Microbial Fuel Cell Dual Vent Ports Simplify Gas Supply
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing microbial fuel cells require complex piping designs and incur high costs for oxygen supply, especially for larger systems, and natural diffusion often fails to provide sufficient oxygen.
Innovation Solution
A microbial fuel cell design featuring a container unit with a communication port and an electrode unit including a gas-phase chamber, a positive electrode, a negative electrode, an ion transfer layer, and dual vent ports to simplify gas supply and enhance oxygen utilization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If oxidizing gas is supplied through multiple vent pipes pulled out from inside the electrolytic cell, then oxygen supply capability is improved, but piping configuration complexity increases
Solution Approach 1:
The patent combines multiple vent pipes into a single integrated vent pipe structure. The first and second vent ports are both connected to the external environment through one unified piping system, eliminating the need for separate piping configurations for each vent port while maintaining adequate oxygen supply capability.
2Device complexity
If oxygen is supplied by natural diffusion only, then piping complexity is reduced, but oxygen supply sufficiency deteriorates
Solution Approach 1:
The patent segments the oxygen supply function by providing two separate vent ports (first and second vent ports) within the gas-phase chamber. This segmentation allows oxygen to enter through multiple locations simultaneously, enhancing the total oxygen supply capability while keeping each individual vent port simple and suitable for natural diffusion.
3Power
If the microbial fuel cell size is increased, then power generation capacity is improved, but oxygen supply sufficiency by natural diffusion deteriorates
Solution Approach 1:
The patent transitions from a single-point oxygen supply approach to a multi-point distribution approach by implementing both first and second vent ports at different locations within the gas-phase chamber. This spatial distribution across multiple dimensions ensures adequate oxygen reach throughout larger fuel cell volumes, supporting enhanced power generation capacity.
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 design simplifies the piping configuration for oxidizing gas supply and ensures high utilization efficiency of oxygen, facilitating efficient power generation and organic matter decomposition.
Implementation Method 1
an ion transfer layer that is interposed between the positive electrode and the negative electrode, and has ion conductivity
Implementation Method 2
a gas-phase chamber; a positive electrode that is configured to be in contact with gas in the gas-phase chamber
Data Source
AI summary
A microbial fuel cell includes a container unit and an electrode unit. The container unit includes an electrolytic cell and a communication port. The electrode unit includes a gas-phase chamber, a positive electrode, a negative electrode that is configured to hold microbes, an ion transfer layer that is interposed between the positive electrode and the negative electrode, a first vent port, and a second vent port. The gas-phase chamber is communicated with the communication port through the second vent port.