Hydrophilic Dermal Heatsink Coating for Evaporative Cooling
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Solution Overview
Problem
Existing heat transfer technologies fail to efficiently cool the human body, particularly in high-sweat regions, due to limitations in moisture wicking and contaminant resistance.
Innovation Solution
A dermal heatsink with a thermally conductive substrate and a hydrophilic, contaminant-resistant coating that wicks moisture from the skin, transports it through an open network of pores, and evaporates it on an external surface, enhancing heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing heat transfer technologies are used, then heat dissipation is achieved, but moisture wicking efficiency is insufficient and contaminant resistance is poor
Solution Approach 1:
The patent employs a porous coating material applied to the heatsink surface that creates capillary channels for efficient moisture wicking. The porous structure allows sweat to be drawn along the pores while the material composition provides contaminant resistance, simultaneously improving moisture management and heat dissipation efficiency
Solution Approach 2:
The invention uses a composite coating comprising a porous base material combined with hydrophilic and contaminant-resistant properties. This composite structure integrates multiple functions: the porous framework enables moisture transport, while the coating composition provides both hydrophilicity for sweat absorption and contaminant resistance, resolving the contradiction between heat dissipation performance and reliability in sweaty conditions
2Temperature
If a coating is applied to enhance moisture wicking, then evaporative cooling is improved, but thermal conductivity may decrease
Solution Approach 1:
The porous coating is designed with controlled porosity and pore size that balances two functions: providing sufficient capillary action for moisture wicking to enhance evaporative cooling, while maintaining adequate thermal conductivity through the coating layer. The porous structure allows heat to conduct through the solid framework while simultaneously enabling moisture transport for evaporative cooling
Solution Approach 2:
The coating parameters including porosity, pore size, thickness, and material composition are optimized to achieve the desired balance. By adjusting these parameters, the coating provides sufficient capillary pressure for moisture uptake and transport while maintaining thermal conductivity high enough to support effective heat dissipation from the heatsink
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 dermal heatsink effectively cools the body by increasing the rate of evaporative cooling, maintaining high thermal conductivity, and resisting contaminants, thus providing efficient heat transfer and comfort.
Implementation Method 1
The substrate and the coating cooperate to wick moisture from a surface of the heat source, through the void network, to the exterior surface
Implementation Method 2
a coating defining a porous, hydrophilic material; The substrate and the coating cooperate to wick moisture
Implementation Method 3
evaporates it on an external surface, enhancing heat dissipation
Implementation Method 4
A dermal heatsink with a thermally conductive substrate... providing efficient heat transfer
Data Source
AI summary
One variation of a method for fabricating a dermal heatsink includes: fabricating a substrate defining an interior surface, an exterior surface opposite the interior surface, and an open network of pores extending between the interior surface and the exterior surface; activating surfaces of the substrate and walls of the open network of pores; applying a coating over the substrate to form a heatsink, the coating comprising a porous, hydrophilic material and defining a void network; removing an excess of the coating from the substrate to clear blockages within the open network of pores by the coating; hydrating the heatsink during a curing period; heating the heatsink during the curing period to increase porosity of the coating applied over surfaces of the substrate; and rinsing the heatsink with an acid to decarbonate the coating along walls of the open network of pores in the substrate.