Thermal-to-Electric Conversion Using Electrostatic Coupling
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Solution Overview
Problem
Current thermal-to-electric energy conversion methods are limited in power throughput and efficiency, particularly in the transfer of coherent excitation across gaps in thermo-photovoltaic approaches.
Innovation Solution
A novel thermal-to-electric conversion method utilizing electrostatic coupling between a hot-side surface and a cold-side surface separated by a small gas or vacuum gap, where the cold-side surface features a single-carrier converter chip structure, enabling efficient energy transfer and conversion through Coulomb electrostatic interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a vacuum gap is used in thermo-photovoltaic conversion, then excitation transfer efficiency is improved, but device complexity and fabrication difficulty increase
Solution Approach 1:
The patent introduces a dielectric layer as an intermediary substance filling the gap between hot-side and cold-side surfaces. This dielectric medium enables electrostatic coupling and coherent excitation transfer while avoiding the fabrication complexity of maintaining vacuum gaps. The dielectric serves as a mediator that facilitates energy transfer through its polarizable nature, resolving the contradiction between transfer efficiency and device complexity.
2Power
If coherent excitation transfer through electrostatic coupling is implemented, then power throughput increases, but manufacturing precision requirements increase
Solution Approach 1:
The patent changes the physical parameter of the gap medium from vacuum to dielectric material, which fundamentally alters the coupling mechanism. This parameter change enables electrostatic coupling that is less sensitive to precise gap control, as the dielectric's polarizability provides a more robust coupling mechanism that tolerates greater manufacturing variations in gap thickness.
3Loss of energy
If single-carrier converter structure is used, then conversion efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments the converter into distinct functional regions: a hot-side surface for thermal excitation, a dielectric gap for coupling, and a cold-side single-carrier converter structure for efficient charge separation. This segmentation allows each component to be optimized independently, achieving high conversion efficiency through the specialized single-carrier structure while managing overall device complexity through modular design.
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 approach enhances power throughput and efficiency by promoting cold-side carriers to higher energy states, allowing for effective electric energy generation and achieving high power density and efficiency in thermal-to-electric energy conversion.
Implementation Method 1
electrostatic coupling between a hot-side surface and a cold-side surface separated by a small gas or vacuum gap
Implementation Method 2
enabling efficient energy transfer and conversion through Coulomb electrostatic interaction
Implementation Method 3
thermo-photovoltaic approach
Data Source
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AI summary
An improved method and apparatus for thermal-to-electric conversion involving relatively hot and cold juxtaposed surfaces separated by a small vacuum gap wherein the cold surface provides an array of single charge carrier converter elements along the surface and the hot surface transfers excitation energy to the opposing cold surface across the gap through Coulomb electrostatic coupling interaction.