect is maintained, but energy consumption increases due to continuous air blowing
Solution Approach 1:
The air lubricating device dynamically adjusts its operation based on real-time hull resistance measurements. The control device activates the air blowing device only when hull resistance exceeds a threshold, and deactivates it when resistance is sufficiently low, creating a dynamic operational pattern that optimizes the balance between air lubrication benefits and energy consumption.
Solution Approach 2:
The system implements feedback control by continuously measuring hull resistance and using this information to adjust the air lubricating device's operation. The control device receives resistance data, compares it against predetermined thresholds, and modifies the air blowing operation accordingly, ensuring optimal energy usage while maintaining effective hull resistance reduction.
2Ease of operation
If the air lubricating device is operated without control to simplify operation, then ease of operation is improved, but the air lubrication effect cannot be properly produced
Solution Approach 1:
The air lubricating system performs self-control by automatically adjusting its operation based on hull resistance conditions. The control device autonomously determines when to activate or deactivate the air blowing device without requiring operator intervention, maintaining optimal air lubrication effect while simplifying operation through automated decision-making.
Solution Approach 2:
The system replaces manual operational control with an automated control mechanism that uses sensors and processing units to monitor hull resistance and adjust air blowing accordingly. This substitution of mechanical/manual control with automated electronic control maintains operational simplicity while ensuring proper air lubrication effect.
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 control device effectively manages the air lubrication system to achieve a positive energy balance, reducing hull resistance and energy consumption while ensuring proper operation of the air lubricating device.
Implementation Method 1
an air lubricating device to produce an air lubrication effect
Data Source
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AI summary
A control device includes an air bubble controller to control a blow mechanism designed to blow an air bubble out through an air outlet formed in a hull. The air bubble controller starts blowing the air bubble outward or increase an amount of the air bubble blown outward when hull resistance of the hull satisfies a predetermined condition.