Oxygen Storage Material Combustion for Ceramic Membrane Stability
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Solution Overview
Problem
Current self-compacting combustion (SCC) processes face challenges with ceramic membranes due to brittleness, mechanical instability, and limited oxygen permeation at high temperatures and pressures, leading to inefficient energy production in combustion engines.
Innovation Solution
Incorporating oxygen storage materials with high reduction enthalpy into the combustion space, allowing for efficient oxygen supply and storage, and using a configuration with multiple reaction chambers for controlled combustion and regeneration, along with internal cooling to manage temperature and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If ceramic membranes are used for oxygen transport in SCC process, then oxygen permeation is improved, but mechanical stability deteriorates due to brittleness and vulnerability to vibrations
Solution Approach 1:
The patent extracts the oxygen transport function from the membrane wall structure and relocates it to a dedicated oxygen transport membrane module (OTM) that can be independently optimized. The membrane is separated from the structural load-bearing components, allowing thin-walled high-permeability membranes to be used without compromising mechanical stability.
Solution Approach 2:
The patent implements vibration isolation measures and mechanical cushioning for the membrane structure before vibrations occur. The membrane mounting system includes damping elements and flexible connections that protect the brittle ceramic membrane from vibration-induced failures during combustion engine operation.
2Quantity of substance
If membrane wall thickness is reduced to increase oxygen flow, then oxygen permeation is improved, but mechanical strength deteriorates
Solution Approach 1:
The oxygen transport function is extracted from the load-bearing wall structure and placed in a dedicated OTM module. This allows the use of extremely thin membrane walls (optimized for oxygen permeation) without compromising the mechanical strength of the combustion chamber, as the membrane is no longer required to bear structural loads.
Solution Approach 2:
The patent employs composite structures combining ceramic membrane materials with supportive matrix materials or coating layers. This composite approach enables thin membrane walls to maintain sufficient mechanical strength while maximizing oxygen permeation surface area and flow capacity.
3Use of energy by moving object
If high combustion pressures and temperatures are aimed for to increase efficiency, then energy efficiency is improved, but membrane stability deteriorates
Solution Approach 1:
The patent segments the combustion chamber into multiple zones with different temperature and pressure conditions. The OTM module is positioned in a zone optimized for oxygen transport, while other zones handle high-temperature combustion and expansion, allowing each component to operate within its optimal stability range.
Solution Approach 2:
The patent introduces cooling channels and thermal barrier layers as intermediary structures between the high-temperature combustion zone and the oxygen transport membrane. These intermediaries protect the membrane from excessive thermal stress while allowing it to operate at temperatures optimal for oxygen permeation.
4Productivity
If compression of combustion air is eliminated to increase expansion work, then productivity is improved, but oxygen supply control deteriorates
Solution Approach 1:
The patent implements feedback control systems that monitor combustion chamber conditions (oxygen partial pressure, temperature, pressure) and dynamically adjust the oxygen transport through the membrane. This allows precise control of oxygen supply rates without requiring mechanical compression, maintaining optimal combustion conditions throughout the expansion process.
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 energy efficiency by maintaining high pressures and temperatures while reducing mechanical stress on membranes and managing heat release, enabling more efficient mechanical work from combustion gases.
Implementation Method 1
an oxygen storage material is provided in the combustion space so that a self-compacting combustion process is made possible by storing the oxygen in the oxygen storage material in the combustion space
Implementation Method 2
storing the oxygen in the oxygen storage material in the combustion space
Data Source
AI summary
The invention relates to a combustion engine and to a process for producing energy by means of expansion work in combustion engines. The invention is based on the problem of providing a possibility for supplying oxygen to the combustion space of a self-compacting combustion engine in an energy-efficient manner. According to the invention, with an arrangement for carrying out an intensified combustion for automatically increasing pressure of the combustion gases and using them in a combustion engine for performing mechanical work, the above-stated problem is solved in that an oxygen storage material is present in the combustion space so that a self-compressing combustion process is made possible by storing the oxygen in the oxygen storage material in the combustion space.