Fungal-Based Air Cooling System Using Evaporative Transpiration
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Solution Overview
Problem
Current air cooling technologies are inefficient in reducing temperature with minimal energy demand and low carbon emissions, particularly in addressing the global warming crisis and the need for cooling in domestic and commercial settings.
Innovation Solution
A fungal-based air cooling system utilizing mushrooms' evaporative cooling capacity, where a housing with a fungal specimen is used to cool air through evaporative processes, driven by an exhaust fan and powered by alternative energy sources like solar cells, with a HEPA filter to prevent spore dispersal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional air cooling technologies are used, then cooling effect is achieved, but energy consumption is high and carbon emissions increase
Solution Approach 1:
The patent utilizes evaporative cooling through phase transition of water from liquid to vapor. Fungal specimens naturally transpire water, absorbing latent heat of vaporization from the surrounding air, thereby cooling it. This biological phase transition process replaces energy-intensive mechanical compression and refrigeration cycles, achieving cooling with minimal external energy input.
Solution Approach 2:
The fungal specimens perform self-service cooling through their natural physiological processes. The fungi autonomously regulate water transpiration through their cellular structures, maintaining their own thermal balance while simultaneously cooling the surrounding air. This eliminates the need for external power sources, controllers, or maintenance, achieving cooling functionality through the fungi's inherent biological capabilities.
2Temperature
If conventional air cooling technologies are used, then cooling effect is achieved, but carbon emissions increase
Solution Approach 1:
By utilizing the natural evaporative cooling phase transition of water through fungal transpiration, the system replaces fossil fuel-based or electricity-intensive cooling methods that generate carbon emissions. The phase change process itself is carbon-free, absorbing heat purely through thermodynamic principles without any combustion or electrical power generation involved.
Solution Approach 2:
The autonomous biological process of fungal transpiration generates cooling effects without any external energy input or carbon-emitting operations. The fungi self-regulate their water vapor release based on environmental conditions, providing a completely passive, carbon-free cooling mechanism that eliminates the need for power plants, electrical grids, or fuel combustion associated with conventional cooling systems.
3Use of energy by moving object
If fungal specimens are used for cooling, then energy consumption is reduced, but device complexity increases due to growth requirements
Solution Approach 1:
The housing structure serves multiple functions simultaneously: it provides structural containment, regulates microclimate conditions for fungal growth, facilitates air circulation, and collects cooled air for distribution. This multi-functionality consolidates what would otherwise require separate systems into a single integrated unit, managing growth complexity while maintaining energy efficiency.
Solution Approach 2:
The system exploits the fungi's natural adaptability to a range of environmental parameters rather than requiring precise control. By designing the housing to maintain parameters within acceptable ranges (temperature, humidity, airflow) rather than at fixed setpoints, the system reduces control complexity while still enabling effective cooling through fungal transpiration.
4Object-generated harmful factors
If fungal specimens are used for cooling, then carbon emissions are reduced, but cooling speed is slower compared to conventional systems
Solution Approach 1:
The cooling process is segmented into multiple stages: water absorption by fungal tissues, gradual transpiration through cellular structures, and progressive cooling of surrounding air. Multiple fungal specimens work in parallel, each contributing to the overall cooling effect. This segmentation distributes the cooling load across many individual units, achieving cumulative cooling power that can meet practical requirements despite the inherently gradual nature of biological processes.
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 effectively reduces air temperature by approximately 10°C in 25 minutes with minimal energy consumption and zero carbon emissions, leveraging the natural hypothermic properties of fungi to provide a sustainable cooling solution.
Implementation Method 1
Mushroom pilei were noted to be cold relative to their surroundings. The first study inserted thermocouple detectors into mushrooms and suggested that the relatively cold temperatures were mediated by evaporative cooling.
Implementation Method 2
The transpiration rate of A. bisporous whole mushrooms has been studied and there are mathematical models to link mushroom water loss with ambient temperature and relative humidity.
Implementation Method 3
An exhaust fan to drive the flow of the fluid out of the housing
Implementation Method 4
powered by alternative energy sources like solar cells
Implementation Method 5
with a HEPA filter to prevent spore dispersal
Data Source
AI summary
A cooling device according to the present invention includes a housing configured to accommodate fungi. Warm air enters the housing through an inlet located in the housing. The air flows through the housing, which holds fungi. The air exits the housing and can be driven by an exhaust fan. In some embodiments, a HEPA filter is included to purify the air and prevent dispersal of fungal spores.