Catalyst Material Ignition and Temperature Sensing for Hydrogen Heating
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Solution Overview
Problem
Existing heating devices for buildings, particularly condensing boilers, face challenges in efficiently igniting and monitoring hydrogen-rich fuel gases due to the limitations of conventional ignition and flame monitoring methods, leading to increased costs and complex integration requirements.
Innovation Solution
A heating device that uses a catalyst material, preferably platinum, to ignite hydrogen-rich fuel gases within the combustion chamber, where the catalyst material also functions as a temperature sensor to monitor combustion, eliminating the need for separate ignition and monitoring units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electric spark or glow element ignition is used for hydrogen-rich fuel gases, then ignition can be achieved, but additional thermal energy and separate ignition units are required, increasing device complexity and costs
Solution Approach 1:
The patent combines the ignition function and flame monitoring function into a single catalyst material component. The catalyst material serves dual purposes: igniting the hydrogen-rich fuel gas by providing activation energy through catalytic action, and simultaneously monitoring the flame through temperature sensing integrated into the same component. This eliminates the need for separate electric spark igniters and monitoring units, thereby reducing device complexity while maintaining ignition reliability.
Solution Approach 2:
The catalyst material is designed to perform multiple functions within a single component: catalytic ignition of hydrogen fuel, temperature sensing for flame monitoring, and potentially control signaling. This multi-functionality approach replaces what would traditionally require separate specialized components for each function, thus resolving the contradiction between reliable ignition and device complexity.
2Reliability
If separate ignition units and monitoring units are used in condensing boilers, then both functions can be performed, but integration costs and product costs increase
Solution Approach 1:
The patent merges separate ignition units and monitoring units into a single integrated catalyst material component. This consolidation reduces the number of parts that need to be manufactured, assembled, and integrated, thereby lowering manufacturing costs and integration costs while maintaining the reliability of combustion control through the dual functionality of the catalyst material.
3Measurement precision
If electrodes are placed in the combustion chamber for flame monitoring, then monitoring can be achieved, but high geometric positioning requirements increase device complexity
Solution Approach 1:
The patent extracts the monitoring function from separate electrodes and integrates it directly into the catalyst material itself. The temperature sensor is formed with or integrated into the catalyst material, eliminating the need for separate electrodes positioned in the combustion chamber. This reduces geometric positioning requirements and device complexity while maintaining measurement precision for flame monitoring.
4Measurement precision
If conventional flame monitoring methods measuring ionization current are used for hydrogen-rich gases, then monitoring can be performed, but these methods are ineffective for hydrogen since no ionized carbon-based intermediates occur during hydrogen combustion
Solution Approach 1:
The patent changes the monitoring parameter from measuring ionization current (which relies on carbon-based intermediates) to measuring temperature directly through a temperature sensor integrated into the catalyst material. This parameter change makes the monitoring method effective for hydrogen-rich gases, as temperature measurement is universally applicable to all combustion processes regardless of the specific chemical intermediates produced.
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 solution enables efficient ignition and monitoring of hydrogen-rich fuel gases without additional thermal energy, reducing costs and complexity by integrating ignition and monitoring functions within the catalyst material, ensuring reliable and safe operation.
Implementation Method 1
a catalyst material, such as platinum, is placed in the gas-air mixture flow in the heater described here. Due to its properties, the catalyst material should enable the necessary activation energy to start the reaction without additional thermal energy (or ignition sparks).
Implementation Method 2
a temperature sensor for monitoring the combustion is formed in the region of the catalyst material and wherein the temperature sensor is formed with the catalyst material
Data Source
Figure 1~2
AI summary
The invention relates to a heating appliance (1) for a building, in which a fuel gas-air mixture flow (2) is fed into a combustion chamber (3) and ignited there, characterized in that the heating appliance (1) is designed to burn a fuel gas containing predominantly hydrogen, that a catalyst material (4) is arranged in the heating appliance (1) to ignite the fuel gas-air mixture, that a temperature sensor for monitoring the combustion is formed in the area of the catalyst material (4), and that the temperature sensor is formed with the catalyst material (4).