Frozen Cooling Bag with Alternating Perforations for Passive Air Conditioning
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Solution Overview
Problem
Existing air cooling devices, such as fans and air conditioners, are inefficient in providing air freshness and contribute to carbon emissions, which exacerbate global warming, and existing cooling bag systems do not effectively address temperature performance.
Innovation Solution
A cooling bag device with alternating perforations made of waterproof material, designed to be frozen and attached to air-propelling devices, enhancing air cooling and circulation while incorporating an air filter for purification, and using minimal energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air conditioners are used to cool the air, then the temperature of the interior is reduced, but carbon emissions increase and ecological impact worsens
Solution Approach 1:
The invention changes the cooling mechanism from mechanical refrigeration (air conditioners) to passive evaporative cooling using frozen water bags. By changing the physical state of water from liquid to solid in the freezer, then using it as a cooling medium, the system achieves temperature reduction without carbon emissions associated with conventional air conditioning systems.
Solution Approach 2:
The frozen water bags serve as self-contained cooling units that can be prepared in advance in a freezer and then deployed with any air-propelling device. The system uses the phase change of water (freezing and melting) as a natural, self-regulating cooling mechanism that requires no additional energy input or produces no harmful emissions during operation.
2Speed
If fans are used to circulate air, then air movement is achieved, but air cooling effectiveness is limited
Solution Approach 1:
The invention merges the air circulation function of fans with the cooling function of frozen water bags into a single integrated system. The fan propels air through or over the frozen bags, combining mechanical air movement with thermal cooling in one device, thereby achieving both air circulation and effective temperature reduction.
3Temperature
If air conditioners are used to cool interiors, then temperature control is achieved, but energy expenditure increases
Solution Approach 1:
The cooling effect is prepared in advance by freezing water bags in a freezer. This preliminary action stores thermal energy in the form of frozen water, which then provides passive cooling when deployed. The system shifts energy consumption to a preparatory phase rather than continuous operation, significantly reducing ongoing energy expenditure for cooling.
4Ease of operation
If cooling bags with simple perforations are used, then air passage is provided, but cooling efficiency and air path length are insufficient
Solution Approach 1:
The cooling bag is divided into multiple pockets with alternating perforations on different surfaces. This segmentation creates multiple air passage routes and increases the surface area for heat exchange. Air must travel through a longer, more complex path to exit the bag, enhancing cooling efficiency while maintaining simple operation.
Solution Approach 2:
Perforations are distributed across multiple dimensions and surfaces of the cooling bag rather than concentrated in one location. This multi-dimensional arrangement of perforations extends the air path length and increases contact between air and the cooling surface, improving thermal exchange efficiency.
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 solution provides constant air freshness with reduced energy expenditure and minimal carbon emissions by improving air cooling efficiency and incorporating air filtration without additional energy consumption.
Implementation Method 1
The bags are made of plastic or any other waterproof material containing water or a gel which, after being placed in a freezer to freeze
Implementation Method 2
cool the air it blows
Implementation Method 3
The pockets are fitted with perforations to allow the passage of air propelled by said device through said perforations
Implementation Method 4
The device also includes an air filter integrated with one of the aforementioned pockets
Data Source
Figure 1~2
Figure 3
AI summary
A cooling pack for fans is a waterproof product containing water or a gel that, after being frozen, is placed in front of a fan using a rigid support, either separate from or integrated into the fan. It is suspended from the fan by straps equipped with clips, Velcro, or other fastening methods. The cooling pack is the same size as the fan and has perforations that allow the air circulated by the fan to cool the air without expelling hot air outside the room, as an air conditioner does. It is equipped with a color-coded indicator that shows its temperature. The cooling pack can also be combined with an air filter, allowing for air purification without additional energy expenditure.