Two-phase cooling system and cooling method
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Solution Overview
Problem
Traditional single-phase liquid cooling technologies struggle with high heat flux in modern server applications, while pump-driven two-phase flow cooling systems waste energy when operating at low power.
Innovation Solution
A two-phase cooling system with a circulation device, first and second cooling devices, and a phase change material, allowing for parallel and serial connections to manage cooling capacity dynamically based on load, using a first and second operation mode to store and release cooling capacity as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a pump-driven two-phase flow cooling system is used to dissipate heat from servers with high heat flux, then cooling capacity is improved, but energy consumption increases significantly when the server operates at low power
Solution Approach 1:
The system dynamically switches between single-phase and two-phase cooling modes based on the server's power consumption level. When the server operates at low power, the system uses single-phase liquid cooling through the first cooling device. When the server operates at high power, the system transitions to two-phase cooling through the second cooling device with phase change material, thereby adapting the cooling capacity to the actual heat load and avoiding energy waste.
Solution Approach 2:
The system changes the physical state parameter of the cooling medium by utilizing phase change material in the second cooling device. The phase change material transitions between solid and liquid states to absorb and release heat, enabling efficient heat dissipation during high-power operations while allowing the system to operate in a different mode during low-power conditions to conserve energy.
2Power
If a pump-driven two-phase flow cooling system is used, then cooling performance under high thermal loading is improved, but the system structure becomes more complex
Solution Approach 1:
The cooling system is segmented into two independent cooling devices: a first cooling device for single-phase liquid cooling and a second cooling device for two-phase cooling with phase change material. Each cooling device handles specific operating conditions, allowing the system to achieve high cooling performance when needed while maintaining a modular structure that can be controlled through valve switching to manage complexity.
Solution Approach 2:
The cooling system is designed with multi-functionality to handle both low-power and high-power server operations. The first cooling device provides basic single-phase cooling for low-power conditions, while the second cooling device provides enhanced two-phase cooling for high-power conditions. Both cooling devices share common fluid passages and control mechanisms, enabling the system to perform multiple cooling functions within a unified architecture.
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 system reduces energy consumption and improves efficiency by adaptively managing cooling capacity, ensuring effective performance across varying loads without excessive energy use.
Implementation Method 1
The second cooling device is disposed with a phase change material
Implementation Method 2
the phase change material in the second cooling device 13. The disposition of the phase change material, the first operation mode and the second operation mode effectively manage storage and release of cooling capacity
Implementation Method 3
The first cooling device is disposed on the liquid supply main path. The second cooling device is disposed with a phase change material and disposed on the liquid supply branch path
Implementation Method 4
a circulation device, a first cooling device and a second cooling device... The circulation pump is disposed on the first main path
Data Source
AI summary
A two-phase cooling system includes a circulation device, a first cooling device and a second cooling device. The circulation device includes a liquid supply main path and a liquid supply branch path. The first cooling device is disposed on the liquid supply main path. The second cooling device is disposed with a phase change material and disposed on the liquid supply branch path. The two-phase cooling system is configured with a first operation mode and a second operation mode. The first cooling device is connected with the second cooling device in parallel when the two-phase cooling system is in the first operation mode. The first cooling device is serially connected with the second cooling device when the two-phase cooling system is in the second operation mode.