Immersion Cooling Baffle Assembly for Bubble-Guided Heat Transfer
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Solution Overview
Problem
In immersion cooling systems, the rapid generation of bubbles at the interface between electronic devices and heat transfer fluid leads to dispersion and accumulation of bubbles, affecting cooling performance and potentially causing pollutants to accumulate on the boiler plate, which can impair the system's efficiency.
Innovation Solution
The immersion cooling system incorporates a baffle assembly with side plates and guiding plates that divide the receiving portion into inner upper and lower portions, guiding bubbles away from the boiler plate and preventing their accumulation, while also removing pollutants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the electronic device is submerged in heat transfer fluid for immersion cooling, then the heat transfer efficiency is improved, but bubbles accumulate at the interface causing harmful effects
Solution Approach 1:
The receiving portion is segmented into inner upper and lower portions by a baffle assembly, allowing bubbles to be directed to the upper portion while maintaining heat transfer in the lower portion. This spatial segmentation resolves the contradiction by separating the heat transfer function from the bubble accumulation problem.
Solution Approach 2:
The baffle assembly acts as an intermediary structure between the heat transfer interface and the gas-liquid interface. It mediates bubble movement by guiding bubbles along the baffle surface to the gas phase, preventing bubble accumulation at the heat transfer interface while maintaining efficient cooling.
2Productivity
If bubbles are generated rapidly at the interface, then heat transfer occurs efficiently, but pollutant accumulation impairs cooling performance
Solution Approach 1:
The baffle assembly extracts and removes pollutants from the heat transfer fluid by providing a surface where pollutants can be deposited and separated from the bulk fluid. This extraction function maintains high heat transfer rates while eliminating the harmful effects of pollutant accumulation.
Solution Approach 2:
The baffle structure converts the harmful effect of bubble accumulation into a beneficial pollutant removal mechanism. By directing bubbles along the baffle surface, the system simultaneously achieves rapid heat transfer and pollutant extraction, turning a problematic byproduct into a useful cleaning function.
3Speed
If the receiving portion is divided into multiple portions by baffle assembly, then bubble flow velocity is enhanced, but device complexity increases
Solution Approach 1:
The baffle assembly introduces structural complexity only in the regions where it is needed to guide bubble flow, rather than complicating the entire system. The simple vertical baffle structure provides localized flow direction enhancement without requiring complex mechanisms throughout the system.
Solution Approach 2:
The baffle assembly uses the natural buoyancy and flow of bubbles to achieve the desired effect without requiring external power or complex control mechanisms. The structure passively directs bubbles along its surface, allowing the system to enhance bubble flow velocity through simple geometric configuration rather than active control.
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 configuration enhances the flow velocity of bubbles, preventing them from attaching to the boiler plate and maintaining cooling performance, thereby improving the overall efficiency and allowing for denser configuration of electronic devices within the limited cooling space.
Implementation Method 1
the heat transfer fluid with a lower boiling point will be first boiled and vaporized, and thus bubbles in a large amount will be quickly generated at interfaces (as well as the proximity of the interfaces) between the electronic device and the heat transfer fluid
Implementation Method 2
These bubbles will be widely dispersed in the heat transfer fluid
Data Source
AI summary
An immersion cooling system including a cooling tank, an immersion unit, and a baffle assembly is provided. The cooling tank has a receiving portion. The immersion unit is in the receiving portion and includes a boiler plate. The baffle assembly divides the receiving portion into an inner upper portion, an inner lower portion, and a peripheral portion. The boiler plate is in the inner lower portion, and a width of the inner upper portion is less than or equal to a width of the boiler plate.