AMTEC Thermal Block Layout for Gravity-Driven Alkali Metal Regeneration
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Solution Overview
Problem
Existing solar AMTEC power systems rely on complex and costly mechanisms, such as pumps and wicks, for regenerating condensed alkali metal, which increases the likelihood of failure and overall system cost.
Innovation Solution
A solar AMTEC power system design incorporating a housing with a thermal barrier wall and carbon-based insulative material, such as coal-based carbon foam, to create a hot and cold chamber configuration that utilizes gravity-driven counterflow for alkali metal regeneration, eliminating the need for complex regeneration mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex mechanisms such as pumps and wicks are used for regenerating condensed alkali metal, then the alkali metal regeneration function is achieved, but the device complexity and likelihood of failure increase
Solution Approach 1:
The patent extracts and eliminates the complex regeneration mechanisms (pumps, wicks) from the system by utilizing the natural density difference between alkali metal and working fluid to achieve automatic separation and regeneration, thereby reducing device complexity and improving reliability
Solution Approach 2:
The system employs self-service regeneration where the density-driven natural circulation automatically separates condensed alkali metal from the working fluid and returns it to the heat source without external mechanical assistance, eliminating the need for complex regeneration equipment
2Reliability
If complex mechanisms such as pumps and wicks are used for regenerating condensed alkali metal, then the alkali metal regeneration function is achieved, but the system cost increases
Solution Approach 1:
The patent removes expensive mechanical components (pumps, wicks) from the regeneration system, replacing them with a passive density-driven circulation mechanism, thereby significantly reducing manufacturing costs while maintaining regeneration functionality
Solution Approach 2:
The system replaces expensive mechanical regeneration components with a simple, low-cost passive circulation design that uses readily available materials, reducing overall system manufacturing cost
3Loss of energy
If insulative material with low thermal conductivity is used between hot and cold chambers, then thermal efficiency is improved, but the material selection and manufacturing complexity increase
Solution Approach 1:
The patent employs composite insulative materials combining multiple layers or materials (such as ceramic coatings, foam insulation, or air gaps) to achieve optimal thermal insulation performance while managing manufacturing complexity through standardized composite material applications
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 the efficiency of thermal energy conversion to electrical energy by maintaining a temperature gradient across the AMTEC cells while reducing system complexity and cost, and increases the reliability of alkali metal regeneration through gravity-driven fluid flow.
Implementation Method 1
an insulative material disposed between the cold chamber and the hot chamber, the insulative material including carbon foam
Implementation Method 2
AMTEC power systems are configured to take advantage of temperature gradients across an AMTEC cell to convert thermal energy directly into electrical energy
Implementation Method 3
a beta-alumina solid electrolyte ('BASE'), which is an electronic insulator and an ionic conductor
Implementation Method 4
utilizes gravity-driven counterflow for alkali metal regeneration
Implementation Method 5
gravity-driven fluid flow
Data Source
AI summary
An AMTEC power system including a housing that defines a cold chamber and a hot chamber, an insulative material disposed between the cold chamber and the hot chamber, the insulative material including carbon foam, and at least one AMTEC cell received in the housing, the AMTEC cell extending into both the cold chamber and the hot chamber.