Device for the combined reduction of the carbon dioxide and water or moisture content, motor vehicle, and method
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Solution Overview
Problem
In partially electrically driven motor vehicles, recirculating air conditioning systems struggle to maintain low carbon dioxide and water content levels, leading to fogging and potential health hazards, as the moisture-removing effect of air conditioning devices is not utilized in recirculating operation, and high CO2 levels can impair concentration and safety.
Innovation Solution
A device with two sorption units, each capable of alternating between sorption and desorption modes, using sorbents to adsorb and desorb CO2 and water from the air, allowing for continuous reduction of CO2 and water content without external air intake, using an air distribution system controlled by sensors to manage the sorption units' modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If recirculating operation is used to save energy, then energy consumption is reduced, but carbon dioxide and water content accumulate in the passenger compartment
Solution Approach 1:
The air treatment system is segmented into multiple sorption units (at least two) that can operate independently in sorption and desorption modes, allowing continuous CO2 and water removal while maintaining recirculating operation for energy savings
Solution Approach 2:
The sorption units change their operational parameter between sorption mode (removing CO2 and water) and desorption mode (regenerating the sorbents), enabling continuous operation without interrupting the recirculating air conditioning system
2Use of energy by moving object
If recirculating operation is used, then energy consumption is reduced, but fogging of window panes occurs due to water accumulation
Solution Approach 1:
The system uses multiple sorption units operating in parallel with different modes, ensuring continuous water vapor removal to prevent condensation and fogging while maintaining energy-efficient recirculating operation
Solution Approach 2:
By having one sorption unit in sorption mode while another is in desorption mode, the system ensures continuous water vapor removal without interruption, preventing fogging throughout operation
3Use of energy by moving object
If recirculating operation is used, then energy consumption is reduced, but carbon dioxide accumulation impairs health and concentration
Solution Approach 1:
The air treatment system is divided into multiple sorption units that continuously remove CO2 from recirculated air, maintaining safe CO2 levels while preserving energy savings from recirculating operation
Solution Approach 2:
The sorption units alternately switch between CO2 sorption mode and desorption mode, ensuring continuous CO2 removal capability while regenerating sorbent capacity without interrupting the recirculating operation
4Quantity of substance
If external air intake is used to remove CO2 and water, then CO2 and water content is reduced, but energy consumption increases and filter load increases
Solution Approach 1:
The sorption units change their operational state between sorption and desorption modes, enabling continuous CO2 and water removal from recirculated air without requiring external air intake, thus maintaining energy efficiency
Solution Approach 2:
The alternating operation of multiple sorption units ensures continuous CO2 and water removal capability, maintaining low concentrations without the need for energy-intensive external air intake or increased filtration
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 effectively maintains low CO2 and water levels in the vehicle, preventing fogging and health risks, while reducing energy consumption by avoiding external air intake, thus extending vehicle range and reducing filter load, and enabling smaller air conditioning system components.
Implementation Method 1
a first sorption unit (6) for combined sorption of carbon dioxide and water, a second sorption unit (7) for combined sorption of carbon dioxide and water, wherein the first sorption unit (6) and the second sorption unit (7) each contain a plurality of sorbents
Implementation Method 2
the sorption units each can be transferred from a sorption mode, in which the sorption units sorb carbon dioxide and water from raw air of the enclosed air volume, into a desorption mode, in which the sorption units desorb carbon dioxide and water to supplied regeneration air
Data Source
AI summary
A device for reducing a carbon dioxide and water content in an enclosed air volume has first and second sorption units for sorbing carbon dioxide and water. The first and second sorption units can be transferred from a sorption mode into a desorption mode and vice versa. In the sorption mode, the first and second sorption units sorb carbon dioxide and water from raw air of the enclosed air volume. In the desorption mode, the first and second desorption units desorb carbon dioxide and water to supplied regeneration air. An air distribution device can switch the first and second sorption units, based on the carbon dioxide and water content, alternately from sorption mode into desorption mode such that, in at least one operating state of the device, one of the first and second sorption units is in sorption mode while the other is in desorption mode.