Multi-Circuit Computer Cooling for Lower Server Farm Energy Use
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Solution Overview
Problem
Computer systems, particularly server farms, face significant energy consumption due to heating and cooling demands, with conventional air-based cooling methods being energy-intensive and inefficient, and liquid cooling techniques facing technical challenges such as tightness issues and high energy requirements.
Innovation Solution
A multi-circuit cooling system that includes a liquid-based cooling circuit for high-temperature components and an air-based cooling circuit connected to a refrigeration machine, allowing for efficient heat dissipation and reduced energy usage by utilizing a refrigeration machine only when necessary, with optional external heat exchangers and directional control valves for variable heat distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air conditioning systems are used to cool server farms, then cooling capacity is provided, but energy consumption increases significantly
Solution Approach 1:
The cooling system is divided into multiple independent cooling circuits, each equipped with its own heat exchanger and control mechanisms. This segmentation allows different zones or components to be cooled independently based on their specific thermal requirements, avoiding the energy waste of cooling entire spaces uniformly.
Solution Approach 2:
Different cooling strategies are applied to different components based on their local heat generation characteristics. High-heat components receive targeted cooling from dedicated circuits, while lower-heat areas use passive or minimal cooling, optimizing energy distribution according to actual thermal needs.
2Loss of energy
If liquid cooling is used for processors, then heat dissipation efficiency improves, but technical complexity and tightness protection requirements increase
Solution Approach 1:
Heat pipes are used as intermediary thermal management devices between processors and cooling systems. These heat pipes encapsulate the liquid cooling mechanism within a sealed unit, providing efficient heat transfer while eliminating the need for external liquid containment and associated tightness protection systems.
Solution Approach 2:
The cooling system incorporates passive heat dissipation mechanisms that automatically respond to thermal conditions without requiring complex active control systems. The design uses natural convection and phase change principles that self-regulate, reducing the need for sophisticated monitoring and protection mechanisms.
3Loss of energy
If waste heat is used to heat buildings, then energy utilization improves, but applicability is limited by lack of heatable surfaces and climate conditions
Solution Approach 1:
The cooling system's heat exchangers are designed to perform multiple functions: primary cooling during high-heat periods and secondary heating support during cooler periods. This multi-functionality allows the same thermal management infrastructure to provide both cooling and heating services, expanding applicability beyond traditional single-purpose systems.
Solution Approach 2:
The system incorporates dynamic control mechanisms that adjust heat exchanger operation based on real-time thermal conditions, building requirements, and environmental factors. This dynamic adaptability allows the system to optimize between cooling and heating modes, responding flexibly to changing climate conditions and building needs.
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
Significantly reduces energy consumption by optimizing heat dissipation through multiple cooling circuits, allowing for reliable cooling at high temperatures while minimizing the use of energy-intensive refrigeration machines and enabling the use of waste heat for other applications.
Implementation Method 1
The first cooling circuit is operable via a liquid and/or via thermal conduction
Implementation Method 2
cooling takes place by means of a liquid, such as water
Implementation Method 3
the refrigerant is liquefied, which can then evaporate in the cold part of the refrigeration machine, where it cools down and generates the cooling capacity
Implementation Method 4
at least the second cooling circuit, which is generally an air-based cooling circuit, is connected to a cold part of the refrigerating machine
Data Source
Figure 1
Figure 2~2a
Figure 3
AI summary
The invention relates to a system for cooling a computer system, wherein the computer system is cooled by means of at least two cooling circuits.