Polymer Fuel Cell Manifold With Heat Shielding and Coolant Ducts
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Solution Overview
Problem
Existing fuel cell supply arrangements face challenges in achieving a balance between weight reduction, space efficiency, and heat resistance, particularly in aircraft applications where space and weight constraints are critical.
Innovation Solution
A heat-protecting fuel supply arrangement featuring a manifold made from polymeric materials, integrated with a heat protection shielding that mitigates thermal changes by protecting the fuel supply lines from external thermal sources, and utilizing a mantle structure with a heat dissipating substance reservoir to enhance thermal protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a manifold made from polymeric material is used to reduce weight, then weight is reduced, but heat resistance deteriorates
Solution Approach 1:
The patent employs a composite structure combining polymeric manifold material with a heat-reflective coating layer. The coating contains heat-reflective particles (such as aluminum oxide, titanium dioxide, or zinc oxide) dispersed in a binder, creating a composite material that maintains the lightweight advantage of polymers while adding thermal protection capabilities.
Solution Approach 2:
The heat-reflective coating acts as an intermediary layer between the polymeric manifold and external heat sources. This coating layer reflects and scatters thermal radiation, preventing direct heat transfer to the polymeric material and protecting it from thermal degradation.
2Temperature
If cooling is provided to the fuel supply line, then thermal changes are mitigated, but device complexity increases
Solution Approach 1:
The patent merges the cooling function with the existing fuel supply manifold structure by integrating coolant ducts directly into the manifold body. This allows the cooling system to utilize the same spatial envelope and structural framework as the fuel delivery system, reducing overall device complexity while providing effective thermal management.
Solution Approach 2:
The manifold is designed with multi-functionality, serving both as a fuel distribution network and as a cooling system housing. The coolant ducts integrated within or alongside the fuel supply lines enable the manifold to perform dual functions: delivering fuel to the fuel cell and removing heat from the fuel lines.
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
The solution provides a lighter, more adaptable, and adjustable fuel supply arrangement that effectively manages thermal stress, enhancing the safety and weight efficiency of fuel cell systems in aircraft applications.
Implementation Method 1
The heat protection shielding is arranged to protect at least a portion of an outer surface of the at least one fuel supply line against external thermal sources to mitigate thermal changes of the manifold
Implementation Method 2
The manifold is formed to supply the fuel cell with a fuel via the at least one fuel supply line and to provide cooling at least to the fuel supply line via the at least one coolant duct
Implementation Method 3
The heat protection shielding is configured to mitigate thermal changes of the manifold through the at least one coolant duct with a flow of coolant
Data Source
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AI summary
The present invention relates to a heat-protecting fuel supply arrangement. In order to provide for lighter fuel cells that are also suitable for adaptions a heat-protecting fuel supply arrangement (10) for a fuel cell (12) is provided. The heat-protecting fuel supply arrangement (10) comprises a manifold (14), being a duct arrangement (16) that comprises at least one fuel supply line (18) and at least one coolant duct (20) and a heat protection shielding (22). The manifold is formed to be mounted to an end connection portion (24) of the fuel cell. The manifold is formed to supply the fuel cell with a fuel (26) via the at least one fuel supply line and to provide cooling (28) at least to the fuel supply line via the at least one coolant duct. The manifold is made from a polymeric material (30). The structural integrity of the manifold is defined by the polymeric material. The heat protection shielding is arranged to protect at least a portion of an outer surface (32) of the at least one fuel supply line against external thermal sources (34) to mitigate thermal changes (36) of the manifold.