Galley Trolley Fuel Cell for Aircraft Emergency Power
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Solution Overview
Problem
The existing methods for emergency power supply in commercial aircraft using fuel cells are labor-intensive and safety-critical due to the handling of liquid hydrogen, which has hindered their widespread adoption in air traffic.
Innovation Solution
A modular, mobile energy supply unit designed as a galley trolley or luggage container equipped with a fuel cell system, which can be easily exchanged and recharged externally, utilizing existing catering supply chain infrastructure to minimize logistics and safety risks, and providing a self-sufficient power source that can be quickly connected to the emergency power grid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If fuel cells with liquid hydrogen are permanently installed in the cabin for emergency power supply, then continuous power generation capability is improved, but handling complexity and safety risks worsen due to labor-intensive refueling operations
Solution Approach 1:
The fuel cell system is divided into modular units that can be independently handled, stored, and replaced. Each module contains its own fuel cell, hydrogen storage, and control systems, allowing the complex system to be managed as separate, manageable components rather than a single integrated installation
Solution Approach 2:
The fuel cell power generation system is extracted from permanent cabin installation and placed in mobile containers or galley trolleys. This extraction allows the system to be moved to locations where refueling can be performed safely away from the passenger cabin, separating the power generation function from the hazardous refueling operation
2Reliability
If fuel cells are installed throughout the cabin for emergency power supply, then power availability is improved, but safety risks worsen due to labor-intensive liquid hydrogen handling
Solution Approach 1:
Mobile containers and galley trolleys serve as intermediary carriers between the hydrogen refueling infrastructure and the fuel cell power generation points. These intermediaries allow hydrogen to be transferred safely away from the passenger cabin, with the fuel cells themselves remaining installed in the cabin while the hazardous refueling operation occurs externally
Solution Approach 2:
Fuel cells are pre-loaded into mobile containers or galley trolleys with their required hydrogen supply before being brought onto the aircraft. This preliminary preparation of power units allows for safe, controlled refueling operations to occur ground-side using specialized equipment, eliminating the need for personnel to handle liquid hydrogen within the cabin during flight operations
3Ease of operation
If mobile energy supply units are used instead of permanently installed fuel cells, then ease of operation is improved through simple exchange procedures, but device complexity worsens due to modular system requirements
Solution Approach 1:
The fuel cell system is segmented into standardized modular units with uniform interfaces for electrical connections, hydrogen supply, and control systems. This segmentation enables different modules to be easily interchanged while maintaining system functionality, with each module being self-contained and independently replaceable
Solution Approach 2:
The mobile energy supply units are designed with universal interfaces and standardized mounting arrangements that allow the same basic module to serve multiple functions and locations within the aircraft. A single module design can be deployed in various positions (cabin, galley, cargo areas) with minimal adaptation, simplifying operations while managing complexity through standardization
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 reduces the load on the on-board network, ensures immediate availability of emergency power, and optimizes safety and cost by decoupling recharging from aircraft maintenance, allowing for efficient handling and relocation of energy supply units without additional logistics, and enabling weight reduction for short-haul flights.
Implementation Method 1
a fuel cell being used to generate electrical energy
Implementation Method 2
the hot water produced as a reaction product in the fuel cell
Data Source
Figure 1
AI summary
The method involves designing and handling or operating a power supply unit in a container that is in a form of a galley-trolley (1) or luggage or cargo container in a commercial aircraft. The power supply unit is attached to a local consumer network over docking interfaces (8). The docking interfaces are laid out for supplying heating and/or cooling units and lighting units in an on board kitchen and/or in the cargo. An independent claim is also included for a power supply unit comprising a container.