Server Cabinet Cooling via Segmented Fluid and Heat Exchange

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Solution Overview

Problem

Current server cabinets face inefficiencies in heat dissipation, leading to overheating issues, high energy consumption, and increased operational costs due to the heavy loading and energy requirements of heat exchangers, especially in high-density cloud data centers.

Innovation Solution

A server cabinet design that combines a heat exchange device with a cooling fluid pipe set, allowing for the flow of cooling fluids into and out of a heat exchange chamber to directly absorb and dissipate heat, reducing the loading on heat exchangers and enhancing energy efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If heat exchangers are used to remove heat from the whole cabinet, then heat dissipation effectiveness is improved, but the loading and energy consumption of the heat exchangers increase significantly

Engineering Contradiction:
Improveheat dissipation effectivenessVSAvoidenergy consumption of heat exchangers
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The invention divides the heat dissipation system into two independent parts: (1) heat exchangers that handle only the cabinet ambient temperature, and (2) cooling fluid pipe sets that directly cool the heating sources inside servers. This segmentation allows each component to handle only its necessary load, reducing the overall energy consumption while maintaining effective heat dissipation.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If fan only is used to remove heat, then device complexity is reduced, but heat dissipation effectiveness deteriorates and indoor temperature must be kept low

Engineering Contradiction:
Improveheat dissipation system complexityVSAvoidheat dissipation effectiveness
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The invention introduces cooling fluid pipe sets that circulate cooling fluid directly to heating sources within servers. This hydraulic cooling approach is more efficient than air-based fan cooling, enabling better heat dissipation effectiveness while allowing the cabinet to operate in higher ambient temperatures without requiring intensive air conditioning.

Inventive Principle:
Principle #29Pneumatics and hydraulics

3Area of stationary object

If heat exchangers remove heat from the whole cabinet, then heat dissipation coverage is improved, but the loading of heat exchangers becomes heavy

Engineering Contradiction:
Improveheat dissipation coverageVSAvoidloading of heat exchangers
Core Design Contradiction:
Area of stationary objectVSPower

Solution Approach 1:

The invention segments the heat dissipation function between heat exchangers (handling cabinet-level ambient cooling) and cooling fluid pipe sets (handling server-level direct cooling). This division allows heat exchangers to operate at reduced loading while maintaining comprehensive heat dissipation coverage through the complementary direct-fluid cooling paths.

Inventive Principle:
Principle #1Segmentation

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 combined system effectively reduces the energy consumption and enhances heat dissipation efficiency by utilizing both the heat exchange device and cooling fluid pipe set to manage heat generated by servers, maintaining a stable operating environment while minimizing energy waste.

Implementation Method 1

the cooling fluid to flow into or out of a heat exchange chamber of a server to cool down a heating source directly

Methodology Applied
Scientific EffectHeat conduction: Conduction (thermal)

Implementation Method 2

When two phase fluid flowing through the heat exchanger, it absorbs a huge amount of heat from the heat dissipating fins to vapors

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 3

the heat exchanger could absorb heat generated by servers and cool down the temperature inside the server cabinet by the heat dissipating fins and the phase transformation of the two phase fluid

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 4

the heat exchanger could absorb heat generated by servers and cool down the temperature inside the server cabinet by the heat dissipating fins

Methodology Applied
Scientific EffectThermal radiation: Thermal Radiation

Implementation Method 5

the heat exchanger could absorb heat generated by servers and cool down the temperature inside the server cabinet by the heat dissipating fins and the phase transformation of the two phase fluid

Methodology Applied
Scientific EffectPhase change: Phase Change

Implementation Method 6

When two phase fluid flowing through the heat exchanger, it absorbs a huge amount of heat from the heat dissipating fins to vapors

Methodology Applied
Scientific EffectLatent heat: Latent Heat

Data Source

PatentUS8437129B2Server cabinet
Publication Date: 2013.05.07 INVENTEC CORP
  • US8437129B2 patent drawing
  • US8437129B2 patent drawing
  • US8437129B2 patent drawing

AI summary

A server cabinet is provided, which not only utilizes a first cooling fluid to flow through a heat exchanger of the cabinet to lower the temperature of entrances of fan modules without wasting additional energy, but also utilizes a cooling fluid pipe set to send a second cooling fluid to heat exchange apparatuses in a server to lower the temperature of heating elements inside the cabinet. The server cabinet could lower the heat dissipating loading of the heat exchanger of the cabinet and achieve the efficiency of saving energy.