Immersion Cooling System with Segmented Liquid Layers
Solution Overview
Problem
Conventional immersion cooling systems using two-phase working liquids are costly due to the high expense of the liquid and result in economic burdens, while also requiring a significant volume for effective heat exchange.
Innovation Solution
The system employs a sealed tank with two distinct working liquids, where a more expensive liquid with better heat exchange performance is used only in a circulating pipeline, reducing its overall usage and combining it with a cheaper liquid that separates by density, along with additional cooling components like fins and fans to enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cooling tank is filled with two-phase working liquid only, then heat exchange performance is improved, but cost increases significantly
Solution Approach 1:
The cooling system is divided into two distinct layers: an upper working layer filled with two-phase working liquid for high-performance heat exchange, and a lower circulating layer filled with single-phase working liquid for cost-effective circulation and heat absorption. This segmentation allows each liquid type to perform its optimal function while reducing overall costs.
Solution Approach 2:
Different regions of the cooling tank are assigned different liquid types based on their specific functions. The upper working layer (where electronic devices are immersed) uses expensive two-phase working liquid for superior heat exchange, while the lower circulating layer uses cheaper single-phase working liquid for bulk heat absorption and circulation, optimizing both performance and cost.
2Productivity
If the cooling tank is filled with two-phase working liquid only, then cooling efficiency is improved, but volume requirement increases
Solution Approach 1:
The cooling tank is divided into two functional layers with distinct volume allocations. The upper working layer contains sufficient two-phase working liquid to ensure effective heat exchange with electronic devices, while the lower circulating layer contains single-phase working liquid for heat absorption and circulation, optimizing the volume distribution for both cooling efficiency and cost-effectiveness.
Solution Approach 2:
Different volumes of working liquid are allocated to different regions based on their cooling requirements. The upper working layer receives a smaller volume of high-performance two-phase working liquid where it is most needed for direct device cooling, while the lower circulating layer receives a larger volume of single-phase working liquid for heat transport and dissipation.
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 cost and volume of the expensive working liquid while maintaining high cooling efficiency by utilizing the expensive liquid only in the circulating pipeline for heat exchange, allowing for cost savings and improved performance.
Implementation Method 1
a heat absorbing section and a condensation section, which are located between the first port and the second port. The first working liquid flows into the circulating pipeline from the first port and circulates in the circulating pipeline
Implementation Method 2
A boiling point of the second working liquid is higher than a boiling point of the first working liquid
Implementation Method 3
The circulating layer and the working layer are contiguous to each other
Implementation Method 4
The first working liquid flows into the circulating pipeline from the first port and circulates in the circulating pipeline
Implementation Method 5
a condensation section, which are located between the first port and the second port
Data Source
AI summary
An immersion cooling system includes a sealed tank having a chamber. A circulating layer and a working layer are respectively formed by first and second working liquids filled in the chamber and are contiguous to each other. The boiling point of the second working liquid is higher than that of the first working liquid. The density of the second working liquid is lower than that of the first working liquid. The first and second working liquids do not dissolve in each other. A circulating cooling module includes a circulating pipeline having first and second ports located in the chamber. The circulating pipeline also has a heat absorbing section and a condensation section located between the first and second ports. The heat absorbing section is located in the working layer. The first working liquid flows into the circulating pipeline from the first port and circulates in the circulating pipeline.