Two-Phase Cooling Loop Installation with Inert Gas Displacement
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Solution Overview
Problem
The deployment of two-phase (gas-liquid) phase change heat transfer fluids in computer chip cooling is hindered by environmental impact, cost, flammability, and leakage issues, posing risks to human health and the environment, and existing alternatives are either harmful or highly flammable.
Innovation Solution
Implementing a system that uses an at least partially insoluble fluid to displace and separate two-phase fluids in heat transfer loops, minimizing leakage and vapor release by transitioning between two-phase and inert gas phases, allowing safe installation, maintenance, and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If fluorocarbon two-phase heat transfer fluids are used for cooling high-power density electronics, then heat transfer density and thermal conductivity are improved, but environmental harm and flammability risks worsen
Solution Approach 1:
The patent uses an inert gas (nitrogen or carbon dioxide) to displace the fluorocarbon two-phase heat transfer fluid from the heat transfer loop during installation, maintenance, and operation. This creates an inert environment that eliminates flammability risks and prevents harmful vapor release, while still allowing the system to achieve high heat transfer density when the two-phase fluid is present during active cooling cycles
2Quantity of substance
If fluorocarbon two-phase heat transfer fluids are used in heat transfer loops, then heat transfer capacity increases, but leakage and vapor release worsen
Solution Approach 1:
The system maintains the heat transfer loop filled with inert gas during installation, maintenance, and operation phases. This prevents fluorocarbon vapor release and leakage into the environment. The two-phase heat transfer fluid is only introduced when needed for active cooling, and the inert gas acts as a barrier that prevents harmful vapors from escaping during system modifications or repairs
3Object-affected harmful factors
If alternative two-phase heat transfer fluids like hydrocarbons are used, then flammability risks are reduced, but toxicity and flammability in presence of oxygen worsen
Solution Approach 1:
The patent employs an inert gas (nitrogen or carbon dioxide) to create an oxygen-free environment within the heat transfer loop. This eliminates the flammability and toxicity risks associated with alternative two-phase fluids like hydrocarbons, ammonia, or sulfur dioxide, since these substances cannot combust or release toxic fumes in the absence of oxygen. The inert atmosphere serves as a safety barrier that allows the system to use high-performance two-phase fluids without exposing personnel to hazards during installation, maintenance, or operation
4Productivity
If two-phase heat transfer fluids are used for high-power density cooling, then cooling efficiency improves, but installation and maintenance complexity worsen
Solution Approach 1:
The system uses inert gas as a placeholder that simplifies installation and maintenance procedures. During installation, the inert gas is introduced into the heat transfer loop before the two-phase fluid, providing a safe working environment for technicians. During maintenance, the inert gas can be reintroduced to prevent vapor release. This inert gas barrier reduces the complexity of handling high-performance two-phase fluids while maintaining their superior cooling 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
This approach significantly reduces the risk of fire, vapor formation, and fluid loss, enabling safe and efficient operation of two-phase cooling systems, even in environments inhospitable to humans, by using inert gases and insoluble fluids to manage fluid transitions.
Implementation Method 1
uses an at least partially insoluble fluid to displace and separate two-phase fluids in heat transfer loops
Implementation Method 2
Two-phase (gas-liquid) phase transition heat transfer fluids may provide greater heat transfer density, heat transfer capacity, and thermal conductivity
Implementation Method 3
higher thermal conductivity may enable computer chips to operate at higher power densities, or higher performance, or any combination thereof while enabling the chips to be cooled to design temperatures or case temperatures
Data Source
AI summary
The present application pertains to, for example, processes for installing a two phase fluid into a heat transfer loop. The processes may comprise adding an at least partially insoluble fluid into the heat transfer loop to displace at least a portion of a gas from the heat transfer loop. A two phase fluid is then added into the heat transfer loop to displace at least a portion of the partially insoluble fluid from the heat transfer loop. At least a portion of the displaced at least partially insoluble fluid is separated from the two phase fluid. The at least partially insoluble fluid is at least partially insoluble in the two phase fluid.