Data Center Cooling via Hydronic Convection and Geothermal Heat Pipes
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Solution Overview
Problem
Traditional data center cooling methods, such as forced-air mechanisms, consume significant electrical power and introduce airborne impurities, leading to high energy costs and potential damage to computing hardware.
Innovation Solution
Implementing hydronic convection and geothermal cooling mechanisms that utilize thermally conductive interfaces to circulate liquids or heat pipes, allowing for heat transfer without electrical power consumption, either through ambient air radiation or earth absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If forced-air cooling mechanisms are used to cool data centers, then heat removal effectiveness is improved, but electrical power consumption increases significantly
Solution Approach 1:
The patent replaces mechanical cooling systems (fans, pumps, compressors) with a passive thermodynamic system utilizing phase change and natural convection. The working fluid circulates through evaporators and condensers driven by temperature-induced pressure differences rather than mechanical pumps, eliminating the need for electrical power to drive fluid circulation.
Solution Approach 2:
The patent employs phase change of the working fluid (liquid to vapor in evaporators, vapor to liquid in condensers) as the primary mechanism for heat transfer. This phase transition enables efficient heat absorption at constant temperature in evaporators and heat rejection in condensers, providing effective cooling without mechanical work input.
2Use of energy by stationary object
If ambient air is used for cooling data centers, then cooling cost is reduced, but airborne particulates and impurities are introduced that can damage computing hardware
Solution Approach 1:
The patent creates a controlled cooling environment using a closed-loop system with a working fluid that does not introduce contaminants. The fluid circulates through sealed evaporators and condensers, providing cooling without exposing computing hardware to ambient airborne particulates and impurities that would be present in direct ambient air cooling systems.
3Temperature
If large air conditioning units are installed in data centers, then cooling capacity is improved, but energy costs during peak times increase due to high electrical power consumption
Solution Approach 1:
The patent implements a self-regulating cooling system where the working fluid automatically circulates through the system based on temperature-driven pressure differentials. The system requires no external power input for pump operation, as the phase change and natural convection processes self-drive the fluid circulation, providing cooling capacity without incurring electrical energy costs.
4Temperature
If traditional forced-air cooling is used, then heat removal is achieved, but device complexity increases due to multiple power-consuming components
Solution Approach 1:
The patent extracts and eliminates the mechanical power-consuming components (pumps, fans, compressors) from the cooling system. The design relies solely on thermodynamic principles—phase change and natural convection—to drive fluid circulation and achieve heat removal, significantly simplifying the system architecture by removing complex mechanical subsystems.
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
These methods effectively remove heat from computing devices without electrical power usage, reducing energy costs and protecting hardware from impurities, while geothermal cooling helps manage heat soak by varying conduit usage.
Implementation Method 1
the working fluid changes from the liquid phase to a gas or vapor phase
Implementation Method 2
In the evaporator, heat discharged from the heat discharge member of the servers is absorbed by the working fluid. The heat absorbed changes the working fluid from the liquid phase to a gas or vapor phase.
Implementation Method 3
In the condenser, from the working fluid in the vapor phase is released into a suitable cooling medium (e.g., air or water). The amount of heat released causes the working fluid to re-condense into the liquid phase.
Implementation Method 4
The cooling apparatus can be external to the data center, and can be cooled through heat radiation into the ambient air
Implementation Method 5
a liquid that can be actively pumped through conduits extending into the earth, thereby transferring heat from the computing devices of the data center to the earth
Data Source
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AI summary
A data center is cooled through hydronic convection mechanisms, geothermal mechanisms or combinations thereof. The individual computing devices of such a data center are cooled through a thermally conductive interface with a liquid. The liquid's container can extend to a cooling apparatus located physically above such computing devices to provide hydronic convection cooling, or it can extend into the earth, either in the form of a heat pipe, or in the form of conduits through which the liquid is actively pumped. The hydronic convection cooling and geothermal heat pipe cooling operate via temperature differentials and consume no external electrical power. Geothermal cooling avoids heat soak by utilizing multiple different sets of conduits extending into the earth, where at least some of those sets of conduits are not utilized for a period of time. Combinations of hydronic convection mechanisms and geothermal cooling can also be utilized.