Thermosiphon Evaporator Fluid Pathways for Data Center Cooling
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Solution Overview
Problem
Inadequate cooling of electronic devices in data centers leads to overheating, which can result in device failure, increased costs, and reduced efficiency due to insufficient heat removal from high-power equipment.
Innovation Solution
A thermosiphon system comprising a condenser and a flow boiling evaporator, fluidly coupled with a conduit, where the evaporator includes fluid pathways for heat transfer from heat-generating devices, and a transport member that circulates a working fluid between the condenser and evaporator without mechanical pumping, optimizing heat transfer and fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If forced convection cooling is used with fans, then cooling airflow can be provided over electronic devices, but devices in difficult-to-cool areas may still overheat due to insufficient airflow reach
Solution Approach 1:
The patent introduces a thermosiphon system as an intermediary cooling mechanism that uses phase change of working fluid (evaporation and condensation) to transfer heat from electronic devices. The evaporator contacts devices directly to absorb heat, the fluid transports it through phase change, and the condenser releases it, effectively cooling devices in hard-to-reach areas where fan-driven forced convection is insufficient.
Solution Approach 2:
The patent utilizes phase transitions of a working fluid within the thermosiphon system. The fluid evaporates at the evaporator (absorbing heat from electronic devices) and condenses at the condenser (releasing heat), leveraging the latent heat of vaporization and condensation to achieve efficient heat removal from devices that are difficult to cool with conventional airflow methods.
2Temperature
If multiple cooling fans are deployed throughout the data center, then cooling coverage can be improved, but system complexity and energy consumption increase
Solution Approach 1:
The patent merges multiple cooling functions into a single integrated thermosiphon system. Instead of deploying multiple independent fans throughout the data center, the thermosiphon combines heat absorption from multiple electronic devices at the evaporator, fluid transport, and heat rejection at the condenser into one unified system, reducing overall cooling system complexity while maintaining effective cooling coverage.
Solution Approach 2:
The thermosiphon system operates autonomously without requiring external mechanical pumps or complex control systems. The phase change of the working fluid (evaporation and condensation) naturally drives the circulation, and gravity assists in returning the condensed liquid to the evaporator, enabling the system to self-regulate and eliminate the need for additional mechanical cooling components.
3Ease of manufacture
If conventional cooling methods are used, then simple implementation is possible, but heat removal efficiency is insufficient for high-power equipment
Solution Approach 1:
The patent employs phase transitions (evaporation and condensation) of a working fluid to dramatically enhance heat removal efficiency. The latent heat absorbed during evaporation at the evaporator and released during condensation at the condenser enables the system to remove large amounts of heat from high-power electronic equipment, far exceeding the capability of conventional convection-based cooling methods while maintaining structural simplicity.
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 thermosiphon system enhances thermal performance by efficiently removing heat from electronic devices, matching thermal loads accurately, and maintaining fluid circulation balance, thereby preventing overheating and improving data center efficiency.
Implementation Method 1
A liquid form of the fluid is vaporized in an evaporator, and heat is carried by the vapor form of the fluid from the evaporator to a condenser
Implementation Method 2
Thermosiphons are heat exchangers that operate using a fluid that undergoes a phase change
Implementation Method 3
heat is carried by the vapor form of the fluid from the evaporator to a condenser
Implementation Method 4
In the condenser, the vapor condenses, and the liquid form of the fluid is then returned via gravity to the evaporator
Implementation Method 5
the liquid form of the fluid is then returned via gravity to the evaporator
Data Source
AI summary
A thermosiphon includes a condenser; an evaporator that includes a fluid channel and a heat transfer surface, the heat transfer surface defining a plurality of fluid pathways in the fluid channel that extend through the fluid channel, the evaporator configured to thermally couple to one or more heat-generating electronic devices; and a transport member that fluidly couples the condenser and the evaporator, the transport member including a liquid conduit that extends through the transport member to deliver a liquid phase of a working fluid into the fluid pathways, the transport member further including a surface to vertically enclose the plurality of fluid pathways.