Partially Fluorinated Ether Coolant for Direct Immersion Cooling
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Solution Overview
Problem
Conventional air cooling systems in data centers and electric vehicles face inefficiencies due to poor heat transfer rates and incompatibility with electrical components, leading to high power consumption and thermal management challenges, particularly in high-power density applications like data centers and electric vehicles.
Innovation Solution
A coolant comprising a partially fluorinated ether, which is non-flammable and has a high specific heat capacity, is used for direct immersion cooling, reducing mass flow rates and viscosity, thereby enhancing heat transfer efficiency and safety by minimizing the risk of electrical arcing and water contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional air cooling systems are used, then cooling coverage is provided, but heat transfer rates are poor and power consumption is high
Solution Approach 1:
The patent transitions from air cooling (gas phase) to liquid immersion cooling (liquid phase), submerging electrical components directly in a dielectric fluid. This hydraulic approach enables superior heat transfer rates through direct thermal contact between components and coolant, eliminating the inefficiencies of air-based convection and conduction systems.
Solution Approach 2:
The invention changes the physical state and properties of the cooling medium from gas (air) to liquid (dielectric fluid), fundamentally altering heat transfer parameters. The liquid coolant provides higher specific heat capacity, thermal conductivity, and density, enabling more efficient heat removal from high-power-density components.
2Reliability
If aqueous cooling systems are used, then high heat capacity is provided, but compatibility with electrical components is lost due to high dielectric constant
Solution Approach 1:
The patent employs a dielectric liquid coolant that creates an electrically inert environment around electrical components. The fluid's low dielectric constant and high electrical resistivity prevent electrical breakdown and arcing, allowing direct immersion cooling of live electrical components without short circuits or damage, while still providing superior heat capacity compared to air.
3Reliability
If direct immersion cooling is implemented, then heat transfer efficiency is improved, but risk of electrical arcing and water contamination increases
Solution Approach 1:
The invention uses a composite dielectric fluid formulation combining multiple components (fluorinated compounds, hydrocarbons, esters) to achieve optimal properties: high electrical resistivity prevents arcing, appropriate dielectric strength provides electrical insulation, and chemical stability prevents contamination of sensitive components while maintaining effective heat transfer.
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 coolant effectively reduces energy consumption in data centers, increases power density, and improves thermal management in electric vehicles by providing efficient heat transfer and preventing electrical arcing, while being non-toxic and environmentally friendly.
Implementation Method 1
a coolant for cooling an electrical/electronic element by direct immersion cooling
Implementation Method 2
enhancing heat transfer efficiency
Implementation Method 3
The composition may comprise a desiccant
Data Source
AI summary
A coolant for cooling an electrical/electronic element by direct immersion cooling, comprising a partially fluorinated ether with the structure (of compound 1) wherein R1, R2, R3, R4 are independently selected from the group CF3, alkyl, fluoroalkyl, perfluoroalkyl, haloalkyl perfluorohaloalkyl.