Thermionic Cooling Apparatus with Nano-Fluids
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Solution Overview
Problem
Existing thermal-transfer devices, such as those relying on vapor compression refrigeration cycles, are inefficient and environmentally degrading due to mechanical components and the use of atmosphere-degrading refrigerants.
Innovation Solution
A thermal-transfer apparatus utilizing thermal energy harvesting thermionic devices with nano-fluids and thermally insulating coatings to facilitate efficient cooling by transferring electrons between emitter and collector electrodes, reducing the need for mechanical components and environmentally harmful refrigerants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If vapor compression refrigeration cycles are used, then cooling effect is achieved, but mechanical components and atmosphere-degrading refrigerants are required
Solution Approach 1:
The patent replaces the mechanical vapor compression system with a thermionic cooling device that uses electron emission and ion transport to achieve heat pumping. The thermionic device uses electric fields and thermal fields instead of mechanical compressors and refrigerant cycles, eliminating moving parts and mechanical complexity while maintaining the cooling function.
2Temperature
If vapor compression refrigeration cycles are used, then cooling effect is achieved, but environmentally degrading refrigerants are required
Solution Approach 1:
The thermionic cooling device eliminates the need for refrigerants by using direct electron emission and ion transport through a vacuum or gas-filled gap between electrodes. The cooling effect is achieved through thermionic emission and electron heat pumping, completely removing harmful refrigerant substances from the system.
3Temperature
If vapor compression refrigeration cycles are used, then cooling function is provided, but efficiency is reduced
Solution Approach 1:
The patent employs nanostructured materials and optimized electrode geometries to enhance thermionic emission efficiency and electron transport. By changing the physical parameters at the nanoscale, including surface area to volume ratio and electron mean free path, the device achieves higher cooling coefficients and reduced energy losses compared to conventional macroscopic systems.
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 apparatus achieves efficient cooling without mechanical components and environmentally harmful refrigerants, providing a more efficient and sustainable cooling solution compared to traditional vapor compression systems.
Implementation Method 1
The first nanoparticles are configured to transfer electrons between the first emitter electrode and the first collector electrode during operation of the apparatus to cool the first emitter electrode
Implementation Method 2
at least one first thermal energy harvesting thermionic device positioned in a first passage extending through the first sheet
Implementation Method 3
first thermally insulating coatings respectively positioned on the first opposite surfaces of the first sheet
Implementation Method 4
The one or more first emitter-side thermal conductors are positioned adjacent to an outer surface of the first emitter electrode and in thermal communication with the first emitter electrode
Data Source
AI summary
Embodiments relate to systems designed for thermal transfer augmentation and thermionic energy harvesting. Thermionic energy harvesters are configured to supply electricity for applications such as electronics, communications, and other electrical devices. Thermal transfer may be used for a variety of heating/cooling and power generation/heat recovery systems, such as, refrigeration, air conditioning, electronics cooling, industrial temperature control, waste heat recovery, off-grid and mobile refrigeration, and cold storage.