Immersion Cooling Refrigerant Purification by Temperature-Triggered Pumping
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Solution Overview
Problem
Existing liquid immersion cooling systems face inefficiencies in removing impurities from refrigerants, leading to increased costs and potential deterioration of components due to continuous pumping and impurity precipitation.
Innovation Solution
A liquid immersion cooling system with a control device that detects temperature drops to activate a pump, circulating refrigerant through an adsorption unit to remove impurities, reducing the need for constant operation and minimizing impurity precipitation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If impurities are continuously removed during operation, then refrigerant purity is improved, but component deterioration is promoted and power costs increase
Solution Approach 1:
The adsorption unit is activated before impurities reach problematic concentrations. The control device detects temperature changes indicating impurity accumulation and activates the pump and adsorption unit in advance to remove impurities before they cause component deterioration or precipitation, thus maintaining refrigerant purity without continuous operation that would accelerate component aging
Solution Approach 2:
The control device uses temperature detection to monitor refrigerant conditions and provides feedback control. When the temperature change indicates impurity accumulation, the system automatically activates the pump and adsorption unit, and deactivates them when purification is complete, achieving optimal refrigerant purity while minimizing unnecessary operation that would increase power costs and component wear
2Manufacturing precision
If impurities are continuously removed, then refrigerant purity is improved, but power consumption increases
Solution Approach 1:
Instead of continuous pump operation, the system uses periodic activation based on detected temperature changes. The pump and adsorption unit are activated only when the control device detects temperature indicating impurity accumulation, and deactivated when purification is complete. This periodic operation maintains refrigerant purity while significantly reducing power consumption compared to continuous operation
Solution Approach 2:
The system uses the natural temperature changes occurring during normal cooling operation as a signal for purification needs. The heat generating body's operation naturally causes temperature variations that the control device detects to trigger impurity removal only when necessary, making the system self-regulating and eliminating the need for continuous powered operation while maintaining refrigerant purity
3Productivity
If pump operates continuously, then impurity removal efficiency is improved, but operational costs increase
Solution Approach 1:
The pump operates periodically rather than continuously, activated only when the control device detects temperature changes indicating impurity accumulation. This periodic operation maintains high impurity removal efficiency by ensuring purification occurs when needed, while dramatically reducing operational costs by eliminating unnecessary pump operation during clean refrigerant conditions
Solution Approach 2:
The control device implements feedback control by continuously monitoring temperature and activating the pump only when detection indicates impurity accumulation. This ensures impurity removal efficiency is maintained by responding to actual purification needs, while reducing operational costs by avoiding continuous pump operation. The system automatically adjusts pump operation based on real-time refrigerant conditions
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
Efficient impurity removal in refrigerants is achieved, reducing component deterioration and operational costs while simplifying control mechanisms.
Implementation Method 1
an adsorption unit that is provided in the circulation flow channel and adsorbs impurities from the refrigerant circulating in the circulation flow channel
Data Source
AI summary
A liquid immersion cooling system, that cools a heat generating body provided on a substrate, includes: a cooling device main body having a casing that houses the substrate and the heat generating body inside and stores a refrigerant for cooling the heat generating body; a circulation flow channel having both ends connected to each other in a communication state in the casing; an adsorption unit that is provided in the circulation flow channel and adsorbs impurities from the refrigerant circulating in the circulation flow channel; a pump that circulates the refrigerant in the circulation flow channel; and a control device that controls the pump. The control device includes a temperature drop detection unit that detects a decrease in temperature of the refrigerant in the casing, and a pump drive unit that drives the pump based on a detection of the temperature drop detection unit.