Watercraft Engine Operation Using Solar-Synthesized Methanol Fuel
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Solution Overview
Problem
Current mobility solutions, particularly in watercraft, face significant environmental challenges due to greenhouse gas emissions from fossil fuel combustion, necessitating a climate-friendly alternative that is economically viable and efficient.
Innovation Solution
A method utilizing methanol produced through electrolysis of water and carbon dioxide extraction from the air, powered by solar energy, for use in internal combustion engines of hybrid-electric watercraft, enabling climate-neutral operation and reducing carbon dioxide emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If fossil fuels are used for watercraft propulsion, then energy density and power output are maintained, but greenhouse gas emissions and environmental pollution increase significantly
Solution Approach 1:
The patent changes the chemical composition parameter of the fuel from fossil-based hydrocarbons to synthetic methanol (CH3OH) produced from CO2 and H2. This parameter change maintains energy density while eliminating net greenhouse gas emissions, as the CO2 released during combustion was previously captured from the atmosphere
Solution Approach 2:
The patent converts the harmful factor of CO2 emissions into a beneficial resource by capturing CO2 from ambient air and using it as a feedstock for methanol synthesis. The CO2 that would normally be harmful waste is transformed into a valuable fuel component, creating a closed carbon cycle
2Object-affected harmful factors
If synthetically produced methanol is used as fuel, then climate neutrality is achieved, but production complexity and infrastructure requirements increase
Solution Approach 1:
The patent divides the complex methanol production process into separate functional modules: CO2 capture unit, H2 production unit (via electrolysis), and methanol synthesis unit. This segmentation allows each component to be optimized independently and facilitates modular deployment and scaling of the system
Solution Approach 2:
The patent creates a multi-functional system where the same infrastructure can serve multiple purposes: CO2 capture for atmospheric carbon removal, H2 production for fuel synthesis, and methanol production for energy storage and transport. This universal approach allows the system to address multiple climate challenges simultaneously
3Object-affected harmful factors
If renewable energy sources are used to power electrolysis and CO2 capture, then climate neutrality is achieved, but energy availability and consistency are reduced
Solution Approach 1:
The patent creates a self-service energy system where excess renewable electricity is converted into storable chemical energy (methanol) that can be used during periods of low renewable generation. The system serves itself by using its own renewable power to produce fuel that ensures continuous operation, eliminating dependence on external energy supplies
Solution Approach 2:
The patent utilizes phase transitions in the form of energy storage: converting electrical energy (intangible) into chemical energy in liquid methanol (tangible, storable). This phase transition allows energy to be stored in a concentrated, transportable form that can bridge periods when renewable generation is insufficient
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 approach allows for climate-neutral recreational and goods transport, offering higher energy density and faster refueling compared to traditional fuels, with potential for global implementation and reduced infrastructure costs.
Implementation Method 1
a photovoltaic unit absorbs solar energy and converts it into electrical energy
Implementation Method 2
in an electrolysis unit for the production of hydrogen, water is split into hydrogen and oxygen
Implementation Method 3
a carbon dioxide sorption unit extracts carbon dioxide from the ambient air
Implementation Method 4
the hydrogen and the carbon dioxide are fed to a methanol synthesis unit for the production of methanol, and are synthesised therein to methanol
Implementation Method 5
The methanol produced is transported by means of a distributor system to at least one tank of the watercraft, and is fed from the tank to the internal combustion engine as required, and therein is combusted to generate mechanical energy
Data Source
AI summary
The disclosure relates to a method for operating an internal combustion engine of a watercraft, in particular on inland waters, in which (i) in an electrolysis unit for the production of hydrogen, water is split into hydrogen and oxygen, (ii) a carbon dioxide sorption unit extracts carbon dioxide from the ambient air, (iii) the hydrogen and the carbon dioxide are fed to a methanol synthesis unit for the production of methanol, and are synthesized therein to methanol, (iv) a photovoltaic unit absorbs solar energy and converts it into electrical energy. The electrolysis unit, the carbon dioxide sorption unit and the methanol synthesis unit are powered by the electrical energy generated in the photovoltaic unit. The methanol produced is transported by means of a distributor system to at least one tank of the watercraft, and is fed from the tank as required to the internal combustion engine, and therein is combusted to generate mechanical energy.