Fuel Cell Membrane Humidifier With Variable Flow Split
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Solution Overview
Problem
Current fuel cell systems require separate components for humidification and heat exchange, leading to increased size, complexity, and pressure loss, making them unsuitable for miniaturization and packaging applications.
Innovation Solution
A fuel cell membrane humidifier with a housing unit containing both a humidification module using hollow fiber membranes for moisture exchange and a heat exchange module, along with a channel valve for variable distribution of the fluid, allowing for simultaneous humidification and cooling in a single unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate components are used for humidification and heat exchange, then each component can be optimized independently, but the overall system size and complexity increase
Solution Approach 1:
The patent combines the humidification module and heat exchange module into a single integrated membrane humidifier unit. The housing contains both modules that share common fluid pathways and control systems, reducing the number of separate components while maintaining independent optimization of each function through modular internal design.
Solution Approach 2:
The integrated membrane humidifier performs multiple functions simultaneously: humidification through moisture exchange across the membrane, heat exchange through the heat exchange module, and fluid distribution through the channel valve. This multi-functional design reduces system complexity while maintaining optimization capability.
2Ease of repair
If separate components are used for humidification and heat exchange, then maintenance is easier, but the system occupies more space
Solution Approach 1:
The patent integrates humidification and heat exchange functions into a single compact unit, significantly reducing the overall system volume. The shared housing and fluid pathways eliminate the need for separate component mounting spaces while maintaining access to both modules for maintenance purposes.
3Reliability
If separate components are used for humidification and heat exchange, then each component can be optimized for its function, but pressure loss increases
Solution Approach 1:
The integrated design allows the first fluid to flow sequentially through the humidification module and heat exchange module within a single housing, eliminating the need for separate inlet/outlet connections and reducing pressure loss. The channel valve optimizes flow distribution to minimize energy loss while maintaining functional optimization.
Solution Approach 2:
The continuous flow path through both modules within the integrated unit maintains steady fluid movement without interruption, reducing turbulence and pressure losses that would occur with separate component connections and fittings.
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 simplifies and miniaturizes the fuel cell system by integrating humidification and heat exchange functions, reducing size and complexity while maintaining efficient operation.
Implementation Method 1
a plurality of hollow fiber membranes, moisture exchange being performed between a first fluid and a second fluid through the plurality of hollow fiber membranes
Implementation Method 2
a heat exchange module disposed in the second space, the heat exchange module being configured to cool the first fluid introduced thereinto
Data Source
AI summary
The present invention relates to a membrane humidifier for a fuel cell capable of simplifying a fuel cell system and miniaturizing the fuel cell system by performing humidification by moisture exchange and cooling by heat exchange in one membrane humidifier, and a fuel cell system comprising same. The membrane humidifier for a fuel cell of the present invention comprises both a humidification module and a heat exchange module in a housing part, and distributes a first fluid to the humidification module and the heat exchange module at a variable distribution ratio.