Modular Fuel Cell System with Integrated Chamber Design
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Solution Overview
Problem
The high operating temperature of solid oxide fuel cell systems leads to energy inefficiencies due to the need for high energy-consuming electronic gas heaters and significant heat loss through complex piping, as well as the inability to effectively reuse waste heat.
Innovation Solution
A modular fuel cell system design where a start burner, reformer, and heat exchanger are integrated within a single chamber, allowing for uniform temperature distribution and real-time heat source control, reducing the number of thermal cycles and eliminating the need for high energy-consuming components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If electronic gas heater is used to supply high temperature for fuel cell operation, then the required operating temperature is achieved, but energy consumption increases significantly
Solution Approach 1:
The patent combines the heater and fuel cell into a single integrated device where the heater serves dual purposes: heating the fuel cell to operating temperature and serving as the fuel cell's power generation component. This eliminates the need for separate high energy-consuming heating devices while achieving the required 800-1000°C operating temperature.
Solution Approach 2:
The patent converts the waste heat that would normally be lost during fuel cell operation into useful energy by using it to preheat the incoming fuel gas and maintain operating temperature. This transforms the harmful heat loss into a beneficial heating source, significantly reducing external energy consumption.
2Reliability
If complex piping is used to connect components in fuel cell system, then component functionality is maintained, but heat loss along pipeline increases
Solution Approach 1:
The patent merges multiple components (heater, fuel cell, reformer) into a single integrated apparatus with shared internal pathways. This eliminates complex external piping connections between components, thereby reducing heat loss along pipelines while maintaining all necessary functional connections through internal integrated structures.
3Device complexity
If high temperature waste heat is discharged without reuse, then system simplicity is maintained, but energy efficiency decreases and environmental harm increases
Solution Approach 1:
The patent captures the waste heat generated during fuel cell operation and redirects it to preheat the incoming fuel gas and maintain the operating temperature of the system. This converts the harmful waste heat into a useful energy source, improving overall energy efficiency without significantly increasing system complexity.
Solution Approach 2:
The patent establishes a continuous heat recycling loop where waste heat from the fuel cell reaction continuously preheats incoming fuel and maintains operating temperature. This creates a self-sustaining thermal cycle that maximizes energy utilization and minimizes waste heat discharge throughout continuous operation.
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 design enhances efficiency by minimizing heat loss, utilizing waste heat effectively, and achieving stable temperature regulation, resulting in a simplified, safe, and high-efficiency fuel cell system.
Implementation Method 1
a start burner (102), a reformer (104), an after-burner (106), and a heat exchanger (108) are disposed in the chamber (100)
Implementation Method 2
the feeding material is reformed first to generate the reformed gas mixture of hydrogen, carbon monoxide, carbon dioxide and steam
Implementation Method 3
the heat exchanger (108) surrounds the after-burner (106) and the reformer (104)
Implementation Method 4
an after-burner (106), and a heat exchanger (108) are disposed in the chamber (100). The start burner (102) is surrounded by the reformer (104), and the after-burner (106) is disposed on the start burner (102) and surrounds the reformer (104)
Implementation Method 5
the electrochemical reaction occurs between the hydrogen and the oxygen at the cathode to generate electricity
Data Source
AI summary
A modular apparatus of fuel cell system includes a start burner, a reformer, an after-burner, and a heat exchanger. The start burner, the reformer, the after-burner, and the heat exchanger are disposed in a chamber. The start burner is surrounded by the reformer, and the after-burner is disposed on the start burner and surrounds the reformer. The heat exchanger surrounds the after-burner and the reformer.