Ultrasonic Methanol Fuel Atomization for Stable Fuel Cell Discharge
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Solution Overview
Problem
The existing methods for improving the performance of methanol fuel cells, such as those proposed by Wuhan University of Technology, face feasibility issues due to limited space in the narrow channels, making them difficult to apply in practical industrial settings.
Innovation Solution
An ultrasonic methanol fuel cell system that converts liquid fuel to gas fuel using an ultrasonic fuel atomization mechanism and a mist-transporting booster pump, which atomizes the fuel into a mist state and transports it to the methanol fuel cell body for enhanced chemical reactions, improving steady-state discharge performance and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ultrasonic transducers are set up on the fuel supply channel to atomize fuel, then the steady-state discharge performance is improved, but the device complexity increases and space requirements are not met
Solution Approach 1:
The patent extracts the ultrasonic atomization function from the fuel supply channel and relocates it to a separate fuel storage chamber. This separation removes the complexity from the narrow fuel channel while preserving the atomization benefit, allowing the ultrasonic transducer to operate in a dedicated space without constraining the fuel cell's internal flow paths.
Solution Approach 2:
The fuel delivery system is segmented into distinct functional modules: a fuel storage chamber with ultrasonic atomization capability, a fuel pump, and the fuel cell stack. This modular segmentation allows the atomization subsystem to be optimized independently, improving steady-state performance without complicating the overall fuel cell architecture.
2Productivity
If ultrasonic transducers are installed in the fuel channel, then fuel atomization is achieved, but the limited space in narrow channels makes implementation difficult
Solution Approach 1:
The patent transitions the atomization process from a one-dimensional linear fuel channel to a three-dimensional fuel storage chamber. This dimensional change provides ample space for the ultrasonic transducer and fuel reservoir, eliminating spatial constraints while maintaining efficient fuel atomization through the same ultrasonic mechanism.
3Device complexity
If liquid fuel is used directly, then the system is simple, but the energy utilization rate and power generation efficiency are low
Solution Approach 1:
The patent changes the physical state parameter of the fuel from liquid to aerosol mist through ultrasonic atomization. This parameter transformation dramatically increases the fuel's surface area and volatility, enabling much higher energy utilization rates and power generation efficiency while maintaining relative system simplicity through the addition of only one component: the ultrasonic transducer.
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 system enhances the performance and energy efficiency of methanol fuel cells by ensuring sufficient fuel supply, improving power generation per liter of fuel, and is economically viable due to its simple structure and easy implementation, while also addressing low power generation efficiency and cold environment operation challenges.
Implementation Method 1
the ultrasonic atomizer module is provided at a bottom of the fuel storage chamber... atomizes the fuel into a mist state
Data Source
AI summary
An ultrasonic methanol fuel cell system converting liquid fuel to gas fuel, including a methanol fuel cell body, an ultrasonic fuel atomization mechanism, a mist-transporting booster pump; the ultrasonic fuel atomization mechanism includes a fuel storage chamber, an ultrasonic atomizer module, a mist output pipe and an internal pressure equalizer; the ultrasonic atomizer module is provided at the bottom of the fuel storage chamber; the mist output pipe is provided above the ultrasonic atomizer module; the internal pressure equalizer is connected with the mist output pipe; a pressure equalizing valve is connected to the outer end of the internal pressure equalizer; the mist-transporting booster pump is connected between the fuel input port and the mist output pipe. Fuel is atomized via the ultrasonic fuel atomization mechanism, and is then transported by the mist-transporting booster pump to the methanol fuel cell body for chemical reactions to be converted into electrical energy.