Non-invasive Thermal Fluid Mapping for Electrochemical Systems
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Solution Overview
Problem
Current water management strategies for electrochemical systems, such as fuel cells and electrolyzers, face challenges in achieving non-invasive, high-resolution water distribution mapping within flow fields without altering the system structure or using external heating sources.
Innovation Solution
A non-invasive dimensional thermal fluid mapping system that drives an electrochemical system's electrical state in a harmonic form to produce small cycling changes in temperature, allowing for lock-in phase mapping of temperature responses on both sides of the system using internal heating and thermal cameras, thereby visualizing water distribution without external excitation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external heating sources are used to map water distribution, then measurement precision is improved, but device complexity and invasiveness increase
Solution Approach 1:
The electrochemical system's own operational heating is utilized as the excitation source for thermal mapping. The system generates its own thermal signals through normal electrochemical reactions, eliminating the need for external heating devices and structural modifications while maintaining measurement capability
Solution Approach 2:
The patent replaces mechanical/external heating systems with an electrical field-based approach. By applying harmonic electrical excitation to the electrochemical system, thermal responses are generated internally without requiring physical contact or external heating apparatus
2Measurement precision
If external heating sources are used to map water distribution, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The system uses its own operational characteristics (electrochemical reactions and associated heating) to generate the thermal signals needed for mapping. This self-service approach eliminates the operational complexity of managing external heating equipment while maintaining high measurement precision
3Measurement precision
If system structure is altered to enable water mapping, then measurement precision is improved, but adaptability deteriorates
Solution Approach 1:
The electrochemical system's operational heating serves dual purposes: maintaining normal electrochemical function and providing excitation signals for thermal water mapping. This multi-functionality allows the same system to be used across different electrochemical applications without requiring structure-specific modifications
Solution Approach 2:
By utilizing the system's own operational characteristics rather than requiring structural alterations, the method maintains broad adaptability across different electrochemical system designs while achieving precise water distribution mapping
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 enables high-resolution, non-invasive water distribution mapping within electrochemical systems, providing accurate 2D and 3D maps of water and air distribution, detecting accumulation or blockages, and improving system performance and lifetime analysis without modifying the system or using external heating.
Implementation Method 1
drive an electrical state of an electrochemical system in a harmonic form to produce small cycling changes in system temperature
Implementation Method 2
Lock-in phase mapping may be employed on recorded temperature responses on the front and rear sides of the electrochemical system
Data Source
AI summary
A dimensional thermal fluid mapping system. The system includes an internal fluid device having one or more internal channels configured to contain a fluid. The internal fluid device has a first surface and an opposing second surface. The system includes an electrical device applying an electrical state to the first or second surface of the internal fluid device to induce a cycling change in an internal temperature of the internal fluid device. The system further includes a thermal measuring device configured to record a first temperature response on the first surface and a second temperature response on the second surface indicative of a dimensional fluid mapping with the one or more channels.