Thermoelectric Duct Shield Layout for Heat Transfer and Flow
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Solution Overview
Problem
Current power generating apparatuses using thermoelectric devices face inefficiencies in electricity generation due to interference with fluid flow and heat transfer, particularly when trying to harness temperature differences between low and high temperature portions.
Innovation Solution
The apparatus includes a duct with thermoelectric modules and a shield member design that allows for the passage of fluids while minimizing interference with the flow, using a shield member with specific face heights and orientations to ensure efficient heat transfer and fluid flow, and an insulating member to enhance electrical wire and connector protection without obstructing fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shield member is added to protect electrical wires and connectors, then reliability is improved, but device complexity increases
Solution Approach 1:
The shield member integrates multiple functions: it protects electrical wires and connectors from thermal damage, serves as a structural support element, and guides fluid flow between thermoelectric modules. This consolidation of protection, support, and flow guidance into a single component improves reliability while avoiding the complexity increase that would result from adding separate components for each function.
Solution Approach 2:
The shield member is designed as a multi-functional component that simultaneously provides thermal protection for electrical components, structural support for the thermoelectric module assembly, and fluid flow management. This universal design approach allows one component to fulfill multiple roles, improving system reliability without increasing overall device complexity.
2Temperature
If thermoelectric modules are disposed spaced apart on the duct, then heat transfer efficiency is improved, but device complexity increases
Solution Approach 1:
The thermoelectric system is segmented into multiple discrete modules disposed spaced apart on the duct surface. This segmentation allows each module to operate independently with optimized thermal characteristics, improving overall heat transfer efficiency. The modular arrangement simplifies the thermal management strategy compared to a monolithic design, as each module can be independently sized and positioned for optimal performance.
3Reliability
If the shield member has higher height to protect components, then reliability is improved, but fluid flow is obstructed
Solution Approach 1:
The shield member employs varying heights across different regions to optimize both protection and fluid flow. The front portion has a lower height to minimize flow obstruction, while the rear portion has a higher height to provide adequate protection for electrical wires and connectors. This localized variation in shield height allows the system to simultaneously achieve component protection and maintain fluid flow efficiency.
Solution Approach 2:
The shield member features a curved upper surface that transitions smoothly from the lower front portion to the higher rear portion. This curved geometry promotes smooth fluid flow over the shield structure, reducing turbulence and flow resistance compared to a sharp angular transition. The curvature allows the shield to provide enhanced protection at the rear while maintaining favorable flow characteristics throughout.
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
This design enhances thermoelectric conversion efficiency by optimizing fluid flow and heat transfer, improving electricity generation performance while maintaining a compact and simple assembly.
Implementation Method 1
devices which use the Seebeck effect in which an electromotive force is generated due to a temperature difference
Implementation Method 2
a radiation fin may be disposed at a side of a high temperature portion of the thermoelectric device, and a second fluid may pass through the radiation fin
Data Source
AI summary
A power generating apparatus according to one embodiment of the present invention includes a duct through which a first fluid passes, a first thermoelectric module and a second thermoelectric module disposed on a first surface of the duct to be spaced apart from each other, a connector disposed between the first thermoelectric module and the second thermoelectric module on the first surface of the duct, and a shield member disposed on the connector on the first surface of the duct, wherein the shield member includes a first face and a second face having a height higher than a height of the first face.